Backport from git Libtool:

[pf3gnuchains/gcc-fork.git] / libstdc++-v3 / configure

diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 17d5922..31678eb 100755 (executable)
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -458,7 +458,7 @@ ac_includes_default="\
 # include <unistd.h>
 #endif"
 
-ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libtool_VERSION multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar glibcxx_builddir glibcxx_srcdir toplevel_srcdir CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LN_S AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CPP CPPFLAGS EGREP LIBTOOL SED FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM OBJDUMP ac_ct_OBJDUMP lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 LDFLAGS CXXCPP enable_shared enable_static GLIBCXX_HOSTED_TRUE GLIBCXX_HOSTED_FALSE GLIBCXX_BUILD_PCH_TRUE GLIBCXX_BUILD_PCH_FALSE glibcxx_PCHFLAGS glibcxx_thread_h WERROR SECTION_FLAGS CSTDIO_H BASIC_FILE_H BASIC_FILE_CC check_msgfmt glibcxx_MOFILES glibcxx_POFILES glibcxx_localedir USE_NLS CLOCALE_H CMESSAGES_H CCODECVT_CC CCOLLATE_CC CCTYPE_CC CMESSAGES_CC CMONEY_CC CNUMERIC_CC CTIME_H CTIME_CC CLOCALE_CC CLOCALE_INTERNAL_H ALLOCATOR_H ALLOCATOR_NAME C_INCLUDE_DIR GLIBCXX_C_HEADERS_C_TRUE GLIBCXX_C_HEADERS_C_FALSE GLIBCXX_C_HEADERS_C_STD_TRUE GLIBCXX_C_HEADERS_C_STD_FALSE GLIBCXX_C_HEADERS_C_GLOBAL_TRUE GLIBCXX_C_HEADERS_C_GLOBAL_FALSE GLIBCXX_C_HEADERS_COMPATIBILITY_TRUE GLIBCXX_C_HEADERS_COMPATIBILITY_FALSE GLIBCXX_C_HEADERS_EXTRA_TRUE GLIBCXX_C_HEADERS_EXTRA_FALSE DEBUG_FLAGS GLIBCXX_BUILD_DEBUG_TRUE GLIBCXX_BUILD_DEBUG_FALSE ENABLE_PARALLEL_TRUE ENABLE_PARALLEL_FALSE EXTRA_CXX_FLAGS GLIBCXX_LIBS SECTION_LDFLAGS OPT_LDFLAGS LIBMATHOBJS LIBICONV LTLIBICONV SYMVER_FILE port_specific_symbol_files ENABLE_SYMVERS_TRUE ENABLE_SYMVERS_FALSE ENABLE_SYMVERS_GNU_TRUE ENABLE_SYMVERS_GNU_FALSE ENABLE_SYMVERS_GNU_NAMESPACE_TRUE ENABLE_SYMVERS_GNU_NAMESPACE_FALSE ENABLE_SYMVERS_DARWIN_TRUE ENABLE_SYMVERS_DARWIN_FALSE ENABLE_VISIBILITY_TRUE ENABLE_VISIBILITY_FALSE GLIBCXX_LDBL_COMPAT_TRUE GLIBCXX_LDBL_COMPAT_FALSE baseline_dir ATOMICITY_SRCDIR ATOMIC_WORD_SRCDIR ATOMIC_FLAGS CPU_DEFINES_SRCDIR ABI_TWEAKS_SRCDIR OS_INC_SRCDIR ERROR_CONSTANTS_SRCDIR glibcxx_prefixdir gxx_include_dir glibcxx_toolexecdir glibcxx_toolexeclibdir GLIBCXX_INCLUDES TOPLEVEL_INCLUDES OPTIMIZE_CXXFLAGS WARN_FLAGS LIBSUPCXX_PICFLAGS LIBOBJS LTLIBOBJS'
+ac_subst_vars='SHELL PATH_SEPARATOR PACKAGE_NAME PACKAGE_TARNAME PACKAGE_VERSION PACKAGE_STRING PACKAGE_BUGREPORT exec_prefix prefix program_transform_name bindir sbindir libexecdir datadir sysconfdir sharedstatedir localstatedir libdir includedir oldincludedir infodir mandir build_alias host_alias target_alias DEFS ECHO_C ECHO_N ECHO_T LIBS libtool_VERSION multi_basedir build build_cpu build_vendor build_os host host_cpu host_vendor host_os target target_cpu target_vendor target_os INSTALL_PROGRAM INSTALL_SCRIPT INSTALL_DATA CYGPATH_W PACKAGE VERSION ACLOCAL AUTOCONF AUTOMAKE AUTOHEADER MAKEINFO install_sh STRIP ac_ct_STRIP INSTALL_STRIP_PROGRAM mkdir_p AWK SET_MAKE am__leading_dot AMTAR am__tar am__untar glibcxx_builddir glibcxx_srcdir toplevel_srcdir CC ac_ct_CC EXEEXT OBJEXT CXX ac_ct_CXX CFLAGS CXXFLAGS LN_S AS ac_ct_AS AR ac_ct_AR RANLIB ac_ct_RANLIB MAINTAINER_MODE_TRUE MAINTAINER_MODE_FALSE MAINT CPP CPPFLAGS EGREP LIBTOOL SED FGREP GREP LD DUMPBIN ac_ct_DUMPBIN NM OBJDUMP ac_ct_OBJDUMP lt_ECHO DSYMUTIL ac_ct_DSYMUTIL NMEDIT ac_ct_NMEDIT LIPO ac_ct_LIPO OTOOL ac_ct_OTOOL OTOOL64 ac_ct_OTOOL64 LDFLAGS CXXCPP enable_shared enable_static GLIBCXX_HOSTED_TRUE GLIBCXX_HOSTED_FALSE GLIBCXX_BUILD_PCH_TRUE GLIBCXX_BUILD_PCH_FALSE glibcxx_PCHFLAGS glibcxx_thread_h WERROR SECTION_FLAGS CSTDIO_H BASIC_FILE_H BASIC_FILE_CC check_msgfmt glibcxx_MOFILES glibcxx_POFILES glibcxx_localedir USE_NLS CLOCALE_H CMESSAGES_H CCODECVT_CC CCOLLATE_CC CCTYPE_CC CMESSAGES_CC CMONEY_CC CNUMERIC_CC CTIME_H CTIME_CC CLOCALE_CC CLOCALE_INTERNAL_H ALLOCATOR_H ALLOCATOR_NAME C_INCLUDE_DIR GLIBCXX_C_HEADERS_C_TRUE GLIBCXX_C_HEADERS_C_FALSE GLIBCXX_C_HEADERS_C_STD_TRUE GLIBCXX_C_HEADERS_C_STD_FALSE GLIBCXX_C_HEADERS_C_GLOBAL_TRUE GLIBCXX_C_HEADERS_C_GLOBAL_FALSE GLIBCXX_C_HEADERS_COMPATIBILITY_TRUE GLIBCXX_C_HEADERS_COMPATIBILITY_FALSE GLIBCXX_C_HEADERS_EXTRA_TRUE GLIBCXX_C_HEADERS_EXTRA_FALSE DEBUG_FLAGS GLIBCXX_BUILD_DEBUG_TRUE GLIBCXX_BUILD_DEBUG_FALSE ENABLE_PARALLEL_TRUE ENABLE_PARALLEL_FALSE EXTRA_CXX_FLAGS GLIBCXX_LIBS SECTION_LDFLAGS OPT_LDFLAGS LIBICONV LTLIBICONV SYMVER_FILE port_specific_symbol_files ENABLE_SYMVERS_TRUE ENABLE_SYMVERS_FALSE ENABLE_SYMVERS_GNU_TRUE ENABLE_SYMVERS_GNU_FALSE ENABLE_SYMVERS_GNU_NAMESPACE_TRUE ENABLE_SYMVERS_GNU_NAMESPACE_FALSE ENABLE_SYMVERS_DARWIN_TRUE ENABLE_SYMVERS_DARWIN_FALSE ENABLE_VISIBILITY_TRUE ENABLE_VISIBILITY_FALSE GLIBCXX_LDBL_COMPAT_TRUE GLIBCXX_LDBL_COMPAT_FALSE baseline_dir ATOMICITY_SRCDIR ATOMIC_WORD_SRCDIR ATOMIC_FLAGS CPU_DEFINES_SRCDIR ABI_TWEAKS_SRCDIR OS_INC_SRCDIR ERROR_CONSTANTS_SRCDIR glibcxx_prefixdir gxx_include_dir glibcxx_toolexecdir glibcxx_toolexeclibdir GLIBCXX_INCLUDES TOPLEVEL_INCLUDES OPTIMIZE_CXXFLAGS WARN_FLAGS LIBSUPCXX_PICFLAGS LIBOBJS LTLIBOBJS'
 ac_subst_files=''
 ac_pwd=`pwd`
 
@@ -1052,7 +1052,7 @@ Optional Features:
   --enable-fully-dynamic-string
                           do not put empty strings in per-process static
                           memory [default=no]
-  --enable-clock-gettime=KIND
+  --enable-libstdcxx-time=KIND
                           use KIND for check type [default=no]
   --enable-tls            Use thread-local storage [default=yes]
   --disable-rpath         do not hardcode runtime library paths
@@ -2453,7 +2453,7 @@ echo "${ECHO_T}$ac_cv_prog_egrep" >&6
   # expandable list at autoconf time; the second provides an expandable list
   # (i.e., shell variable) at configure time.
 
-  SUBDIRS='include libmath libsupc++ src doc po testsuite'
+  SUBDIRS='include libsupc++ src doc po testsuite'
 
   # These need to be absolute paths, yet at the same time need to
   # canonicalize only relative paths, because then amd will not unmount
@@ -4130,7 +4130,6 @@ fi
   # which are themselves conditionally expanded.
   ## (Right now, this only matters for enable_wchar_t, but nothing prevents
   ## other macros from doing the same.  This should be automated.)  -pme
-  need_libmath=no
 
   # Check for uClibc since Linux platforms use different configuration
   # directories depending on the C library in use.
@@ -4579,13 +4578,13 @@ if test "${lt_cv_nm_interface+set}" = set; then
 else
   lt_cv_nm_interface="BSD nm"
   echo "int some_variable = 0;" > conftest.$ac_ext
-  (eval echo "\"\$as_me:4582: $ac_compile\"" >&5)
+  (eval echo "\"\$as_me:4581: $ac_compile\"" >&5)
   (eval "$ac_compile" 2>conftest.err)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:4585: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
+  (eval echo "\"\$as_me:4584: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
   (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
   cat conftest.err >&5
-  (eval echo "\"\$as_me:4588: output\"" >&5)
+  (eval echo "\"\$as_me:4587: output\"" >&5)
   cat conftest.out >&5
   if $GREP 'External.*some_variable' conftest.out > /dev/null; then
     lt_cv_nm_interface="MS dumpbin"
@@ -5028,7 +5027,7 @@ irix5* | irix6* | nonstopux*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
   lt_cv_deplibs_check_method=pass_all
   ;;
 
@@ -5731,7 +5730,7 @@ ia64-*-hpux*)
   ;;
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 5734 "configure"' > conftest.$ac_ext
+  echo '#line 5733 "configure"' > conftest.$ac_ext
   if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   (eval $ac_compile) 2>&5
   ac_status=$?
@@ -7877,11 +7876,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:7880: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:7879: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:7884: \$? = $ac_status" >&5
+   echo "$as_me:7883: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -8046,7 +8045,7 @@ echo $ECHO_N "checking for $compiler option to produce PIC... $ECHO_C" >&6
       lt_prog_compiler_static='-non_shared'
       ;;
 
-    linux* | k*bsd*-gnu)
+    linux* | k*bsd*-gnu | kopensolaris*-gnu)
       case $cc_basename in
       # old Intel for x86_64 which still supported -KPIC.
       ecc*)
@@ -8216,11 +8215,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:8219: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:8218: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:8223: \$? = $ac_status" >&5
+   echo "$as_me:8222: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -8321,11 +8320,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:8324: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:8323: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:8328: \$? = $ac_status" >&5
+   echo "$as_me:8327: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -8376,11 +8375,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:8379: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:8378: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:8383: \$? = $ac_status" >&5
+   echo "$as_me:8382: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -8607,7 +8606,7 @@ _LT_EOF
       archive_expsym_cmds='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
       ;;
 
-    gnu* | linux* | tpf* | k*bsd*-gnu)
+    gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
       tmp_diet=no
       if test "$host_os" = linux-dietlibc; then
        case $cc_basename in
@@ -10171,7 +10170,7 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
   version_type=linux
   need_lib_prefix=no
   need_version=no
@@ -11243,7 +11242,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11246 "configure"
+#line 11245 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11339,7 +11338,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11342 "configure"
+#line 11341 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12349,7 +12348,7 @@ if test -z "$aix_libpath"; then aix_libpath="/usr/lib:/lib"; fi
         inherit_rpath_CXX=yes
         ;;
 
-      linux* | k*bsd*-gnu)
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
         case $cc_basename in
           KCC*)
            # Kuck and Associates, Inc. (KAI) C++ Compiler
@@ -13177,7 +13176,7 @@ echo $ECHO_N "checking for $compiler option to produce PIC... $ECHO_C" >&6
            ;;
        esac
        ;;
-      linux* | k*bsd*-gnu)
+      linux* | k*bsd*-gnu | kopensolaris*-gnu)
        case $cc_basename in
          KCC*)
            # KAI C++ Compiler
@@ -13365,11 +13364,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13368: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13367: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>conftest.err)
    ac_status=$?
    cat conftest.err >&5
-   echo "$as_me:13372: \$? = $ac_status" >&5
+   echo "$as_me:13371: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s "$ac_outfile"; then
      # The compiler can only warn and ignore the option if not recognized
      # So say no if there are warnings other than the usual output.
@@ -13464,11 +13463,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13467: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13466: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13471: \$? = $ac_status" >&5
+   echo "$as_me:13470: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -13516,11 +13515,11 @@ else
    -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
    -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
    -e 's:$: $lt_compiler_flag:'`
-   (eval echo "\"\$as_me:13519: $lt_compile\"" >&5)
+   (eval echo "\"\$as_me:13518: $lt_compile\"" >&5)
    (eval "$lt_compile" 2>out/conftest.err)
    ac_status=$?
    cat out/conftest.err >&5
-   echo "$as_me:13523: \$? = $ac_status" >&5
+   echo "$as_me:13522: \$? = $ac_status" >&5
    if (exit $ac_status) && test -s out/conftest2.$ac_objext
    then
      # The compiler can only warn and ignore the option if not recognized
@@ -14097,7 +14096,7 @@ linux*oldld* | linux*aout* | linux*coff*)
   ;;
 
 # This must be Linux ELF.
-linux* | k*bsd*-gnu)
+linux* | k*bsd*-gnu | kopensolaris*-gnu)
   version_type=linux
   need_lib_prefix=no
   need_version=no
@@ -14593,7 +14592,7 @@ fi;
     #
     # Fake what AC_TRY_COMPILE does.  XXX Look at redoing this new-style.
     cat > conftest.$ac_ext << EOF
-#line 14596 "configure"
+#line 14595 "configure"
 struct S { ~S(); };
 void bar();
 void foo()
@@ -14722,6 +14721,32 @@ echo "${ECHO_T}$enable_libstdcxx_pch" >&6
 
 
 
+  echo "$as_me:$LINENO: checking for thread model used by GCC" >&5
+echo $ECHO_N "checking for thread model used by GCC... $ECHO_C" >&6
+  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
+  echo "$as_me:$LINENO: result: $target_thread_file" >&5
+echo "${ECHO_T}$target_thread_file" >&6
+
+  if test $target_thread_file != single; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_GTHR_DEFAULT 1
+_ACEOF
+
+  fi
+
+  glibcxx_thread_h=gthr-$target_thread_file.h
+
+    gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
+  if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
+    enable_thread=yes
+  else
+   enable_thread=no
+  fi
+
+
+
+
 
 
   ac_ext=cc
@@ -14739,7 +14764,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   # unnecessary for a builtins test.
 
     cat > conftest.$ac_ext << EOF
-#line 14742 "configure"
+#line 14767 "configure"
 int main()
 {
   typedef bool atomic_type;
@@ -14778,7 +14803,7 @@ echo "${ECHO_T}$enable_atomic_builtinsb" >&6
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 14781 "configure"
+#line 14806 "configure"
 int main()
 {
   typedef short atomic_type;
@@ -14817,7 +14842,7 @@ echo "${ECHO_T}$enable_atomic_builtinss" >&6
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 14820 "configure"
+#line 14845 "configure"
 int main()
 {
   // NB: _Atomic_word not necessarily int.
@@ -14857,7 +14882,7 @@ echo "${ECHO_T}$enable_atomic_builtinsi" >&6
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 14860 "configure"
+#line 14885 "configure"
 int main()
 {
   typedef long long atomic_type;
@@ -14929,32 +14954,6 @@ echo "$as_me: WARNING: Performance of certain classes will degrade as a result."
 
 
 
-  echo "$as_me:$LINENO: checking for thread model used by GCC" >&5
-echo $ECHO_N "checking for thread model used by GCC... $ECHO_C" >&6
-  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
-  echo "$as_me:$LINENO: result: $target_thread_file" >&5
-echo "${ECHO_T}$target_thread_file" >&6
-
-  if test $target_thread_file != single; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_GTHR_DEFAULT 1
-_ACEOF
-
-  fi
-
-  glibcxx_thread_h=gthr-$target_thread_file.h
-
-    gthread_file=${toplevel_srcdir}/gcc/${glibcxx_thread_h}
-  if grep __GTHREADS $gthread_file >/dev/null 2>&1 ; then
-    enable_thread=yes
-  else
-   enable_thread=no
-  fi
-
-
-
-
 # Checks for compiler support that doesn't require linking.
 
   # All these tests are for C++; save the language and the compiler flags.
@@ -15048,7 +15047,6 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-GLIBCXX_CHECK_STANDARD_LAYOUT
 
 # Enable all the variable C++ runtime options that don't require linking.
 
@@ -21712,25 +21710,25 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
-# For clock_gettime support.
+# For clock_gettime, nanosleep and sched_yield support.
 # NB: The default is [no], because otherwise it requires linking.
 
 
-  echo "$as_me:$LINENO: checking for clock_gettime clocks" >&5
-echo $ECHO_N "checking for clock_gettime clocks... $ECHO_C" >&6
-   # Check whether --enable-clock-gettime or --disable-clock-gettime was given.
-if test "${enable_clock_gettime+set}" = set; then
-  enableval="$enable_clock_gettime"
+  echo "$as_me:$LINENO: checking for clock_gettime, nanosleep and sched_yield" >&5
+echo $ECHO_N "checking for clock_gettime, nanosleep and sched_yield... $ECHO_C" >&6
+   # Check whether --enable-libstdcxx-time or --disable-libstdcxx-time was given.
+if test "${enable_libstdcxx_time+set}" = set; then
+  enableval="$enable_libstdcxx_time"
 
       case "$enableval" in
        yes|no|rt) ;;
-       *) { { echo "$as_me:$LINENO: error: Unknown argument to enable/disable clock-gettime" >&5
-echo "$as_me: error: Unknown argument to enable/disable clock-gettime" >&2;}
+       *) { { echo "$as_me:$LINENO: error: Unknown argument to enable/disable libstdcxx-time" >&5
+echo "$as_me: error: Unknown argument to enable/disable libstdcxx-time" >&2;}
    { (exit 1); exit 1; }; } ;;
                           esac
 
 else
-  enable_clock_gettime=no
+  enable_libstdcxx_time=no
 fi;
 
 
@@ -21749,9 +21747,9 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   ac_has_clock_monotonic=no;
   ac_has_clock_realtime=no;
 
-  if test x"$enable_clock_gettime" != x"no"; then
+  if test x"$enable_libstdcxx_time" != x"no"; then
 
-    if test x"$enable_clock_gettime" = x"rt"; then
+    if test x"$enable_libstdcxx_time" = x"rt"; then
       echo "$as_me:$LINENO: checking for library containing clock_gettime" >&5
 echo $ECHO_N "checking for library containing clock_gettime... $ECHO_C" >&6
 if test "${ac_cv_search_clock_gettime+set}" = set; then
@@ -21888,14 +21886,13 @@ if test "$ac_cv_search_clock_gettime" != no; then
 
 fi
 
-    else
-      echo "$as_me:$LINENO: checking for library containing clock_gettime" >&5
-echo $ECHO_N "checking for library containing clock_gettime... $ECHO_C" >&6
-if test "${ac_cv_search_clock_gettime+set}" = set; then
+      echo "$as_me:$LINENO: checking for library containing nanosleep" >&5
+echo $ECHO_N "checking for library containing nanosleep... $ECHO_C" >&6
+if test "${ac_cv_search_nanosleep+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
   ac_func_search_save_LIBS=$LIBS
-ac_cv_search_clock_gettime=no
+ac_cv_search_nanosleep=no
 if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
@@ -21914,11 +21911,11 @@ extern "C"
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char clock_gettime ();
+char nanosleep ();
 int
 main ()
 {
-clock_gettime ();
+nanosleep ();
   ;
   return 0;
 }
@@ -21945,7 +21942,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_search_clock_gettime="none required"
+  ac_cv_search_nanosleep="none required"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -21953,8 +21950,8 @@ sed 's/^/| /' conftest.$ac_ext >&5
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-if test "$ac_cv_search_clock_gettime" = no; then
-  for ac_lib in posix4; do
+if test "$ac_cv_search_nanosleep" = no; then
+  for ac_lib in rt posix4; do
     LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
     if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
@@ -21974,11 +21971,11 @@ extern "C"
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char clock_gettime ();
+char nanosleep ();
 int
 main ()
 {
-clock_gettime ();
+nanosleep ();
   ;
   return 0;
 }
@@ -22005,7 +22002,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_search_clock_gettime="-l$ac_lib"
+  ac_cv_search_nanosleep="-l$ac_lib"
 break
 else
   echo "$as_me: failed program was:" >&5
@@ -22018,47 +22015,51 @@ rm -f conftest.err conftest.$ac_objext \
 fi
 LIBS=$ac_func_search_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_search_clock_gettime" >&5
-echo "${ECHO_T}$ac_cv_search_clock_gettime" >&6
-if test "$ac_cv_search_clock_gettime" != no; then
-  test "$ac_cv_search_clock_gettime" = "none required" || LIBS="$ac_cv_search_clock_gettime $LIBS"
+echo "$as_me:$LINENO: result: $ac_cv_search_nanosleep" >&5
+echo "${ECHO_T}$ac_cv_search_nanosleep" >&6
+if test "$ac_cv_search_nanosleep" != no; then
+  test "$ac_cv_search_nanosleep" = "none required" || LIBS="$ac_cv_search_nanosleep $LIBS"
 
 fi
 
-    fi
-
-    case "$ac_cv_search_clock_gettime" in
-      -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
-    esac
-
-
-for ac_header in unistd.h
-do
-as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
+    else
+      echo "$as_me:$LINENO: checking for library containing clock_gettime" >&5
+echo $ECHO_N "checking for library containing clock_gettime... $ECHO_C" >&6
+if test "${ac_cv_search_clock_gettime+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
 else
-  # Is the header compilable?
-echo "$as_me:$LINENO: checking $ac_header usability" >&5
-echo $ECHO_N "checking $ac_header usability... $ECHO_C" >&6
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_clock_gettime=no
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-$ac_includes_default
-#include <$ac_header>
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char clock_gettime ();
+int
+main ()
+{
+clock_gettime ();
+  ;
+  return 0;
+}
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -22072,122 +22073,100 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_header_compiler=yes
+  ac_cv_search_clock_gettime="none required"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_header_compiler=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
-echo "${ECHO_T}$ac_header_compiler" >&6
-
-# Is the header present?
-echo "$as_me:$LINENO: checking $ac_header presence" >&5
-echo $ECHO_N "checking $ac_header presence... $ECHO_C" >&6
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_clock_gettime" = no; then
+  for ac_lib in posix4; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
 cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <$ac_header>
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char clock_gettime ();
+int
+main ()
+{
+clock_gettime ();
+  ;
+  return 0;
+}
 _ACEOF
-if { (eval echo "$as_me:$LINENO: \"$ac_cpp conftest.$ac_ext\"") >&5
-  (eval $ac_cpp conftest.$ac_ext) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } >/dev/null; then
-  if test -s conftest.err; then
-    ac_cpp_err=$ac_cxx_preproc_warn_flag
-    ac_cpp_err=$ac_cpp_err$ac_cxx_werror_flag
-  else
-    ac_cpp_err=
-  fi
-else
-  ac_cpp_err=yes
-fi
-if test -z "$ac_cpp_err"; then
-  ac_header_preproc=yes
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_clock_gettime="-l$ac_lib"
+break
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-  ac_header_preproc=no
-fi
-rm -f conftest.err conftest.$ac_ext
-echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
-echo "${ECHO_T}$ac_header_preproc" >&6
-
-# So?  What about this header?
-case $ac_header_compiler:$ac_header_preproc:$ac_cxx_preproc_warn_flag in
-  yes:no: )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&5
-echo "$as_me: WARNING: $ac_header: accepted by the compiler, rejected by the preprocessor!" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the compiler's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the compiler's result" >&2;}
-    ac_header_preproc=yes
-    ;;
-  no:yes:* )
-    { echo "$as_me:$LINENO: WARNING: $ac_header: present but cannot be compiled" >&5
-echo "$as_me: WARNING: $ac_header: present but cannot be compiled" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     check for missing prerequisite headers?" >&5
-echo "$as_me: WARNING: $ac_header:     check for missing prerequisite headers?" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: see the Autoconf documentation" >&5
-echo "$as_me: WARNING: $ac_header: see the Autoconf documentation" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&5
-echo "$as_me: WARNING: $ac_header:     section \"Present But Cannot Be Compiled\"" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: proceeding with the preprocessor's result" >&5
-echo "$as_me: WARNING: $ac_header: proceeding with the preprocessor's result" >&2;}
-    { echo "$as_me:$LINENO: WARNING: $ac_header: in the future, the compiler will take precedence" >&5
-echo "$as_me: WARNING: $ac_header: in the future, the compiler will take precedence" >&2;}
-    (
-      cat <<\_ASBOX
-## ----------------------------------------- ##
-## Report this to the package-unused lists.  ##
-## ----------------------------------------- ##
-_ASBOX
-    ) |
-      sed "s/^/$as_me: WARNING:     /" >&2
-    ;;
-esac
-echo "$as_me:$LINENO: checking for $ac_header" >&5
-echo $ECHO_N "checking for $ac_header... $ECHO_C" >&6
-if eval "test \"\${$as_ac_Header+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  eval "$as_ac_Header=\$ac_header_preproc"
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_Header'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_Header'}'`" >&6
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
 fi
-if test `eval echo '${'$as_ac_Header'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
- ac_has_unistd_h=yes
-else
-  ac_has_unistd_h=no
+LIBS=$ac_func_search_save_LIBS
 fi
+echo "$as_me:$LINENO: result: $ac_cv_search_clock_gettime" >&5
+echo "${ECHO_T}$ac_cv_search_clock_gettime" >&6
+if test "$ac_cv_search_clock_gettime" != no; then
+  test "$ac_cv_search_clock_gettime" = "none required" || LIBS="$ac_cv_search_clock_gettime $LIBS"
 
-done
-
+fi
 
-    if test x"$ac_has_unistd_h" = x"yes"; then
-      echo "$as_me:$LINENO: checking for monotonic clock" >&5
-echo $ECHO_N "checking for monotonic clock... $ECHO_C" >&6
-      if test x$gcc_no_link = xyes; then
+      echo "$as_me:$LINENO: checking for library containing nanosleep" >&5
+echo $ECHO_N "checking for library containing nanosleep... $ECHO_C" >&6
+if test "${ac_cv_search_nanosleep+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_nanosleep=no
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -22198,17 +22177,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <unistd.h>
-         #include <time.h>
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char nanosleep ();
 int
 main ()
 {
-#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
-          timespec tp;
-         #endif
-          clock_gettime(CLOCK_MONOTONIC, &tp);
-
+nanosleep ();
   ;
   return 0;
 }
@@ -22235,22 +22215,18 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_has_clock_monotonic=yes
+  ac_cv_search_nanosleep="none required"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_has_clock_monotonic=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-
-      echo "$as_me:$LINENO: result: $ac_has_clock_monotonic" >&5
-echo "${ECHO_T}$ac_has_clock_monotonic" >&6
-
-      echo "$as_me:$LINENO: checking for realtime clock" >&5
-echo $ECHO_N "checking for realtime clock... $ECHO_C" >&6
-      if test x$gcc_no_link = xyes; then
+if test "$ac_cv_search_nanosleep" = no; then
+  for ac_lib in posix4; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -22261,17 +22237,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <unistd.h>
-         #include <time.h>
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char nanosleep ();
 int
 main ()
 {
-#if _POSIX_TIMERS > 0
-          timespec tp;
-         #endif
-          clock_gettime(CLOCK_REALTIME, &tp);
-
+nanosleep ();
   ;
   return 0;
 }
@@ -22298,101 +22275,134 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_has_clock_realtime=yes
+  ac_cv_search_nanosleep="-l$ac_lib"
+break
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_has_clock_realtime=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_nanosleep" >&5
+echo "${ECHO_T}$ac_cv_search_nanosleep" >&6
+if test "$ac_cv_search_nanosleep" != no; then
+  test "$ac_cv_search_nanosleep" = "none required" || LIBS="$ac_cv_search_nanosleep $LIBS"
 
-      echo "$as_me:$LINENO: result: $ac_has_clock_realtime" >&5
-echo "${ECHO_T}$ac_has_clock_realtime" >&6
-    fi
+fi
 
-  fi
+    fi
 
-  if test x"$ac_has_clock_monotonic" = x"yes"; then
+    case "$ac_cv_search_clock_gettime" in
+      -l*) GLIBCXX_LIBS=$ac_cv_search_clock_gettime
+      ;;
+    esac
+    case "$ac_cv_search_nanosleep" in
+      -l*) GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_nanosleep"
+      ;;
+    esac
 
-cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_CLOCK_MONOTONIC 1
+    echo "$as_me:$LINENO: checking for library containing sched_yield" >&5
+echo $ECHO_N "checking for library containing sched_yield... $ECHO_C" >&6
+if test "${ac_cv_search_sched_yield+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_func_search_save_LIBS=$LIBS
+ac_cv_search_sched_yield=no
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
 
-  fi
-
-  if test x"$ac_has_clock_realtime" = x"yes"; then
-
-cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_CLOCK_REALTIME 1
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
+int
+main ()
+{
+sched_yield ();
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_search_sched_yield="none required"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  fi
-
-
-
-  CXXFLAGS="$ac_save_CXXFLAGS"
-  LIBS="$ac_save_LIBS"
-  ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-# For gthread support
-
-
-
-  ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS="$CXXFLAGS -fno-exceptions -I${toplevel_srcdir}/gcc"
-
-  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
-  case $target_thread_file in
-    posix)
-      CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
-  esac
-
-  echo "$as_me:$LINENO: checking for gthreads library" >&5
-echo $ECHO_N "checking for gthreads library... $ECHO_C" >&6
-
-  cat >conftest.$ac_ext <<_ACEOF
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+if test "$ac_cv_search_sched_yield" = no; then
+  for ac_lib in rt posix4; do
+    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include "gthr.h"
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sched_yield ();
 int
 main ()
 {
-
-      #ifndef __GTHREADS_CXX0X
-      #error
-      #endif
-
-      // In case of POSIX threads check _POSIX_TIMEOUTS too.
-      #if (defined(_PTHREADS) \
-           && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
-      #error
-      #endif
-
+sched_yield ();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -22406,61 +22416,63 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_has_gthreads=yes
+  ac_cv_search_sched_yield="-l$ac_lib"
+break
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_has_gthreads=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+  done
+fi
+LIBS=$ac_func_search_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_search_sched_yield" >&5
+echo "${ECHO_T}$ac_cv_search_sched_yield" >&6
+if test "$ac_cv_search_sched_yield" != no; then
+  test "$ac_cv_search_sched_yield" = "none required" || LIBS="$ac_cv_search_sched_yield $LIBS"
 
-  echo "$as_me:$LINENO: result: $ac_has_gthreads" >&5
-echo "${ECHO_T}$ac_has_gthreads" >&6
+fi
 
-  if test x"$ac_has_gthreads" = x"yes"; then
+
+    case "$ac_cv_search_sched_yield" in
+      -lposix4*)
+      GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
 
 cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_HAS_GTHREADS 1
+#define _GLIBCXX_USE_SCHED_YIELD 1
 _ACEOF
 
-  fi
-
-  CXXFLAGS="$ac_save_CXXFLAGS"
-  ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-
-# For nanosleep support
-
-
-  echo "$as_me:$LINENO: checking for nanosleep" >&5
-echo $ECHO_N "checking for nanosleep... $ECHO_C" >&6
+      ;;
+      -lrt*)
+      if test x"$enable_libstdcxx_time" = x"rt"; then
+        GLIBCXX_LIBS="$GLIBCXX_LIBS $ac_cv_search_sched_yield"
 
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_SCHED_YIELD 1
+_ACEOF
 
+      fi
+      ;;
+      *)
 
-  ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_SCHED_YIELD 1
+_ACEOF
 
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS="$CXXFLAGS -fno-exceptions"
+      ;;
+    esac
 
-  ac_has_nanosleep=no;
 
-for ac_header in time.h
+for ac_header in unistd.h
 do
 as_ac_Header=`echo "ac_cv_header_$ac_header" | $as_tr_sh`
 if eval "test \"\${$as_ac_Header+set}\" = set"; then
@@ -22604,34 +22616,172 @@ if test `eval echo '${'$as_ac_Header'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
 #define `echo "HAVE_$ac_header" | $as_tr_cpp` 1
 _ACEOF
- ac_has_time_h=yes
+ ac_has_unistd_h=yes
 else
-  ac_has_time_h=no
+  ac_has_unistd_h=no
 fi
 
 done
 
-  if test x"$ac_has_time_h" = x"yes"; then
-    echo "$as_me:$LINENO: checking for nanosleep" >&5
+
+    if test x"$ac_has_unistd_h" = x"yes"; then
+      echo "$as_me:$LINENO: checking for monotonic clock" >&5
+echo $ECHO_N "checking for monotonic clock... $ECHO_C" >&6
+      if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <unistd.h>
+         #include <time.h>
+
+int
+main ()
+{
+#if _POSIX_TIMERS > 0 && defined(_POSIX_MONOTONIC_CLOCK)
+          timespec tp;
+         #endif
+          clock_gettime(CLOCK_MONOTONIC, &tp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_has_clock_monotonic=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_has_clock_monotonic=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+      echo "$as_me:$LINENO: result: $ac_has_clock_monotonic" >&5
+echo "${ECHO_T}$ac_has_clock_monotonic" >&6
+
+      echo "$as_me:$LINENO: checking for realtime clock" >&5
+echo $ECHO_N "checking for realtime clock... $ECHO_C" >&6
+      if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <unistd.h>
+         #include <time.h>
+
+int
+main ()
+{
+#if _POSIX_TIMERS > 0
+          timespec tp;
+         #endif
+          clock_gettime(CLOCK_REALTIME, &tp);
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_has_clock_realtime=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_has_clock_realtime=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+
+      echo "$as_me:$LINENO: result: $ac_has_clock_realtime" >&5
+echo "${ECHO_T}$ac_has_clock_realtime" >&6
+
+      echo "$as_me:$LINENO: checking for nanosleep" >&5
 echo $ECHO_N "checking for nanosleep... $ECHO_C" >&6
-    cat >conftest.$ac_ext <<_ACEOF
+      if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <time.h>
+#include <unistd.h>
+         #include <time.h>
+
 int
 main ()
 {
-timespec ts; nanosleep(&ts, 0);
+#if _POSIX_TIMERS > 0
+          timespec tp;
+         #endif
+          nanosleep(&tp, 0);
+
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
@@ -22645,7 +22795,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
@@ -22658,10 +22808,28 @@ sed 's/^/| /' conftest.$ac_ext >&5
 
 ac_has_nanosleep=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
-    echo "$as_me:$LINENO: result: $ac_has_nanosleep" >&5
+      echo "$as_me:$LINENO: result: $ac_has_nanosleep" >&5
 echo "${ECHO_T}$ac_has_nanosleep" >&6
+    fi
+  fi
+
+  if test x"$ac_has_clock_monotonic" = x"yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_CLOCK_MONOTONIC 1
+_ACEOF
+
+  fi
+
+  if test x"$ac_has_clock_realtime" = x"yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_CLOCK_REALTIME 1
+_ACEOF
+
   fi
 
   if test x"$ac_has_nanosleep" = x"yes"; then
@@ -22672,6 +22840,108 @@ _ACEOF
 
   fi
 
+
+
+  CXXFLAGS="$ac_save_CXXFLAGS"
+  LIBS="$ac_save_LIBS"
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+
+# For gthread support
+
+
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS="$CXXFLAGS -fno-exceptions -I${toplevel_srcdir}/gcc"
+
+  target_thread_file=`$CXX -v 2>&1 | sed -n 's/^Thread model: //p'`
+  case $target_thread_file in
+    posix)
+      CXXFLAGS="$CXXFLAGS -DSUPPORTS_WEAK -DGTHREAD_USE_WEAK -D_PTHREADS"
+  esac
+
+  echo "$as_me:$LINENO: checking for gthreads library" >&5
+echo $ECHO_N "checking for gthreads library... $ECHO_C" >&6
+
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include "gthr.h"
+int
+main ()
+{
+
+      #ifndef __GTHREADS_CXX0X
+      #error
+      #endif
+
+      // In case of POSIX threads check _POSIX_TIMEOUTS too.
+      #if (defined(_PTHREADS) \
+           && (!defined(_POSIX_TIMEOUTS) || _POSIX_TIMEOUTS <= 0))
+      #error
+      #endif
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_has_gthreads=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_has_gthreads=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+
+  echo "$as_me:$LINENO: result: $ac_has_gthreads" >&5
+echo "${ECHO_T}$ac_has_gthreads" >&6
+
+  if test x"$ac_has_gthreads" = x"yes"; then
+
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_HAS_GTHREADS 1
+_ACEOF
+
+  fi
+
   CXXFLAGS="$ac_save_CXXFLAGS"
   ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
@@ -24577,10 +24847,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -24602,7 +24872,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysign(0, 0);
+ sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -24629,12 +24899,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -24647,12 +24917,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -24760,10 +25030,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -24785,7 +25055,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysign(0, 0);
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -24812,12 +25082,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -24830,12 +25100,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -24949,10 +25219,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -24971,193 +25241,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-int
-main ()
-{
- sincos(0, 0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_sincos_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
-
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
-
-for ac_func in sincos
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
 int
 main ()
 {
- _sincos(0, 0, 0);
+ fpclass(0);
   ;
   return 0;
 }
@@ -25184,12 +25275,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25202,12 +25293,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -25313,18 +25404,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -25350,7 +25435,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fpclass(0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -25377,12 +25462,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -25395,199 +25480,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in fpclass
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
-int
-main ()
-{
- _fpclass(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func__fpclass_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
-
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
-
-for ac_func in _fpclass
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35109,10 +35007,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35134,7 +35032,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -35161,12 +35059,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35179,12 +35077,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35292,10 +35190,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35317,7 +35215,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -35344,12 +35242,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35362,12 +35260,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35481,10 +35379,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35503,10 +35401,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- atan2l(0, 0);
+ expl(0);
   ;
   return 0;
 }
@@ -35533,12 +35435,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35551,12 +35453,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35664,10 +35566,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35686,10 +35588,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _atan2l(0, 0);
+ _expl(0);
   ;
   return 0;
 }
@@ -35716,12 +35622,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35734,12 +35640,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -35853,10 +35759,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -35882,7 +35788,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- expl(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -35909,12 +35815,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -35927,12 +35833,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36040,10 +35946,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36069,7 +35975,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _expl(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -36096,12 +36002,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36114,12 +36020,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36233,10 +36139,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36255,14 +36161,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fabsl(0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -36289,12 +36191,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36307,12 +36209,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36420,10 +36322,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36442,14 +36344,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fabsl(0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -36476,12 +36374,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36494,12 +36392,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36613,10 +36511,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36638,7 +36536,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fmodl(0, 0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -36665,12 +36563,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36683,12 +36581,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36796,10 +36694,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -36821,7 +36719,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fmodl(0, 0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -36848,12 +36746,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -36866,12 +36764,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -36985,10 +36883,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37010,7 +36908,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpl(0, 0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -37037,12 +36935,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37055,12 +36953,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37168,10 +37066,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37193,7 +37091,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpl(0, 0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -37220,12 +37118,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37238,12 +37136,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37357,10 +37255,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37382,7 +37280,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotl(0, 0);
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -37409,12 +37307,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37427,12 +37325,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37540,10 +37438,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37565,7 +37463,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -37592,12 +37490,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37610,12 +37508,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37729,10 +37627,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37751,10 +37649,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- ldexpl(0, 0);
+ logl(0);
   ;
   return 0;
 }
@@ -37781,12 +37683,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37799,12 +37701,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -37912,10 +37814,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -37934,10 +37836,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _ldexpl(0, 0);
+ _logl(0);
   ;
   return 0;
 }
@@ -37964,12 +37870,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -37982,12 +37888,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38101,10 +38007,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38130,7 +38036,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logl(0);
+ log10l(0);
   ;
   return 0;
 }
@@ -38157,12 +38063,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38175,12 +38081,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38288,10 +38194,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38317,7 +38223,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logl(0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -38344,12 +38250,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38362,12 +38268,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _logl
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38481,10 +38387,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38503,14 +38409,193 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+int
+main ()
+{
+ modfl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_modfl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_modfl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+
+for ac_func in modfl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- log10l(0);
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -38537,12 +38622,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38555,199 +38640,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in log10l
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
-int
-main ()
-{
- _log10l(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func__log10l_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
-
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
-
-for ac_func in _log10l
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -38861,10 +38759,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -38886,7 +38784,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modfl(0, 0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -38913,12 +38811,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -38931,12 +38829,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39044,10 +38942,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39069,7 +38967,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modfl(0, 0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -39096,12 +38994,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39114,12 +39012,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _modfl
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39233,10 +39131,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39255,10 +39153,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powl(0, 0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -39285,12 +39187,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39303,12 +39205,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39416,10 +39318,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39438,10 +39340,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powl(0, 0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -39468,12 +39374,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39486,12 +39392,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _powl
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39605,10 +39511,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39627,14 +39533,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- sqrtl(0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -39661,12 +39563,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39679,12 +39581,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in sqrtl
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39792,10 +39694,199 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincosl(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sincosl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__sincosl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
+
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
+
+for ac_func in _sincosl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -39821,7 +39912,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtl(0);
+ finitel(0);
   ;
   return 0;
 }
@@ -39848,12 +39939,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -39866,12 +39957,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in _sqrtl
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -39977,18 +40068,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40007,10 +40092,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- sincosl(0, 0, 0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -40037,12 +40126,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40055,12 +40144,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in sincosl
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40166,12 +40255,26 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+
+
+
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40189,11 +40292,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- _sincosl(0, 0, 0);
+ strtold(0, 0);
   ;
   return 0;
 }
@@ -40220,12 +40323,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func_strtold_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40238,12 +40341,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
-
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in _sincosl
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40349,18 +40451,16 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
 
 
-
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -40378,15 +40478,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- finitel(0);
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -40413,12 +40509,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -40431,12 +40527,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
-
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in finitel
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -40542,150 +40637,76 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
-int
-main ()
-{
- _finitel(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+
+  # For /dev/random and /dev/urandom for TR1.
+
+
+  echo "$as_me:$LINENO: checking for \"/dev/random\" and \"/dev/urandom\" for TR1 random_device" >&5
+echo $ECHO_N "checking for \"/dev/random\" and \"/dev/urandom\" for TR1 random_device... $ECHO_C" >&6
+  if test "${glibcxx_cv_random_tr1+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+    if test -r /dev/random && test -r /dev/urandom; then
+      glibcxx_cv_random_tr1=yes;
+    else
+      glibcxx_cv_random_tr1=no;
+    fi
+
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+  echo "$as_me:$LINENO: result: $glibcxx_cv_random_tr1" >&5
+echo "${ECHO_T}$glibcxx_cv_random_tr1" >&6
+
+  if test x"$glibcxx_cv_random_tr1" = x"yes"; then
 
-fi
+cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_RANDOM_TR1 1
+_ACEOF
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in _finitel
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+  # For TLS support.
+
+   # Check whether --enable-tls or --disable-tls was given.
+if test "${enable_tls+set}" = set; then
+  enableval="$enable_tls"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable tls must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable tls must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_tls=yes
+fi;
+
+  echo "$as_me:$LINENO: checking whether the target supports thread-local storage" >&5
+echo $ECHO_N "checking whether the target supports thread-local storage... $ECHO_C" >&6
+if test "${gcc_cv_have_tls+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+
+    if test "$cross_compiling" = yes; then
+                if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
 fi
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+__thread int a; int b; int main() { return a = b; }
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -40709,174 +40730,41 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  gcc_cv_have_tls=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+gcc_cv_have_tls=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-    fi
-  fi
-
-
-
-
-
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
-
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
+rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-  LIBS="-lm $LIBS"
-
-fi
-
-
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+                      chktls_save_LDFLAGS="$LDFLAGS"
+      LDFLAGS="-static $LDFLAGS"
+      if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
 fi
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+int main() { return 0; }
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -40900,149 +40788,55 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
-fi
-done
-
-
-
-for ac_func in __signbit
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+  if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
+rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  gcc_cv_have_tls=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
-fi
-done
-
-
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+gcc_cv_have_tls=yes
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+      LDFLAGS="$chktls_save_LDFLAGS"
+      if test $gcc_cv_have_tls = yes; then
+                                               chktls_save_CFLAGS="$CFLAGS"
+       thread_CFLAGS=failed
+       for flag in '' '-pthread' '-lpthread'; do
+         CFLAGS="$flag $chktls_save_CFLAGS"
+         if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -41053,47 +40847,12 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <pthread.h>
+               void *g(void *d) { return NULL; }
 int
 main ()
 {
-return f != $ac_func;
+pthread_t t; pthread_create(&t,NULL,g,NULL);
   ;
   return 0;
 }
@@ -41120,647 +40879,712 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  thread_CFLAGS="$flag"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
-fi
-done
-
-
-          if test x$ac_cv_func_copysignl = x"yes"; then
-
-for ac_func in __signbitl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+         if test "X$thread_CFLAGS" != Xfailed; then
+           break
+         fi
+       done
+       CFLAGS="$chktls_save_CFLAGS"
+       if test "X$thread_CFLAGS" != Xfailed; then
+         CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS"
+         if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <pthread.h>
+               __thread int a;
+               static int *a_in_other_thread;
+               static void *
+               thread_func (void *arg)
+               {
+                 a_in_other_thread = &a;
+                 return (void *)0;
+               }
 int
 main ()
 {
-return f != $ac_func;
+pthread_t thread;
+               void *thread_retval;
+               int *a_in_main_thread;
+               if (pthread_create (&thread, (pthread_attr_t *)0,
+                                   thread_func, (void *)0))
+                 return 0;
+               a_in_main_thread = &a;
+               if (pthread_join (thread, &thread_retval))
+                 return 0;
+               return (a_in_other_thread == a_in_main_thread);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
+rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  gcc_cv_have_tls=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+         CFLAGS="$chktls_save_CFLAGS"
+       fi
+      fi
 else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-done
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_have_tls" >&5
+echo "${ECHO_T}$gcc_cv_have_tls" >&6
+  if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
 
-  fi
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TLS 1
+_ACEOF
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
   fi
 
+  # For iconv support.
 
+      if test "X$prefix" = "XNONE"; then
+    acl_final_prefix="$ac_default_prefix"
+  else
+    acl_final_prefix="$prefix"
+  fi
+  if test "X$exec_prefix" = "XNONE"; then
+    acl_final_exec_prefix='${prefix}'
+  else
+    acl_final_exec_prefix="$exec_prefix"
+  fi
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
+  prefix="$acl_save_prefix"
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-int
-main ()
-{
- strtold(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+# Check whether --with-gnu-ld or --without-gnu-ld was given.
+if test "${with_gnu_ld+set}" = set; then
+  withval="$with_gnu_ld"
+  test "$withval" = no || with_gnu_ld=yes
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_strtold_use=no
+  with_gnu_ld=no
+fi;
+# Prepare PATH_SEPARATOR.
+# The user is always right.
+if test "${PATH_SEPARATOR+set}" != set; then
+  echo "#! /bin/sh" >conf$$.sh
+  echo  "exit 0"   >>conf$$.sh
+  chmod +x conf$$.sh
+  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
+    PATH_SEPARATOR=';'
+  else
+    PATH_SEPARATOR=:
+  fi
+  rm -f conf$$.sh
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
+ac_prog=ld
+if test "$GCC" = yes; then
+  # Check if gcc -print-prog-name=ld gives a path.
+  echo "$as_me:$LINENO: checking for ld used by GCC" >&5
+echo $ECHO_N "checking for ld used by GCC... $ECHO_C" >&6
+  case $host in
+  *-*-mingw*)
+    # gcc leaves a trailing carriage return which upsets mingw
+    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
+  *)
+    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
+  esac
+  case $ac_prog in
+    # Accept absolute paths.
+    [\\/]* | [A-Za-z]:[\\/]*)
+      re_direlt='/[^/][^/]*/\.\./'
+      # Canonicalize the path of ld
+      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
+      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
+       ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
+      done
+      test -z "$LD" && LD="$ac_prog"
+      ;;
+  "")
+    # If it fails, then pretend we aren't using GCC.
+    ac_prog=ld
+    ;;
+  *)
+    # If it is relative, then search for the first ld in PATH.
+    with_gnu_ld=unknown
+    ;;
+  esac
+elif test "$with_gnu_ld" = yes; then
+  echo "$as_me:$LINENO: checking for GNU ld" >&5
+echo $ECHO_N "checking for GNU ld... $ECHO_C" >&6
+else
+  echo "$as_me:$LINENO: checking for non-GNU ld" >&5
+echo $ECHO_N "checking for non-GNU ld... $ECHO_C" >&6
 fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
-
-for ac_func in strtold
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+if test "${acl_cv_path_LD+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  if test -z "$LD"; then
+  IFS="${IFS=  }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
+  for ac_dir in $PATH; do
+    test -z "$ac_dir" && ac_dir=.
+    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
+      acl_cv_path_LD="$ac_dir/$ac_prog"
+      # Check to see if the program is GNU ld.  I'd rather use --version,
+      # but apparently some GNU ld's only accept -v.
+      # Break only if it was the GNU/non-GNU ld that we prefer.
+      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
+       test "$with_gnu_ld" != no && break
+      else
+       test "$with_gnu_ld" != yes && break
+      fi
+    fi
+  done
+  IFS="$ac_save_ifs"
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
+  acl_cv_path_LD="$LD" # Let the user override the test with a path.
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
+LD="$acl_cv_path_LD"
+if test -n "$LD"; then
+  echo "$as_me:$LINENO: result: $LD" >&5
+echo "${ECHO_T}$LD" >&6
+else
+  echo "$as_me:$LINENO: result: no" >&5
+echo "${ECHO_T}no" >&6
 fi
-done
-
-  fi
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+test -z "$LD" && { { echo "$as_me:$LINENO: error: no acceptable ld found in \$PATH" >&5
+echo "$as_me: error: no acceptable ld found in \$PATH" >&2;}
+   { (exit 1); exit 1; }; }
+echo "$as_me:$LINENO: checking if the linker ($LD) is GNU ld" >&5
+echo $ECHO_N "checking if the linker ($LD) is GNU ld... $ECHO_C" >&6
+if test "${acl_cv_prog_gnu_ld+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-int
-main ()
-{
- strtof(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  # I'd rather use --version here, but apparently some GNU ld's only accept -v.
+if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
+  acl_cv_prog_gnu_ld=yes
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_strtof_use=no
+  acl_cv_prog_gnu_ld=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
 fi
+echo "$as_me:$LINENO: result: $acl_cv_prog_gnu_ld" >&5
+echo "${ECHO_T}$acl_cv_prog_gnu_ld" >&6
+with_gnu_ld=$acl_cv_prog_gnu_ld
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in strtof
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+                                                echo "$as_me:$LINENO: checking for shared library run path origin" >&5
+echo $ECHO_N "checking for shared library run path origin... $ECHO_C" >&6
+if test "${acl_cv_rpath+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
+    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
+    . ./conftest.sh
+    rm -f ./conftest.sh
+    acl_cv_rpath=done
 
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+fi
+echo "$as_me:$LINENO: result: $acl_cv_rpath" >&5
+echo "${ECHO_T}$acl_cv_rpath" >&6
+  wl="$acl_cv_wl"
+  libext="$acl_cv_libext"
+  shlibext="$acl_cv_shlibext"
+  hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
+  hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
+  hardcode_direct="$acl_cv_hardcode_direct"
+  hardcode_minus_L="$acl_cv_hardcode_minus_L"
+    # Check whether --enable-rpath or --disable-rpath was given.
+if test "${enable_rpath+set}" = set; then
+  enableval="$enable_rpath"
+  :
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+  enable_rpath=yes
+fi;
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
 
-fi
-done
 
-  fi
 
 
 
 
+    use_additional=yes
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
 
+    eval additional_includedir=\"$includedir\"
+    eval additional_libdir=\"$libdir\"
 
-  # For /dev/random and /dev/urandom for TR1.
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
 
-  echo "$as_me:$LINENO: checking for \"/dev/random\" and \"/dev/urandom\" for TR1 random_device" >&5
-echo $ECHO_N "checking for \"/dev/random\" and \"/dev/urandom\" for TR1 random_device... $ECHO_C" >&6
-  if test "${glibcxx_cv_random_tr1+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+# Check whether --with-libiconv-prefix or --without-libiconv-prefix was given.
+if test "${with_libiconv_prefix+set}" = set; then
+  withval="$with_libiconv_prefix"
 
-    if test -r /dev/random && test -r /dev/urandom; then
-      glibcxx_cv_random_tr1=yes;
+    if test "X$withval" = "Xno"; then
+      use_additional=no
     else
-      glibcxx_cv_random_tr1=no;
-    fi
-
-fi
+      if test "X$withval" = "X"; then
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_random_tr1" >&5
-echo "${ECHO_T}$glibcxx_cv_random_tr1" >&6
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
 
-  if test x"$glibcxx_cv_random_tr1" = x"yes"; then
+          eval additional_includedir=\"$includedir\"
+          eval additional_libdir=\"$libdir\"
 
-cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_RANDOM_TR1 1
-_ACEOF
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
-  fi
+      else
+        additional_includedir="$withval/include"
+        additional_libdir="$withval/lib"
+      fi
+    fi
 
+fi;
+      LIBICONV=
+  LTLIBICONV=
+  INCICONV=
+  rpathdirs=
+  ltrpathdirs=
+  names_already_handled=
+  names_next_round='iconv '
+  while test -n "$names_next_round"; do
+    names_this_round="$names_next_round"
+    names_next_round=
+    for name in $names_this_round; do
+      already_handled=
+      for n in $names_already_handled; do
+        if test "$n" = "$name"; then
+          already_handled=yes
+          break
+        fi
+      done
+      if test -z "$already_handled"; then
+        names_already_handled="$names_already_handled $name"
+                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
+        eval value=\"\$HAVE_LIB$uppername\"
+        if test -n "$value"; then
+          if test "$value" = yes; then
+            eval value=\"\$LIB$uppername\"
+            test -z "$value" || LIBICONV="${LIBICONV}${LIBICONV:+ }$value"
+            eval value=\"\$LTLIB$uppername\"
+            test -z "$value" || LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$value"
+          else
+                                    :
+          fi
+        else
+                              found_dir=
+          found_la=
+          found_so=
+          found_a=
+          if test $use_additional = yes; then
+            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
+              found_dir="$additional_libdir"
+              found_so="$additional_libdir/lib$name.$shlibext"
+              if test -f "$additional_libdir/lib$name.la"; then
+                found_la="$additional_libdir/lib$name.la"
+              fi
+            else
+              if test -f "$additional_libdir/lib$name.$libext"; then
+                found_dir="$additional_libdir"
+                found_a="$additional_libdir/lib$name.$libext"
+                if test -f "$additional_libdir/lib$name.la"; then
+                  found_la="$additional_libdir/lib$name.la"
+                fi
+              fi
+            fi
+          fi
+          if test "X$found_dir" = "X"; then
+            for x in $LDFLAGS $LTLIBICONV; do
 
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
-  # For TLS support.
+              case "$x" in
+                -L*)
+                  dir=`echo "X$x" | sed -e 's/^X-L//'`
+                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
+                    found_dir="$dir"
+                    found_so="$dir/lib$name.$shlibext"
+                    if test -f "$dir/lib$name.la"; then
+                      found_la="$dir/lib$name.la"
+                    fi
+                  else
+                    if test -f "$dir/lib$name.$libext"; then
+                      found_dir="$dir"
+                      found_a="$dir/lib$name.$libext"
+                      if test -f "$dir/lib$name.la"; then
+                        found_la="$dir/lib$name.la"
+                      fi
+                    fi
+                  fi
+                  ;;
+              esac
+              if test "X$found_dir" != "X"; then
+                break
+              fi
+            done
+          fi
+          if test "X$found_dir" != "X"; then
+                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$found_dir -l$name"
+            if test "X$found_so" != "X"; then
+                                                        if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+              else
+                                                                                haveit=
+                for x in $ltrpathdirs; do
+                  if test "X$x" = "X$found_dir"; then
+                    haveit=yes
+                    break
+                  fi
+                done
+                if test -z "$haveit"; then
+                  ltrpathdirs="$ltrpathdirs $found_dir"
+                fi
+                                if test "$hardcode_direct" = yes; then
+                                                      LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                else
+                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                                                            haveit=
+                    for x in $rpathdirs; do
+                      if test "X$x" = "X$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      rpathdirs="$rpathdirs $found_dir"
+                    fi
+                  else
+                                                                                haveit=
+                    for x in $LDFLAGS $LIBICONV; do
 
-   # Check whether --enable-tls or --disable-tls was given.
-if test "${enable_tls+set}" = set; then
-  enableval="$enable_tls"
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
-      case "$enableval" in
-       yes|no) ;;
-       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable tls must be yes or no" >&5
-echo "$as_me: error: Argument to enable/disable tls must be yes or no" >&2;}
-   { (exit 1); exit 1; }; } ;;
-      esac
+                      if test "X$x" = "X-L$found_dir"; then
+                        haveit=yes
+                        break
+                      fi
+                    done
+                    if test -z "$haveit"; then
+                      LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir"
+                    fi
+                    if test "$hardcode_minus_L" != no; then
+                                                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
+                    else
+                                                                                                                                                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+                    fi
+                  fi
+                fi
+              fi
+            else
+              if test "X$found_a" != "X"; then
+                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_a"
+              else
+                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir -l$name"
+              fi
+            fi
+                        additional_includedir=
+            case "$found_dir" in
+              */lib | */lib/)
+                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
+                additional_includedir="$basedir/include"
+                ;;
+            esac
+            if test "X$additional_includedir" != "X"; then
+                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
+                haveit=
+                if test "X$additional_includedir" = "X/usr/local/include"; then
+                  if test -n "$GCC"; then
+                    case $host_os in
+                      linux*) haveit=yes;;
+                    esac
+                  fi
+                fi
+                if test -z "$haveit"; then
+                  for x in $CPPFLAGS $INCICONV; do
 
-else
-  enable_tls=yes
-fi;
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
-  echo "$as_me:$LINENO: checking whether the target supports thread-local storage" >&5
-echo $ECHO_N "checking whether the target supports thread-local storage... $ECHO_C" >&6
-if test "${gcc_cv_have_tls+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+                    if test "X$x" = "X-I$additional_includedir"; then
+                      haveit=yes
+                      break
+                    fi
+                  done
+                  if test -z "$haveit"; then
+                    if test -d "$additional_includedir"; then
+                                            INCICONV="${INCICONV}${INCICONV:+ }-I$additional_includedir"
+                    fi
+                  fi
+                fi
+              fi
+            fi
+                        if test -n "$found_la"; then
+                                                        save_libdir="$libdir"
+              case "$found_la" in
+                */* | *\\*) . "$found_la" ;;
+                *) . "./$found_la" ;;
+              esac
+              libdir="$save_libdir"
+                            for dep in $dependency_libs; do
+                case "$dep" in
+                  -L*)
+                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
+                                                                                                                                                                if test "X$additional_libdir" != "X/usr/lib"; then
+                      haveit=
+                      if test "X$additional_libdir" = "X/usr/local/lib"; then
+                        if test -n "$GCC"; then
+                          case $host_os in
+                            linux*) haveit=yes;;
+                          esac
+                        fi
+                      fi
+                      if test -z "$haveit"; then
+                        haveit=
+                        for x in $LDFLAGS $LIBICONV; do
 
-    if test "$cross_compiling" = yes; then
-                if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-__thread int a; int b; int main() { return a = b; }
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  gcc_cv_have_tls=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
 
-gcc_cv_have_tls=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }-L$additional_libdir"
+                          fi
+                        fi
+                        haveit=
+                        for x in $LDFLAGS $LTLIBICONV; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+                          if test "X$x" = "X-L$additional_libdir"; then
+                            haveit=yes
+                            break
+                          fi
+                        done
+                        if test -z "$haveit"; then
+                          if test -d "$additional_libdir"; then
+                                                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$additional_libdir"
+                          fi
+                        fi
+                      fi
+                    fi
+                    ;;
+                  -R*)
+                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
+                    if test "$enable_rpath" != no; then
+                                                                  haveit=
+                      for x in $rpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        rpathdirs="$rpathdirs $dir"
+                      fi
+                                                                  haveit=
+                      for x in $ltrpathdirs; do
+                        if test "X$x" = "X$dir"; then
+                          haveit=yes
+                          break
+                        fi
+                      done
+                      if test -z "$haveit"; then
+                        ltrpathdirs="$ltrpathdirs $dir"
+                      fi
+                    fi
+                    ;;
+                  -l*)
+                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
+                    ;;
+                  *.la)
+                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
+                    ;;
+                  *)
+                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$dep"
+                    LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$dep"
+                    ;;
+                esac
+              done
+            fi
+          else
+                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
+            LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-l$name"
+          fi
+        fi
+      fi
+    done
+  done
+  if test "X$rpathdirs" != "X"; then
+    if test -n "$hardcode_libdir_separator"; then
+                        alldirs=
+      for found_dir in $rpathdirs; do
+        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
+      done
+            acl_save_libdir="$libdir"
+      libdir="$alldirs"
+      eval flag=\"$hardcode_libdir_flag_spec\"
+      libdir="$acl_save_libdir"
+      LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+    else
+            for found_dir in $rpathdirs; do
+        acl_save_libdir="$libdir"
+        libdir="$found_dir"
+        eval flag=\"$hardcode_libdir_flag_spec\"
+        libdir="$acl_save_libdir"
+        LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
+      done
+    fi
+  fi
+  if test "X$ltrpathdirs" != "X"; then
+            for found_dir in $ltrpathdirs; do
+      LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-R$found_dir"
+    done
+  fi
 
 
+
+
+
+
+
+          am_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCICONV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  echo "$as_me:$LINENO: checking for iconv" >&5
+echo $ECHO_N "checking for iconv... $ECHO_C" >&6
+if test "${am_cv_func_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  cat >conftest.$ac_ext <<_ACEOF
-__thread int a; int b; int main() { return a = b; }
-_ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-                      chktls_save_LDFLAGS="$LDFLAGS"
-      LDFLAGS="-static $LDFLAGS"
-      if test x$gcc_no_link = xyes; then
+
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
 fi
 cat >conftest.$ac_ext <<_ACEOF
-int main() { return 0; }
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+#include <iconv.h>
+int
+main ()
+{
+iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);
+  ;
+  return 0;
+}
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -41784,55 +41608,18 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
-else
-  cat >conftest.$ac_ext <<_ACEOF
-__thread int a; int b; int main() { return a = b; }
-_ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  gcc_cv_have_tls=yes
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-( exit $ac_status )
-gcc_cv_have_tls=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
+  am_cv_func_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-gcc_cv_have_tls=yes
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-      LDFLAGS="$chktls_save_LDFLAGS"
-      if test $gcc_cv_have_tls = yes; then
-                                               chktls_save_CFLAGS="$CFLAGS"
-       thread_CFLAGS=failed
-       for flag in '' '-pthread' '-lpthread'; do
-         CFLAGS="$flag $chktls_save_CFLAGS"
-         if test x$gcc_no_link = xyes; then
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -41843,12 +41630,14 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <pthread.h>
-               void *g(void *d) { return NULL; }
+#include <stdlib.h>
+#include <iconv.h>
 int
 main ()
 {
-pthread_t t; pthread_create(&t,NULL,g,NULL);
+iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);
   ;
   return 0;
 }
@@ -41875,7 +41664,8 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  thread_CFLAGS="$flag"
+  am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
@@ -41883,739 +41673,9535 @@ sed 's/^/| /' conftest.$ac_ext >&5
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-         if test "X$thread_CFLAGS" != Xfailed; then
-           break
-         fi
-       done
-       CFLAGS="$chktls_save_CFLAGS"
-       if test "X$thread_CFLAGS" != Xfailed; then
-         CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS"
-         if test "$cross_compiling" = yes; then
-  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
-echo "$as_me: error: in \`$ac_pwd':" >&2;}
-{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&5
-echo "$as_me: error: cannot run test program while cross compiling
-See \`config.log' for more details." >&2;}
-   { (exit 1); exit 1; }; }; }
+      LIBS="$am_save_LIBS"
+    fi
+
+fi
+echo "$as_me:$LINENO: result: $am_cv_func_iconv" >&5
+echo "${ECHO_T}$am_cv_func_iconv" >&6
+  if test "$am_cv_func_iconv" = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ICONV 1
+_ACEOF
+
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    echo "$as_me:$LINENO: checking how to link with libiconv" >&5
+echo $ECHO_N "checking how to link with libiconv... $ECHO_C" >&6
+    echo "$as_me:$LINENO: result: $LIBICONV" >&5
+echo "${ECHO_T}$LIBICONV" >&6
+  else
+            CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
+
+
+
+  if test "$am_cv_func_iconv" = yes; then
+    echo "$as_me:$LINENO: checking for iconv declaration" >&5
+echo $ECHO_N "checking for iconv declaration... $ECHO_C" >&6
+    if test "${am_cv_proto_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  cat >conftest.$ac_ext <<_ACEOF
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <pthread.h>
-               __thread int a;
-               static int *a_in_other_thread;
-               static void *
-               thread_func (void *arg)
-               {
-                 a_in_other_thread = &a;
-                 return (void *)0;
-               }
+
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
+
 int
 main ()
 {
-pthread_t thread;
-               void *thread_retval;
-               int *a_in_main_thread;
-               if (pthread_create (&thread, (pthread_attr_t *)0,
-                                   thread_func, (void *)0))
-                 return 0;
-               a_in_main_thread = &a;
-               if (pthread_join (thread, &thread_retval))
-                 return 0;
-               return (a_in_other_thread == a_in_main_thread);
+
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>&5
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  gcc_cv_have_tls=yes
+  am_cv_proto_iconv_arg1=""
 else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
+  echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-gcc_cv_have_tls=no
+am_cv_proto_iconv_arg1="const"
 fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"
 fi
-         CFLAGS="$chktls_save_CFLAGS"
-       fi
-      fi
-else
-  echo "$as_me: program exited with status $ac_status" >&5
-echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-( exit $ac_status )
-gcc_cv_have_tls=no
-fi
-rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
-fi
-fi
-echo "$as_me:$LINENO: result: $gcc_cv_have_tls" >&5
-echo "${ECHO_T}$gcc_cv_have_tls" >&6
-  if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
+    am_cv_proto_iconv=`echo "$am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    echo "$as_me:$LINENO: result: ${ac_t:-
+         }$am_cv_proto_iconv" >&5
+echo "${ECHO_T}${ac_t:-
+         }$am_cv_proto_iconv" >&6
 
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_TLS 1
+cat >>confdefs.h <<_ACEOF
+#define ICONV_CONST $am_cv_proto_iconv_arg1
 _ACEOF
 
   fi
 
-  # For iconv support.
 
-      if test "X$prefix" = "XNONE"; then
-    acl_final_prefix="$ac_default_prefix"
-  else
-    acl_final_prefix="$prefix"
-  fi
-  if test "X$exec_prefix" = "XNONE"; then
-    acl_final_exec_prefix='${prefix}'
-  else
-    acl_final_exec_prefix="$exec_prefix"
-  fi
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  eval acl_final_exec_prefix=\"$acl_final_exec_prefix\"
-  prefix="$acl_save_prefix"
+else
 
+  # This lets us hard-code the functionality we know we'll have in the cross
+  # target environment.  "Let" is a sugar-coated word placed on an especially
+  # dull and tedious hack, actually.
+  #
+  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
+  # that involve linking, can't be used:
+  #    "cannot open sim-crt0.o"
+  #    "cannot open crt0.o"
+  # etc.  All this is because there currently exists no unified, consistent
+  # way for top level CC information to be passed down to target directories:
+  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
+  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
+  # crosses can be removed.
 
-# Check whether --with-gnu-ld or --without-gnu-ld was given.
-if test "${with_gnu_ld+set}" = set; then
-  withval="$with_gnu_ld"
-  test "$withval" = no || with_gnu_ld=yes
-else
-  with_gnu_ld=no
-fi;
-# Prepare PATH_SEPARATOR.
-# The user is always right.
-if test "${PATH_SEPARATOR+set}" != set; then
-  echo "#! /bin/sh" >conf$$.sh
-  echo  "exit 0"   >>conf$$.sh
-  chmod +x conf$$.sh
-  if (PATH="/nonexistent;."; conf$$.sh) >/dev/null 2>&1; then
-    PATH_SEPARATOR=';'
+  # If Canadian cross, then don't pick up tools from the build directory.
+  # Used only in GLIBCXX_EXPORT_INCLUDES.
+  if test -n "$with_cross_host" &&
+     test x"$build_alias" != x"$with_cross_host" &&
+     test x"$build" != x"$target";
+  then
+    CANADIAN=yes
   else
-    PATH_SEPARATOR=:
+    CANADIAN=no
   fi
-  rm -f conf$$.sh
-fi
-ac_prog=ld
-if test "$GCC" = yes; then
-  # Check if gcc -print-prog-name=ld gives a path.
-  echo "$as_me:$LINENO: checking for ld used by GCC" >&5
-echo $ECHO_N "checking for ld used by GCC... $ECHO_C" >&6
-  case $host in
-  *-*-mingw*)
-    # gcc leaves a trailing carriage return which upsets mingw
-    ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
-  *)
-    ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
-  esac
-  case $ac_prog in
-    # Accept absolute paths.
-    [\\/]* | [A-Za-z]:[\\/]*)
-      re_direlt='/[^/][^/]*/\.\./'
-      # Canonicalize the path of ld
-      ac_prog=`echo $ac_prog| sed 's%\\\\%/%g'`
-      while echo $ac_prog | grep "$re_direlt" > /dev/null 2>&1; do
-       ac_prog=`echo $ac_prog| sed "s%$re_direlt%/%"`
-      done
-      test -z "$LD" && LD="$ac_prog"
-      ;;
-  "")
-    # If it fails, then pretend we aren't using GCC.
-    ac_prog=ld
-    ;;
-  *)
-    # If it is relative, then search for the first ld in PATH.
-    with_gnu_ld=unknown
-    ;;
-  esac
-elif test "$with_gnu_ld" = yes; then
-  echo "$as_me:$LINENO: checking for GNU ld" >&5
-echo $ECHO_N "checking for GNU ld... $ECHO_C" >&6
-else
-  echo "$as_me:$LINENO: checking for non-GNU ld" >&5
-echo $ECHO_N "checking for non-GNU ld... $ECHO_C" >&6
-fi
-if test "${acl_cv_path_LD+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test -z "$LD"; then
-  IFS="${IFS=  }"; ac_save_ifs="$IFS"; IFS="${IFS}${PATH_SEPARATOR-:}"
-  for ac_dir in $PATH; do
-    test -z "$ac_dir" && ac_dir=.
-    if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
-      acl_cv_path_LD="$ac_dir/$ac_prog"
-      # Check to see if the program is GNU ld.  I'd rather use --version,
-      # but apparently some GNU ld's only accept -v.
-      # Break only if it was the GNU/non-GNU ld that we prefer.
-      if "$acl_cv_path_LD" -v 2>&1 < /dev/null | egrep '(GNU|with BFD)' > /dev/null; then
-       test "$with_gnu_ld" != no && break
-      else
-       test "$with_gnu_ld" != yes && break
-      fi
-    fi
-  done
-  IFS="$ac_save_ifs"
-else
-  acl_cv_path_LD="$LD" # Let the user override the test with a path.
-fi
-fi
 
-LD="$acl_cv_path_LD"
-if test -n "$LD"; then
-  echo "$as_me:$LINENO: result: $LD" >&5
-echo "${ECHO_T}$LD" >&6
-else
-  echo "$as_me:$LINENO: result: no" >&5
-echo "${ECHO_T}no" >&6
-fi
-test -z "$LD" && { { echo "$as_me:$LINENO: error: no acceptable ld found in \$PATH" >&5
-echo "$as_me: error: no acceptable ld found in \$PATH" >&2;}
-   { (exit 1); exit 1; }; }
-echo "$as_me:$LINENO: checking if the linker ($LD) is GNU ld" >&5
-echo $ECHO_N "checking if the linker ($LD) is GNU ld... $ECHO_C" >&6
-if test "${acl_cv_prog_gnu_ld+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  # I'd rather use --version here, but apparently some GNU ld's only accept -v.
-if $LD -v 2>&1 </dev/null | egrep '(GNU|with BFD)' 1>&5; then
-  acl_cv_prog_gnu_ld=yes
-else
-  acl_cv_prog_gnu_ld=no
-fi
-fi
-echo "$as_me:$LINENO: result: $acl_cv_prog_gnu_ld" >&5
-echo "${ECHO_T}$acl_cv_prog_gnu_ld" >&6
-with_gnu_ld=$acl_cv_prog_gnu_ld
+  # Construct crosses by hand, eliminating bits that need ld...
+  # GLIBCXX_CHECK_MATH_SUPPORT
 
+  # First, test for "known" system libraries.  We may be using newlib even
+  # on a hosted environment.
+  if test "x${with_newlib}" = "xyes"; then
+    os_include_dir="os/newlib"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
 
 
-                                                echo "$as_me:$LINENO: checking for shared library run path origin" >&5
-echo $ECHO_N "checking for shared library run path origin... $ECHO_C" >&6
-if test "${acl_cv_rpath+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    # GLIBCXX_CHECK_STDLIB_SUPPORT
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRTOF 1
+_ACEOF
 
-    CC="$CC" GCC="$GCC" LDFLAGS="$LDFLAGS" LD="$LD" with_gnu_ld="$with_gnu_ld" \
-    ${CONFIG_SHELL-/bin/sh} "$ac_aux_dir/config.rpath" "$host" > conftest.sh
-    . ./conftest.sh
-    rm -f ./conftest.sh
-    acl_cv_rpath=done
 
-fi
-echo "$as_me:$LINENO: result: $acl_cv_rpath" >&5
-echo "${ECHO_T}$acl_cv_rpath" >&6
-  wl="$acl_cv_wl"
-  libext="$acl_cv_libext"
-  shlibext="$acl_cv_shlibext"
-  hardcode_libdir_flag_spec="$acl_cv_hardcode_libdir_flag_spec"
-  hardcode_libdir_separator="$acl_cv_hardcode_libdir_separator"
-  hardcode_direct="$acl_cv_hardcode_direct"
-  hardcode_minus_L="$acl_cv_hardcode_minus_L"
-    # Check whether --enable-rpath or --disable-rpath was given.
-if test "${enable_rpath+set}" = set; then
-  enableval="$enable_rpath"
-  :
-else
-  enable_rpath=yes
-fi;
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
 
-    use_additional=yes
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
 
-    eval additional_includedir=\"$includedir\"
-    eval additional_libdir=\"$libdir\"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FLOORF 1
+_ACEOF
 
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODF 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
 
-# Check whether --with-libiconv-prefix or --without-libiconv-prefix was given.
-if test "${with_libiconv_prefix+set}" = set; then
-  withval="$with_libiconv_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
 
-    if test "X$withval" = "Xno"; then
-      use_additional=no
-    else
-      if test "X$withval" = "X"; then
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
 
-          eval additional_includedir=\"$includedir\"
-          eval additional_libdir=\"$libdir\"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
 
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWF 1
+_ACEOF
 
-      else
-        additional_includedir="$withval/include"
-        additional_libdir="$withval/lib"
-      fi
-    fi
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
+_ACEOF
 
-fi;
-      LIBICONV=
-  LTLIBICONV=
-  INCICONV=
-  rpathdirs=
-  ltrpathdirs=
-  names_already_handled=
-  names_next_round='iconv '
-  while test -n "$names_next_round"; do
-    names_this_round="$names_next_round"
-    names_next_round=
-    for name in $names_this_round; do
-      already_handled=
-      for n in $names_already_handled; do
-        if test "$n" = "$name"; then
-          already_handled=yes
-          break
-        fi
-      done
-      if test -z "$already_handled"; then
-        names_already_handled="$names_already_handled $name"
-                        uppername=`echo "$name" | sed -e 'y|abcdefghijklmnopqrstuvwxyz./-|ABCDEFGHIJKLMNOPQRSTUVWXYZ___|'`
-        eval value=\"\$HAVE_LIB$uppername\"
-        if test -n "$value"; then
-          if test "$value" = yes; then
-            eval value=\"\$LIB$uppername\"
-            test -z "$value" || LIBICONV="${LIBICONV}${LIBICONV:+ }$value"
-            eval value=\"\$LTLIB$uppername\"
-            test -z "$value" || LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$value"
-          else
-                                    :
-          fi
-        else
-                              found_dir=
-          found_la=
-          found_so=
-          found_a=
-          if test $use_additional = yes; then
-            if test -n "$shlibext" && test -f "$additional_libdir/lib$name.$shlibext"; then
-              found_dir="$additional_libdir"
-              found_so="$additional_libdir/lib$name.$shlibext"
-              if test -f "$additional_libdir/lib$name.la"; then
-                found_la="$additional_libdir/lib$name.la"
-              fi
-            else
-              if test -f "$additional_libdir/lib$name.$libext"; then
-                found_dir="$additional_libdir"
-                found_a="$additional_libdir/lib$name.$libext"
-                if test -f "$additional_libdir/lib$name.la"; then
-                  found_la="$additional_libdir/lib$name.la"
-                fi
-              fi
-            fi
-          fi
-          if test "X$found_dir" = "X"; then
-            for x in $LDFLAGS $LTLIBICONV; do
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
 
-              case "$x" in
-                -L*)
-                  dir=`echo "X$x" | sed -e 's/^X-L//'`
-                  if test -n "$shlibext" && test -f "$dir/lib$name.$shlibext"; then
-                    found_dir="$dir"
-                    found_so="$dir/lib$name.$shlibext"
-                    if test -f "$dir/lib$name.la"; then
-                      found_la="$dir/lib$name.la"
-                    fi
-                  else
-                    if test -f "$dir/lib$name.$libext"; then
-                      found_dir="$dir"
-                      found_a="$dir/lib$name.$libext"
-                      if test -f "$dir/lib$name.la"; then
-                        found_la="$dir/lib$name.la"
-                      fi
-                    fi
-                  fi
-                  ;;
-              esac
-              if test "X$found_dir" != "X"; then
-                break
-              fi
-            done
-          fi
-          if test "X$found_dir" != "X"; then
-                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$found_dir -l$name"
-            if test "X$found_so" != "X"; then
-                                                        if test "$enable_rpath" = no || test "X$found_dir" = "X/usr/lib"; then
-                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
-              else
-                                                                                haveit=
-                for x in $ltrpathdirs; do
-                  if test "X$x" = "X$found_dir"; then
-                    haveit=yes
-                    break
-                  fi
-                done
-                if test -z "$haveit"; then
-                  ltrpathdirs="$ltrpathdirs $found_dir"
-                fi
-                                if test "$hardcode_direct" = yes; then
-                                                      LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
-                else
-                  if test -n "$hardcode_libdir_flag_spec" && test "$hardcode_minus_L" = no; then
-                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
-                                                            haveit=
-                    for x in $rpathdirs; do
-                      if test "X$x" = "X$found_dir"; then
-                        haveit=yes
-                        break
-                      fi
-                    done
-                    if test -z "$haveit"; then
-                      rpathdirs="$rpathdirs $found_dir"
-                    fi
-                  else
-                                                                                haveit=
-                    for x in $LDFLAGS $LIBICONV; do
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
 
-                      if test "X$x" = "X-L$found_dir"; then
-                        haveit=yes
-                        break
-                      fi
-                    done
-                    if test -z "$haveit"; then
-                      LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir"
-                    fi
-                    if test "$hardcode_minus_L" != no; then
-                                                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$found_so"
-                    else
-                                                                                                                                                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
-                    fi
-                  fi
-                fi
-              fi
-            else
-              if test "X$found_a" != "X"; then
-                                LIBICONV="${LIBICONV}${LIBICONV:+ }$found_a"
-              else
-                                                LIBICONV="${LIBICONV}${LIBICONV:+ }-L$found_dir -l$name"
-              fi
-            fi
-                        additional_includedir=
-            case "$found_dir" in
-              */lib | */lib/)
-                basedir=`echo "X$found_dir" | sed -e 's,^X,,' -e 's,/lib/*$,,'`
-                additional_includedir="$basedir/include"
-                ;;
-            esac
-            if test "X$additional_includedir" != "X"; then
-                                                                                                                if test "X$additional_includedir" != "X/usr/include"; then
-                haveit=
-                if test "X$additional_includedir" = "X/usr/local/include"; then
-                  if test -n "$GCC"; then
-                    case $host_os in
-                      linux*) haveit=yes;;
-                    esac
-                  fi
-                fi
-                if test -z "$haveit"; then
-                  for x in $CPPFLAGS $INCICONV; do
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ICONV 1
+_ACEOF
 
-                    if test "X$x" = "X-I$additional_includedir"; then
-                      haveit=yes
-                      break
-                    fi
-                  done
-                  if test -z "$haveit"; then
-                    if test -d "$additional_includedir"; then
-                                            INCICONV="${INCICONV}${INCICONV:+ }-I$additional_includedir"
-                    fi
-                  fi
-                fi
-              fi
-            fi
-                        if test -n "$found_la"; then
-                                                        save_libdir="$libdir"
-              case "$found_la" in
-                */* | *\\*) . "$found_la" ;;
-                *) . "./$found_la" ;;
-              esac
-              libdir="$save_libdir"
-                            for dep in $dependency_libs; do
-                case "$dep" in
-                  -L*)
-                    additional_libdir=`echo "X$dep" | sed -e 's/^X-L//'`
-                                                                                                                                                                if test "X$additional_libdir" != "X/usr/lib"; then
-                      haveit=
-                      if test "X$additional_libdir" = "X/usr/local/lib"; then
-                        if test -n "$GCC"; then
-                          case $host_os in
-                            linux*) haveit=yes;;
-                          esac
-                        fi
-                      fi
-                      if test -z "$haveit"; then
-                        haveit=
-                        for x in $LDFLAGS $LIBICONV; do
+  else
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+# Base decisions on target environment.
+case "${host}" in
+  arm*-*-symbianelf*)
+    # This is a freestanding configuration; there is nothing to do here.
+    ;;
 
-                          if test "X$x" = "X-L$additional_libdir"; then
-                            haveit=yes
-                            break
-                          fi
-                        done
-                        if test -z "$haveit"; then
-                          if test -d "$additional_libdir"; then
-                                                        LIBICONV="${LIBICONV}${LIBICONV:+ }-L$additional_libdir"
-                          fi
-                        fi
-                        haveit=
-                        for x in $LDFLAGS $LTLIBICONV; do
+  mips*-sde-elf*)
+    # These definitions are for the SDE C library rather than newlib.
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
 
-                          if test "X$x" = "X-L$additional_libdir"; then
-                            haveit=yes
-                            break
-                          fi
-                        done
-                        if test -z "$haveit"; then
-                          if test -d "$additional_libdir"; then
-                                                        LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-L$additional_libdir"
-                          fi
-                        fi
-                      fi
-                    fi
-                    ;;
-                  -R*)
-                    dir=`echo "X$dep" | sed -e 's/^X-R//'`
-                    if test "$enable_rpath" != no; then
-                                                                  haveit=
-                      for x in $rpathdirs; do
-                        if test "X$x" = "X$dir"; then
-                          haveit=yes
-                          break
-                        fi
-                      done
-                      if test -z "$haveit"; then
-                        rpathdirs="$rpathdirs $dir"
-                      fi
-                                                                  haveit=
-                      for x in $ltrpathdirs; do
-                        if test "X$x" = "X$dir"; then
-                          haveit=yes
-                          break
-                        fi
-                      done
-                      if test -z "$haveit"; then
-                        ltrpathdirs="$ltrpathdirs $dir"
-                      fi
-                    fi
-                    ;;
-                  -l*)
-                                        names_next_round="$names_next_round "`echo "X$dep" | sed -e 's/^X-l//'`
-                    ;;
-                  *.la)
-                                                                                names_next_round="$names_next_round "`echo "X$dep" | sed -e 's,^X.*/,,' -e 's,^lib,,' -e 's,\.la$,,'`
-                    ;;
-                  *)
-                                        LIBICONV="${LIBICONV}${LIBICONV:+ }$dep"
-                    LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }$dep"
-                    ;;
-                esac
-              done
-            fi
-          else
-                                                            LIBICONV="${LIBICONV}${LIBICONV:+ }-l$name"
-            LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-l$name"
-          fi
-        fi
-      fi
-    done
-  done
-  if test "X$rpathdirs" != "X"; then
-    if test -n "$hardcode_libdir_separator"; then
-                        alldirs=
-      for found_dir in $rpathdirs; do
-        alldirs="${alldirs}${alldirs:+$hardcode_libdir_separator}$found_dir"
-      done
-            acl_save_libdir="$libdir"
-      libdir="$alldirs"
-      eval flag=\"$hardcode_libdir_flag_spec\"
-      libdir="$acl_save_libdir"
-      LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
-    else
-            for found_dir in $rpathdirs; do
-        acl_save_libdir="$libdir"
-        libdir="$found_dir"
-        eval flag=\"$hardcode_libdir_flag_spec\"
-        libdir="$acl_save_libdir"
-        LIBICONV="${LIBICONV}${LIBICONV:+ }$flag"
-      done
-    fi
+  # All these tests are for C++; save the language and the compiler flags.
+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
+  # found in GLIBCXX_CONFIGURE.
+
+
+  ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+
+  # Check for maintainer-mode bits.
+  if test x"$USE_MAINTAINER_MODE" = xno; then
+    WERROR=''
+  else
+    WERROR='-Werror'
   fi
-  if test "X$ltrpathdirs" != "X"; then
-            for found_dir in $ltrpathdirs; do
-      LTLIBICONV="${LTLIBICONV}${LTLIBICONV:+ }-R$found_dir"
-    done
+
+  # Check for -ffunction-sections -fdata-sections
+  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
+echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
+  CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+int foo; void bar() { };
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_fdsections=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_fdsections=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+  if test "$ac_test_CXXFLAGS" = set; then
+    CXXFLAGS="$ac_save_CXXFLAGS"
+  else
+    # this is the suspicious part
+    CXXFLAGS=''
+  fi
+  if test x"$ac_fdsections" = x"yes"; then
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
   fi
+  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
+echo "${ECHO_T}$ac_fdsections" >&6
 
+  ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
 
 
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 
-          am_save_CPPFLAGS="$CPPFLAGS"
 
-  for element in $INCICONV; do
-    haveit=
-    for x in $CPPFLAGS; do
 
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
 
-      if test "X$x" = "X$element"; then
-        haveit=yes
-        break
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+ int one(void) { return 1; }
+     int two(void) { return 2; }
+
+int
+main ()
+{
+ two();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_gcsections=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_gcsections=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
       fi
-    done
-    if test -z "$haveit"; then
-      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+      rm -f conftest.c conftest.o conftest
     fi
-  done
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
+
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
+
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
+int
+main ()
+{
+sin ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
+fi
+
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
+
+
+
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ isinf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isinf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isinf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+
+for ac_func in isinf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isinf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isinf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+
+for ac_func in _isinf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+
+for ac_func in isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+
+for ac_func in _isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ finite(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_finite_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_finite_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+
+for ac_func in finite
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _finite(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__finite_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__finite_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+
+for ac_func in _finite
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ sincos(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_sincos_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_sincos_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+
+for ac_func in sincos
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincos(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sincos_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__sincos_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+
+for ac_func in _sincos
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ fpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+
+for ac_func in fpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _fpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__fpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__fpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+
+for ac_func in _fpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ qfpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_qfpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_qfpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+
+for ac_func in qfpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _qfpclass(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__qfpclass_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__qfpclass_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+
+for ac_func in _qfpclass
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ hypot(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_hypot_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_hypot_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+
+for ac_func in hypot
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _hypot(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__hypot_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__hypot_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+
+for ac_func in _hypot
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+    ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_float_trig_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_float_trig_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
+
+
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+    echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__float_trig_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__float_trig_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
+
+
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+    ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+    cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ceilf (0); floorf (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_float_round_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_float_round_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+    ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+
+
+for ac_func in ceilf floorf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+    echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+_ceilf (0); _floorf (0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__float_round_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__float_round_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+fi
+
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
+
+
+for ac_func in _ceilf _floorf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ expf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_expf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_expf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+
+for ac_func in expf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _expf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__expf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__expf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+
+for ac_func in _expf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ isnanf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isnanf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isnanf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+
+for ac_func in isnanf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isnanf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnanf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnanf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+
+for ac_func in _isnanf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ isinff(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_isinff_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_isinff_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+
+for ac_func in isinff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isinff(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinff_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isinff_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+
+for ac_func in _isinff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ atan2f(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_atan2f_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_atan2f_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+
+for ac_func in atan2f
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _atan2f(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__atan2f_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__atan2f_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+
+for ac_func in _atan2f
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ fabsf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fabsf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fabsf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+
+for ac_func in fabsf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _fabsf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__fabsf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__fabsf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+
+for ac_func in _fabsf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ fmodf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fmodf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fmodf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+
+for ac_func in fmodf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _fmodf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__fmodf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__fmodf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+
+for ac_func in _fmodf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ frexpf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_frexpf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_frexpf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+
+for ac_func in frexpf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _frexpf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__frexpf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__frexpf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+
+for ac_func in _frexpf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ hypotf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_hypotf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_hypotf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+
+for ac_func in hypotf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _hypotf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__hypotf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__hypotf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+
+for ac_func in _hypotf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ ldexpf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_ldexpf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_ldexpf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+
+for ac_func in ldexpf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _ldexpf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__ldexpf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__ldexpf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+
+for ac_func in _ldexpf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ logf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_logf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_logf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+
+for ac_func in logf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _logf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__logf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__logf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+
+for ac_func in _logf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ log10f(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_log10f_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_log10f_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
+
+for ac_func in log10f
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _log10f(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__log10f_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__log10f_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
+
+for ac_func in _log10f
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ modff(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_modff_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_modff_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+
+for ac_func in modff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _modff(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__modff_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__modff_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+
+for ac_func in _modff
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for modf declaration" >&5
+echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modf_use+set} != xset; then
+    if test "${glibcxx_cv_func_modf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ modf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_modf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_modf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
+
+  if test x$glibcxx_cv_func_modf_use = x"yes"; then
+
+for ac_func in modf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _modf declaration" >&5
+echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modf_use+set} != xset; then
+    if test "${glibcxx_cv_func__modf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _modf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__modf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__modf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
+
+    if test x$glibcxx_cv_func__modf_use = x"yes"; then
+
+for ac_func in _modf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ powf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_powf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_powf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
+
+for ac_func in powf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _powf(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__powf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__powf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
+
+for ac_func in _powf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ sqrtf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_sqrtf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_sqrtf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+
+for ac_func in sqrtf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
 
+  else
 
-  echo "$as_me:$LINENO: checking for iconv" >&5
-echo $ECHO_N "checking for iconv... $ECHO_C" >&6
-if test "${am_cv_func_iconv+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-    am_cv_func_iconv="no, consider installing GNU libiconv"
-    am_cv_lib_iconv=no
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
-#include <iconv.h>
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-iconv_t cd = iconv_open("","");
-       iconv(cd,NULL,NULL,NULL,NULL);
-       iconv_close(cd);
+ _sqrtf(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  am_cv_func_iconv=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
+glibcxx_cv_func__sqrtf_use=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$am_cv_func_iconv" != yes; then
-      am_save_LIBS="$LIBS"
-      LIBS="$LIBS $LIBICONV"
-      if test x$gcc_no_link = xyes; then
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+
+for ac_func in _sqrtf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -42626,14 +51212,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
-#include <iconv.h>
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-iconv_t cd = iconv_open("","");
-         iconv(cd,NULL,NULL,NULL,NULL);
-         iconv_close(cd);
+return f != $ac_func;
   ;
   return 0;
 }
@@ -42660,71 +51279,60 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  am_cv_lib_iconv=yes
-        am_cv_func_iconv=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-      LIBS="$am_save_LIBS"
-    fi
-
 fi
-echo "$as_me:$LINENO: result: $am_cv_func_iconv" >&5
-echo "${ECHO_T}$am_cv_func_iconv" >&6
-  if test "$am_cv_func_iconv" = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_ICONV 1
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  fi
-  if test "$am_cv_lib_iconv" = yes; then
-    echo "$as_me:$LINENO: checking how to link with libiconv" >&5
-echo $ECHO_N "checking how to link with libiconv... $ECHO_C" >&6
-    echo "$as_me:$LINENO: result: $LIBICONV" >&5
-echo "${ECHO_T}$LIBICONV" >&6
-  else
-            CPPFLAGS="$am_save_CPPFLAGS"
-    LIBICONV=
-    LTLIBICONV=
+fi
+done
+
+    fi
   fi
 
 
 
-  if test "$am_cv_func_iconv" = yes; then
-    echo "$as_me:$LINENO: checking for iconv declaration" >&5
-echo $ECHO_N "checking for iconv declaration... $ECHO_C" >&6
-    if test "${am_cv_proto_iconv+set}" = set; then
+
+
+
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
       cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-#include <stdlib.h>
-#include <iconv.h>
-extern
-#ifdef __cplusplus
-"C"
-#endif
-#if defined(__STDC__) || defined(__cplusplus)
-size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
-#else
-size_t iconv();
-#endif
-
+#include <math.h>
 int
 main ()
 {
-
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -42738,7 +51346,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -42751,225 +51359,356 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  am_cv_proto_iconv_arg1=""
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-am_cv_proto_iconv_arg1="const"
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"
-fi
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-    am_cv_proto_iconv=`echo "$am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
-    echo "$as_me:$LINENO: result: ${ac_t:-
-         }$am_cv_proto_iconv" >&5
-echo "${ECHO_T}${ac_t:-
-         }$am_cv_proto_iconv" >&6
 
-cat >>confdefs.h <<_ACEOF
-#define ICONV_CONST $am_cv_proto_iconv_arg1
-_ACEOF
+fi
 
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
+for ac_func in sincosf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-
-  # This lets us hard-code the functionality we know we'll have in the cross
-  # target environment.  "Let" is a sugar-coated word placed on an especially
-  # dull and tedious hack, actually.
-  #
-  # Here's why GLIBCXX_CHECK_MATH_SUPPORT, and other autoconf macros
-  # that involve linking, can't be used:
-  #    "cannot open sim-crt0.o"
-  #    "cannot open crt0.o"
-  # etc.  All this is because there currently exists no unified, consistent
-  # way for top level CC information to be passed down to target directories:
-  # newlib includes, newlib linking info, libgloss versus newlib crt0.o, etc.
-  # When all of that is done, all of this hokey, excessive AC_DEFINE junk for
-  # crosses can be removed.
-
-  # If Canadian cross, then don't pick up tools from the build directory.
-  # Used only in GLIBCXX_EXPORT_INCLUDES.
-  if test -n "$with_cross_host" &&
-     test x"$build_alias" != x"$with_cross_host" &&
-     test x"$build" != x"$target";
-  then
-    CANADIAN=yes
-  else
-    CANADIAN=no
-  fi
-
-  # Construct crosses by hand, eliminating bits that need ld...
-  # GLIBCXX_CHECK_MATH_SUPPORT
-
-  # First, test for "known" system libraries.  We may be using newlib even
-  # on a hosted environment.
-  if test "x${with_newlib}" = "xyes"; then
-    os_include_dir="os/newlib"
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
-    # GLIBCXX_CHECK_STDLIB_SUPPORT
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOF 1
-_ACEOF
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSF 1
-_ACEOF
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINF 1
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2F 1
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANF 1
-_ACEOF
+fi
+done
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILF 1
-_ACEOF
+  else
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
-_ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
-_ACEOF
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPF 1
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSF 1
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincosf(0, 0, 0);
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sincosf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORF 1
-_ACEOF
+glibcxx_cv_func__sincosf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODF 1
-_ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
+fi
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LDEXPF 1
-_ACEOF
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
-_ACEOF
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
+for ac_func in _sincosf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
-_ACEOF
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POWF 1
-_ACEOF
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
-_ACEOF
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANF 1
-_ACEOF
+fi
+done
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHF 1
-_ACEOF
+    fi
+  fi
 
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ICONV 1
-_ACEOF
 
-  else
 
-# Base decisions on target environment.
-case "${host}" in
-  arm*-*-symbianelf*)
-    # This is a freestanding configuration; there is nothing to do here.
-    ;;
 
-  mips*-sde-elf*)
-    # These definitions are for the SDE C library rather than newlib.
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
 
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  # All these tests are for C++; save the language and the compiler flags.
-  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-  # found in GLIBCXX_CONFIGURE.
 
 
-  ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-
-  # Check for maintainer-mode bits.
-  if test x"$USE_MAINTAINER_MODE" = xno; then
-    WERROR=''
-  else
-    WERROR='-Werror'
-  fi
-
-  # Check for -ffunction-sections -fdata-sections
-  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
-  CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
-  cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-int foo; void bar() { };
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-
+ finitef(0);
   ;
   return 0;
 }
@@ -42996,104 +51735,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_fdsections=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_fdsections=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test "$ac_test_CXXFLAGS" = set; then
-    CXXFLAGS="$ac_save_CXXFLAGS"
-  else
-    # this is the suspicious part
-    CXXFLAGS=''
-  fi
-  if test x"$ac_fdsections" = x"yes"; then
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-  fi
-  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
-echo "${ECHO_T}$ac_fdsections" >&6
-
-  ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
+fi
 
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
-
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
-
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
-
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
   fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
+for ac_func in finitef
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -43104,13 +51777,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- two();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -43137,76 +51844,116 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_gcsections=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
+int
+main ()
+{
+ _finitef(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__finitef_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+glibcxx_cv_func__finitef_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+
+for ac_func in _finitef
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -43217,18 +51964,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char sin ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-sin ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -43255,58 +52031,59 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_sin=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
 fi
+done
 
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
+    fi
+  fi
 
 
 
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+
+
+
+    echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isinf(0);
+acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
   ;
   return 0;
 }
@@ -43333,30 +52110,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-for ac_func in isinf
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43463,11 +52245,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43486,14 +52266,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isinf(0);
+_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
   ;
   return 0;
 }
@@ -43520,12 +52296,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43534,16 +52310,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-for ac_func in _isinf
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43657,36 +52438,39 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isnan(0);
+ceill (0); floorl (0);
   ;
   return 0;
 }
@@ -43713,30 +52497,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
 
-for ac_func in isnan
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -43843,11 +52625,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -43866,14 +52646,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isnan(0);
+_ceill (0); _floorl (0);
   ;
   return 0;
 }
@@ -43900,12 +52676,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -43914,16 +52690,14 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
 
-for ac_func in _isnan
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44037,10 +52811,12 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44066,7 +52842,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finite(0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -44093,12 +52869,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finite_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44111,12 +52887,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in finite
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44224,10 +53000,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44253,7 +53029,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finite(0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -44280,12 +53056,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finite_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44298,12 +53074,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _finite
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44417,10 +53193,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44439,10 +53215,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- copysign(0, 0);
+ isinfl(0);
   ;
   return 0;
 }
@@ -44469,12 +53249,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44487,12 +53267,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44600,10 +53380,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44622,10 +53402,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _copysign(0, 0);
+ _isinfl(0);
   ;
   return 0;
 }
@@ -44652,12 +53436,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44670,12 +53454,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44789,10 +53573,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44814,7 +53598,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincos(0, 0, 0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -44841,12 +53625,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -44859,12 +53643,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in sincos
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -44972,10 +53756,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -44997,7 +53781,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincos(0, 0, 0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -45024,12 +53808,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45042,12 +53826,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45161,10 +53945,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45190,7 +53974,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fpclass(0);
+ expl(0);
   ;
   return 0;
 }
@@ -45217,12 +54001,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45235,12 +54019,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in fpclass
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45348,10 +54132,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45377,7 +54161,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fpclass(0);
+ _expl(0);
   ;
   return 0;
 }
@@ -45404,12 +54188,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45422,12 +54206,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _fpclass
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45541,10 +54325,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45570,7 +54354,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- qfpclass(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -45597,12 +54381,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45615,12 +54399,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in qfpclass
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45728,10 +54512,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45757,7 +54541,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _qfpclass(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -45784,12 +54568,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45802,12 +54586,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in _qfpclass
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -45921,10 +54705,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -45946,7 +54730,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypot(0, 0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -45973,12 +54757,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -45991,12 +54775,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46104,10 +54888,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46129,7 +54913,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypot(0, 0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -46156,12 +54940,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46174,12 +54958,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46293,21 +55077,22 @@ done
 
 
 
-    echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -46317,7 +55102,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -46344,35 +55129,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46479,9 +55259,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46503,7 +55285,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -46530,12 +55312,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46544,21 +55326,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46672,29 +55449,22 @@ done
 
 
 
-
-
-
-
-
-
-
-
-    echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -46704,7 +55474,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-ceilf (0); floorf (0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -46731,28 +55501,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -46859,9 +55631,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -46883,7 +55657,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_ceilf (0); _floorf (0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -46910,12 +55684,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -46924,14 +55698,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _ceilf _floorf
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47045,12 +55821,10 @@ done
 
 
 
-
-
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47069,14 +55843,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- expf(0);
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -47103,12 +55873,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47121,12 +55891,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47234,10 +56004,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47256,14 +56026,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _expf(0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -47290,12 +56056,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47308,12 +56074,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47427,10 +56193,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47456,7 +56222,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnanf(0);
+ logl(0);
   ;
   return 0;
 }
@@ -47483,12 +56249,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47501,12 +56267,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in isnanf
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47614,10 +56380,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47643,7 +56409,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnanf(0);
+ _logl(0);
   ;
   return 0;
 }
@@ -47670,12 +56436,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47688,12 +56454,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _isnanf
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47807,10 +56573,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -47836,7 +56602,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinff(0);
+ log10l(0);
   ;
   return 0;
 }
@@ -47863,12 +56629,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinff_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -47881,12 +56647,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in isinff
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -47994,10 +56760,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48023,7 +56789,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinff(0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -48050,12 +56816,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinff_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48068,12 +56834,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _isinff
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -48187,10 +56953,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48212,7 +56978,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2f(0, 0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -48239,12 +57005,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48257,12 +57023,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -48370,10 +57136,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48395,7 +57161,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2f(0, 0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -48422,12 +57188,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48440,12 +57206,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -48559,10 +57325,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48581,14 +57347,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fabsf(0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -48615,12 +57377,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48633,12 +57395,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -48746,10 +57508,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48768,14 +57530,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fabsf(0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -48802,12 +57560,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -48820,12 +57578,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _fabsf
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -48939,10 +57697,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -48961,10 +57719,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- fmodf(0, 0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -48991,12 +57753,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49009,12 +57771,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in fmodf
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -49122,10 +57884,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -49144,10 +57906,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _fmodf(0, 0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -49174,12 +57940,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49192,12 +57958,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _fmodf
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -49311,10 +58077,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -49336,7 +58102,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpf(0, 0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -49363,12 +58129,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49381,12 +58147,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in frexpf
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -49494,10 +58260,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -49519,7 +58285,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpf(0, 0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -49546,12 +58312,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpf_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49564,12 +58330,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in _frexpf
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -49683,10 +58449,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -49705,10 +58471,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypotf(0, 0);
+ finitel(0);
   ;
   return 0;
 }
@@ -49735,12 +58505,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49753,12 +58523,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -49866,10 +58636,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -49888,10 +58658,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypotf(0, 0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -49918,12 +58692,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -49936,12 +58710,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50054,11 +58828,19 @@ done
 
 
 
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -50076,11 +58858,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- ldexpf(0, 0);
+ strtold(0, 0);
   ;
   return 0;
 }
@@ -50107,12 +58889,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_strtold_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -50125,12 +58907,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
-
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50236,12 +59017,16 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+
+
+
+
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -50259,11 +59044,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- _ldexpf(0, 0);
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -50290,12 +59075,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -50308,12 +59093,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
-
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50419,18 +59203,139 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
 
 
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
+
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
+
+    ;;
+
+  *-darwin*)
+    # Darwin versions vary, but the linker should work in a cross environment,
+    # so we just check for all the features here.
+    # Check for available headers.
+
+    # Don't call GLIBCXX_CHECK_LINKER_FEATURES, Darwin doesn't have a GNU ld
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char sin ();
+int
+main ()
+{
+sin ();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_cv_lib_m_sin=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_cv_lib_m_sin=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
+fi
+
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
+
+
+
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -50456,7 +59361,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logf(0);
+ isinf(0);
   ;
   return 0;
 }
@@ -50483,12 +59388,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -50501,12 +59406,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50614,10 +59519,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -50643,7 +59548,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logf(0);
+ _isinf(0);
   ;
   return 0;
 }
@@ -50670,12 +59575,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -50688,12 +59593,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50807,10 +59712,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -50836,7 +59741,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- log10f(0);
+ isnan(0);
   ;
   return 0;
 }
@@ -50863,12 +59768,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -50881,12 +59786,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
 
-for ac_func in log10f
+for ac_func in isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -50994,10 +59899,203 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isnan(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnan_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnan_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+
+for ac_func in _isnan
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -51023,196 +60121,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _log10f(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func__log10f_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
-
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
-
-for ac_func in _log10f
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-    fi
-  fi
-
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- modff(0, 0);
+ finite(0);
   ;
   return 0;
 }
@@ -51239,12 +60148,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -51257,12 +60166,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51370,10 +60279,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -51392,10 +60301,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _modff(0, 0);
+ _finite(0);
   ;
   return 0;
 }
@@ -51422,12 +60335,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -51440,12 +60353,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51559,10 +60472,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modf declaration" >&5
-echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modf_use+set} != xset; then
-    if test "${glibcxx_cv_func_modf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -51584,7 +60497,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modf(0, 0);
+ sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -51611,12 +60524,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modf_use=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modf_use=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -51629,12 +60542,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
-  if test x$glibcxx_cv_func_modf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in modf
+for ac_func in sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51742,10 +60655,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modf declaration" >&5
-echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modf_use+set} != xset; then
-    if test "${glibcxx_cv_func__modf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -51767,7 +60680,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modf(0, 0);
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -51794,12 +60707,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modf_use=yes
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modf_use=no
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -51812,12 +60725,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
-    if test x$glibcxx_cv_func__modf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _modf
+for ac_func in _sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -51931,10 +60844,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -51953,10 +60866,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powf(0, 0);
+ fpclass(0);
   ;
   return 0;
 }
@@ -51983,12 +60900,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52001,12 +60918,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-for ac_func in powf
+for ac_func in fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52114,10 +61031,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52136,10 +61053,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powf(0, 0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -52166,12 +61087,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52184,12 +61105,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52303,10 +61224,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52332,7 +61253,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sqrtf(0);
+ qfpclass(0);
   ;
   return 0;
 }
@@ -52359,12 +61280,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
+  glibcxx_cv_func_qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtf_use=no
+glibcxx_cv_func_qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52377,12 +61298,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
 
-for ac_func in sqrtf
+for ac_func in qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52490,10 +61411,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52519,7 +61440,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtf(0);
+ _qfpclass(0);
   ;
   return 0;
 }
@@ -52546,12 +61467,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func__qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func__qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52564,12 +61485,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
 
-for ac_func in _sqrtf
+for ac_func in _qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -52683,193 +61604,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- sincosf(0, 0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_sincosf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
-
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
-
-for ac_func in sincosf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -52891,7 +61629,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ hypot(0, 0);
   ;
   return 0;
 }
@@ -52918,12 +61656,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func_hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func_hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -52936,12 +61674,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53047,18 +61785,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -53077,14 +61809,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- finitef(0);
+ _hypot(0, 0);
   ;
   return 0;
 }
@@ -53111,12 +61839,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func__hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func__hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -53129,12 +61857,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in _hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53240,38 +61968,39 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _finitef(0);
+acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
   ;
   return 0;
 }
@@ -53298,30 +62027,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func_float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func_float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _finitef
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53427,29 +62161,22 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-    echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  else
+    echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -53459,7 +62186,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
+_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
   ;
   return 0;
 }
@@ -53486,15 +62213,15 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -53502,9 +62229,9 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
 
 
@@ -53514,7 +62241,7 @@ echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
 
 
 
-for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
+for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53620,22 +62347,37 @@ _ACEOF
 fi
 done
 
-  else
-    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+    fi
+  fi
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -53645,7 +62387,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
+ceilf (0); floorf (0);
   ;
   return 0;
 }
@@ -53672,15 +62414,15 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func_float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func_float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -53688,19 +62430,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
-
-
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
 
 
-for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
+for ac_func in ceilf floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -53806,37 +62541,22 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-    echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+  else
+    echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -53846,7 +62566,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-ceill (0); floorl (0);
+_ceilf (0); _floorf (0);
   ;
   return 0;
 }
@@ -53873,15 +62593,15 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
@@ -53889,12 +62609,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
 
-for ac_func in ceill floorl
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54000,10 +62720,20 @@ _ACEOF
 fi
 done
 
-  else
-    echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+    fi
+  fi
+
+
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54022,10 +62752,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-_ceill (0); _floorl (0);
+ expf(0);
   ;
   return 0;
 }
@@ -54052,12 +62786,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func_expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func_expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54066,14 +62800,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
 
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
 
-for ac_func in _ceill _floorl
+for ac_func in expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54179,20 +62915,205 @@ _ACEOF
 fi
 done
 
-    fi
+  else
+
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _expf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__expf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__expf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
+for ac_func in _expf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54218,7 +63139,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnanl(0);
+ isnanf(0);
   ;
   return 0;
 }
@@ -54245,12 +63166,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func_isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func_isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54263,12 +63184,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54376,10 +63297,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54405,7 +63326,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnanl(0);
+ _isnanf(0);
   ;
   return 0;
 }
@@ -54432,12 +63353,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func__isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func__isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54450,12 +63371,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in _isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54569,10 +63490,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54598,7 +63519,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinfl(0);
+ isinff(0);
   ;
   return 0;
 }
@@ -54625,12 +63546,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func_isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func_isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54643,12 +63564,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54756,10 +63677,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54785,7 +63706,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinfl(0);
+ _isinff(0);
   ;
   return 0;
 }
@@ -54812,12 +63733,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -54830,12 +63751,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in _isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -54949,10 +63870,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -54974,7 +63895,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ atan2f(0, 0);
   ;
   return 0;
 }
@@ -55001,12 +63922,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55019,12 +63940,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55132,10 +64053,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55157,7 +64078,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -55184,12 +64105,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55202,12 +64123,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55321,10 +64242,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55343,10 +64264,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- atan2l(0, 0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -55373,12 +64298,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55391,12 +64316,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55504,10 +64429,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55526,10 +64451,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _atan2l(0, 0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -55556,12 +64485,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55574,12 +64503,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55693,10 +64622,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55715,14 +64644,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- expl(0);
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -55749,12 +64674,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55767,12 +64692,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -55880,10 +64805,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -55902,14 +64827,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _expl(0);
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -55936,12 +64857,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -55954,12 +64875,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56073,10 +64994,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56095,14 +65016,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fabsl(0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -56129,12 +65046,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56147,12 +65064,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56260,10 +65177,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56282,14 +65199,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fabsl(0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -56316,12 +65229,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56334,12 +65247,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56453,10 +65366,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56478,7 +65391,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fmodl(0, 0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -56505,12 +65418,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56523,12 +65436,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56636,10 +65549,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56661,7 +65574,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fmodl(0, 0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -56688,12 +65601,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56706,12 +65619,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -56825,10 +65738,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -56850,7 +65763,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpl(0, 0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -56877,12 +65790,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -56895,12 +65808,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57008,10 +65921,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57033,7 +65946,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpl(0, 0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -57060,12 +65973,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57078,12 +65991,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57197,10 +66110,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57219,10 +66132,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypotl(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -57249,12 +66166,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57267,12 +66184,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57380,10 +66297,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57402,10 +66319,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypotl(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -57432,12 +66353,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57450,12 +66371,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57569,10 +66490,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57591,10 +66512,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- ldexpl(0, 0);
+ log10f(0);
   ;
   return 0;
 }
@@ -57621,12 +66546,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57639,12 +66564,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57752,10 +66677,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57774,10 +66699,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _ldexpl(0, 0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -57804,12 +66733,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -57822,12 +66751,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -57941,10 +66870,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -57963,14 +66892,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- logl(0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -57997,12 +66922,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58015,12 +66940,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58128,10 +67053,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58150,14 +67075,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _logl(0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -58184,12 +67105,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58202,12 +67123,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _logl
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58321,10 +67242,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modf declaration" >&5
+echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modf_use+set} != xset; then
+    if test "${glibcxx_cv_func_modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58343,14 +67264,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- log10l(0);
+ modf(0, 0);
   ;
   return 0;
 }
@@ -58377,12 +67294,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func_modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func_modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58395,12 +67312,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
+  if test x$glibcxx_cv_func_modf_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58508,10 +67425,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modf declaration" >&5
+echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modf_use+set} != xset; then
+    if test "${glibcxx_cv_func__modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58530,14 +67447,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _log10l(0);
+ _modf(0, 0);
   ;
   return 0;
 }
@@ -58564,12 +67477,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
+  glibcxx_cv_func__modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10l_use=no
+glibcxx_cv_func__modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58582,12 +67495,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
 
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
+    if test x$glibcxx_cv_func__modf_use = x"yes"; then
 
-for ac_func in _log10l
+for ac_func in _modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58701,10 +67614,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58726,7 +67639,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modfl(0, 0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -58753,12 +67666,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58771,12 +67684,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -58884,10 +67797,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -58909,7 +67822,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modfl(0, 0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -58936,12 +67849,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -58954,12 +67867,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _modfl
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59073,10 +67986,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59095,10 +68008,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powl(0, 0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -59125,12 +68042,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59143,12 +68060,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59256,10 +68173,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59278,10 +68195,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powl(0, 0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -59308,12 +68229,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59326,12 +68247,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _powl
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59445,10 +68366,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59467,14 +68388,193 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+int
+main ()
+{
+ sincosf(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_sincosf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_sincosf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
+
+for ac_func in sincosf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- sqrtl(0);
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -59501,12 +68601,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59519,12 +68619,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in sqrtl
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59630,12 +68730,18 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59661,7 +68767,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtl(0);
+ finitef(0);
   ;
   return 0;
 }
@@ -59688,12 +68794,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59706,12 +68812,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in _sqrtl
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -59817,18 +68923,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -59847,10 +68947,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- sincosl(0, 0, 0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -59877,12 +68981,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -59895,12 +68999,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in sincosl
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60006,24 +69110,29 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -60033,7 +69142,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosl(0, 0, 0);
+acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
   ;
   return 0;
 }
@@ -60060,30 +69169,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in _sincosl
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60189,18 +69303,10 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+  else
+    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -60219,14 +69325,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- finitel(0);
+_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
   ;
   return 0;
 }
@@ -60253,12 +69355,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -60267,16 +69369,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in finitel
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60382,38 +69489,47 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+
+
+
+
+
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _finitel(0);
+ceill (0); floorl (0);
   ;
   return 0;
 }
@@ -60440,30 +69556,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in _finitel
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60569,92 +69683,80 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
+  else
+    echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <math.h>
 int
 main ()
 {
-main ();
+_ceill (0); _floorl (0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func__long_double_round_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-  LIBS="-lm $LIBS"
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 fi
 
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
+
 
-for ac_func in copysignf
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60757,124 +69859,99 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+    fi
+  fi
 
 
-for ac_func in __signbit
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-return f != $ac_func;
+ isnanl(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func_isnanl_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in __signbitf
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -60977,15 +70054,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isnanl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnanl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnanl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61088,29 +70241,21 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
+    fi
   fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
 
 
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
 
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61128,11 +70273,15 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- strtold(0, 0);
+ isinfl(0);
   ;
   return 0;
 }
@@ -61159,12 +70308,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+glibcxx_cv_func_isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61177,11 +70326,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
 
-for ac_func in strtold
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61287,16 +70437,12 @@ _ACEOF
 fi
 done
 
-  fi
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61314,11 +70460,15 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- strtof(0, 0);
+ _isinfl(0);
   ;
   return 0;
 }
@@ -61345,12 +70495,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61363,11 +70513,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-for ac_func in strtof
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61473,147 +70624,18 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
 
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LDEXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
-_ACEOF
-
-    ;;
-
-  *-darwin*)
-    # Darwin versions vary, but the linker should work in a cross environment,
-    # so we just check for all the features here.
-    # Check for available headers.
-
-    # Don't call GLIBCXX_CHECK_LINKER_FEATURES, Darwin doesn't have a GNU ld
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char sin ();
-int
-main ()
-{
-sin ();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_cv_lib_m_sin=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
-fi
-
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
-
-
 
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61632,14 +70654,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isinf(0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -61666,12 +70684,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61684,12 +70702,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in isinf
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61797,10 +70815,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -61819,14 +70837,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isinf(0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -61853,12 +70867,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -61871,12 +70885,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in _isinf
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -61990,10 +71004,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62019,7 +71033,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isnan(0);
+ expl(0);
   ;
   return 0;
 }
@@ -62046,12 +71060,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62064,12 +71078,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in isnan
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62177,10 +71191,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62206,7 +71220,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isnan(0);
+ _expl(0);
   ;
   return 0;
 }
@@ -62233,12 +71247,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62251,12 +71265,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _isnan
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62370,10 +71384,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62399,7 +71413,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finite(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -62426,12 +71440,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finite_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62444,12 +71458,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in finite
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62557,10 +71571,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62586,7 +71600,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finite(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -62613,12 +71627,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finite_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62631,12 +71645,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in _finite
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62750,10 +71764,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62775,7 +71789,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysign(0, 0);
+ fmodl(0, 0);
   ;
   return 0;
 }
@@ -62802,12 +71816,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -62820,12 +71834,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -62933,10 +71947,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -62958,7 +71972,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysign(0, 0);
+ _fmodl(0, 0);
   ;
   return 0;
 }
@@ -62985,12 +71999,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__fmodl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63003,12 +72017,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63122,10 +72136,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63147,7 +72161,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincos(0, 0, 0);
+ frexpl(0, 0);
   ;
   return 0;
 }
@@ -63174,12 +72188,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+glibcxx_cv_func_frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63192,12 +72206,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in sincos
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63305,10 +72319,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63330,7 +72344,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincos(0, 0, 0);
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -63357,12 +72371,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63375,12 +72389,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63494,10 +72508,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63516,14 +72530,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fpclass(0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -63550,12 +72560,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63568,12 +72578,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in fpclass
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63681,10 +72691,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63703,14 +72713,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fpclass(0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -63737,12 +72743,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63755,12 +72761,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _fpclass
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -63874,10 +72880,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -63896,14 +72902,193 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+int
+main ()
+{
+ ldexpl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_ldexpl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_ldexpl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+
+for ac_func in ldexpl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- qfpclass(0);
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+  else
+
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -63930,12 +73115,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -63948,12 +73133,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in qfpclass
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64059,12 +73244,18 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64090,7 +73281,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _qfpclass(0);
+ logl(0);
   ;
   return 0;
 }
@@ -64117,12 +73308,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64135,12 +73326,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in _qfpclass
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64246,18 +73437,12 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64276,10 +73461,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypot(0, 0);
+ _logl(0);
   ;
   return 0;
 }
@@ -64306,12 +73495,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64324,12 +73513,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64435,12 +73624,18 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64459,10 +73654,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypot(0, 0);
+ log10l(0);
   ;
   return 0;
 }
@@ -64489,12 +73688,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64507,12 +73706,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64618,39 +73817,38 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-    echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -64677,35 +73875,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64811,10 +74004,18 @@ _ACEOF
 fi
 done
 
-  else
-    echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -64836,7 +74037,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -64863,12 +74064,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -64877,21 +74078,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -64997,37 +74193,24 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-
-
-
-
-
-
-
+  else
 
-    echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -65037,7 +74220,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-ceilf (0); floorf (0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -65064,28 +74247,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65191,10 +74376,18 @@ _ACEOF
 fi
 done
 
-  else
-    echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65216,7 +74409,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_ceilf (0); _floorf (0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -65243,12 +74436,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65257,14 +74450,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in _ceilf _floorf
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65370,20 +74565,201 @@ _ACEOF
 fi
 done
 
-    fi
+  else
+
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _powl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__powl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__powl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
+for ac_func in _powl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65409,7 +74785,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- expf(0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -65436,12 +74812,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65454,12 +74830,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65567,10 +74943,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65596,7 +74972,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _expf(0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -65623,12 +74999,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65641,12 +75017,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65760,10 +75136,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65782,14 +75158,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isnanf(0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -65816,12 +75188,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -65834,12 +75206,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in isnanf
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -65947,10 +75319,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -65969,14 +75341,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isnanf(0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -66003,12 +75371,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66021,12 +75389,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in _isnanf
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66140,197 +75508,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
-int
-main ()
-{
- isinff(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_isinff_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
-
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
-
-for ac_func in isinff
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66356,7 +75537,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinff(0);
+ finitel(0);
   ;
   return 0;
 }
@@ -66383,12 +75564,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinff_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66401,12 +75582,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in _isinff
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66506,24 +75687,18 @@ echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
 echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
 if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-    fi
-  fi
-
-
-
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+fi
+done
 
+  else
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66542,10 +75717,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- atan2f(0, 0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -66572,12 +75751,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66590,12 +75769,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66701,12 +75880,26 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+
+
+
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66724,11 +75917,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <stdlib.h>
 int
 main ()
 {
- _atan2f(0, 0);
+ strtold(0, 0);
   ;
   return 0;
 }
@@ -66755,12 +75948,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func_strtold_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66773,12 +75966,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
-
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -66884,18 +76076,16 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
 
 
-
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -66913,15 +76103,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- fabsf(0);
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -66948,12 +76134,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -66966,12 +76152,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
-
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -67077,96 +76262,424 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
 
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+    ;;
+
+  *djgpp)
+    # GLIBCXX_CHECK_MATH_SUPPORT
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINCOS 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+    ;;
+
+  *-freebsd*)
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
 int
 main ()
 {
- _fabsf(0);
+ two();
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  ac_gcsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+ac_gcsections=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
 
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
 
-fi
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
 
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _fabsf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SETENV 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOTF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANF 1
+_ACEOF
+
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_CEILF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FLOORF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LDEXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
+
+    if test x"long_double_math_on_this_cpu" = x"yes"; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANL 1
+_ACEOF
+
+    fi
+    ;;
+  *-hpux*)
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -67177,47 +76690,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
 int
 main ()
 {
-return f != $ac_func;
+ two();
   ;
   return 0;
 }
@@ -67244,172 +76723,244 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_gcsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_gcsections=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
 
-fi
-done
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
 
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
     fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
   fi
 
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
 
 
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    # GLIBCXX_CHECK_MATH_SUPPORT
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNAN 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ACOSF 1
+_ACEOF
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ASINF 1
+_ACEOF
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATANF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- fmodf(0, 0);
-  ;
-  return 0;
-}
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_TANHF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_EXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_ATAN2F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FABSF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FMODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_FREXPF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_POWF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SQRTF 1
+_ACEOF
+
+
+    # GLIBCXX_CHECK_STDLIB_SUPPORT
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRTOLD 1
+_ACEOF
+
+
+
+   # Check whether --enable-tls or --disable-tls was given.
+if test "${enable_tls+set}" = set; then
+  enableval="$enable_tls"
+
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable tls must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable tls must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
+
+else
+  enable_tls=yes
+fi;
+
+  echo "$as_me:$LINENO: checking whether the target supports thread-local storage" >&5
+echo $ECHO_N "checking whether the target supports thread-local storage... $ECHO_C" >&6
+if test "${gcc_cv_have_tls+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test "$cross_compiling" = yes; then
+                if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  gcc_cv_have_tls=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
+gcc_cv_have_tls=no
 fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
-
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in fmodf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+                      chktls_save_LDFLAGS="$LDFLAGS"
+      LDFLAGS="-static $LDFLAGS"
+      if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
 fi
 cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+int main() { return 0; }
 _ACEOF
 rm -f conftest.$ac_objext conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
@@ -67433,243 +76984,261 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gcc_cv_have_tls=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+( exit $ac_status )
+gcc_cv_have_tls=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+gcc_cv_have_tls=yes
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+      LDFLAGS="$chktls_save_LDFLAGS"
+      if test $gcc_cv_have_tls = yes; then
+                                               chktls_save_CFLAGS="$CFLAGS"
+       thread_CFLAGS=failed
+       for flag in '' '-pthread' '-lpthread'; do
+         CFLAGS="$flag $chktls_save_CFLAGS"
+         if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+#include <pthread.h>
+               void *g(void *d) { return NULL; }
 int
 main ()
 {
- _fmodf(0, 0);
+pthread_t t; pthread_create(&t,NULL,g,NULL);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  thread_CFLAGS="$flag"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
 fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
-
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
-
-for ac_func in _fmodf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+         if test "X$thread_CFLAGS" != Xfailed; then
+           break
+         fi
+       done
+       CFLAGS="$chktls_save_CFLAGS"
+       if test "X$thread_CFLAGS" != Xfailed; then
+         CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS"
+         if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <pthread.h>
+               __thread int a;
+               static int *a_in_other_thread;
+               static void *
+               thread_func (void *arg)
+               {
+                 a_in_other_thread = &a;
+                 return (void *)0;
+               }
 int
 main ()
 {
-return f != $ac_func;
+pthread_t thread;
+               void *thread_retval;
+               int *a_in_main_thread;
+               if (pthread_create (&thread, (pthread_attr_t *)0,
+                                   thread_func, (void *)0))
+                 return 0;
+               a_in_main_thread = &a;
+               if (pthread_join (thread, &thread_retval))
+                 return 0;
+               return (a_in_other_thread == a_in_main_thread);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
+rm -f conftest$ac_exeext
 if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
+  (eval $ac_link) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  gcc_cv_have_tls=yes
 else
-  echo "$as_me: failed program was:" >&5
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+         CFLAGS="$chktls_save_CFLAGS"
+       fi
+      fi
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-done
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_have_tls" >&5
+echo "${ECHO_T}$gcc_cv_have_tls" >&6
+  if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
 
-    fi
-  fi
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TLS 1
+_ACEOF
 
+  fi
+    case "$target" in
+      *-hpux10*)
+       cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINF 1
+_ACEOF
 
+       cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFF 1
+_ACEOF
 
+       cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANF 1
+_ACEOF
 
+       cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
 
+       cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEF 1
+_ACEOF
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+       ;;
+    esac
+    ;;
+  *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu)
 
+  # All these tests are for C++; save the language and the compiler flags.
+  # The CXXFLAGS thing is suspicious, but based on similar bits previously
+  # found in GLIBCXX_CONFIGURE.
 
 
-      ac_ext=cc
+  ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+
+  # Check for maintainer-mode bits.
+  if test x"$USE_MAINTAINER_MODE" = xno; then
+    WERROR=''
+  else
+    WERROR='-Werror'
+  fi
+
+  # Check for -ffunction-sections -fdata-sections
+  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
+echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
+  CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
+  cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
+int foo; void bar() { };
 int
 main ()
 {
- frexpf(0, 0);
+
   ;
   return 0;
 }
@@ -67696,38 +77265,104 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  ac_fdsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+ac_fdsections=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+  if test "$ac_test_CXXFLAGS" = set; then
+    CXXFLAGS="$ac_save_CXXFLAGS"
+  else
+    # this is the suspicious part
+    CXXFLAGS=''
+  fi
+  if test x"$ac_fdsections" = x"yes"; then
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  fi
+  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
+echo "${ECHO_T}$ac_fdsections" >&6
+
+  ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-fi
 
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
 
-for ac_func in frexpf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -67738,47 +77373,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
 int
 main ()
 {
-return f != $ac_func;
+ two();
   ;
   return 0;
 }
@@ -67805,112 +77406,76 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_gcsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_gcsections=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
 
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- _frexpf(0, 0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
 
-glibcxx_cv_func__frexpf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
-for ac_func in _frexpf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -67921,47 +77486,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char sin ();
 int
 main ()
 {
-return f != $ac_func;
+sin ();
   ;
   return 0;
 }
@@ -67988,38 +77524,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_m_sin=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_m_sin=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
 fi
-done
-
-    fi
-  fi
-
-
 
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68038,10 +77568,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypotf(0, 0);
+ isinf(0);
   ;
   return 0;
 }
@@ -68068,12 +77602,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68086,12 +77620,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68199,10 +77733,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68221,10 +77755,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypotf(0, 0);
+ _isinf(0);
   ;
   return 0;
 }
@@ -68251,12 +77789,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68269,12 +77807,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68388,10 +77926,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68410,10 +77948,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- ldexpf(0, 0);
+ isnan(0);
   ;
   return 0;
 }
@@ -68440,12 +77982,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68458,12 +78000,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68571,10 +78113,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68593,10 +78135,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _ldexpf(0, 0);
+ _isnan(0);
   ;
   return 0;
 }
@@ -68623,12 +78169,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func__isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func__isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68641,12 +78187,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in _isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68760,10 +78306,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68789,7 +78335,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- logf(0);
+ finite(0);
   ;
   return 0;
 }
@@ -68816,12 +78362,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -68834,12 +78380,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -68947,10 +78493,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -68976,7 +78522,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _logf(0);
+ _finite(0);
   ;
   return 0;
 }
@@ -69003,12 +78549,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69021,12 +78567,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -69140,10 +78686,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69162,14 +78708,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- log10f(0);
+ sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -69196,12 +78738,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69214,12 +78756,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in log10f
+for ac_func in sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -69327,10 +78869,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69349,14 +78891,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _log10f(0);
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -69383,12 +78921,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10f_use=no
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69401,12 +78939,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _log10f
+for ac_func in _sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -69520,10 +79058,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69542,10 +79080,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- modff(0, 0);
+ fpclass(0);
   ;
   return 0;
 }
@@ -69572,12 +79114,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69590,12 +79132,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -69703,10 +79245,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69725,10 +79267,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _modff(0, 0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -69755,12 +79301,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69773,12 +79319,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -69892,10 +79438,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modf declaration" >&5
-echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modf_use+set} != xset; then
-    if test "${glibcxx_cv_func_modf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -69914,10 +79460,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- modf(0, 0);
+ qfpclass(0);
   ;
   return 0;
 }
@@ -69944,12 +79494,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modf_use=yes
+  glibcxx_cv_func_qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modf_use=no
+glibcxx_cv_func_qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -69962,12 +79512,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
 
-  if test x$glibcxx_cv_func_modf_use = x"yes"; then
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
 
-for ac_func in modf
+for ac_func in qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -70075,10 +79625,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modf declaration" >&5
-echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modf_use+set} != xset; then
-    if test "${glibcxx_cv_func__modf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -70097,10 +79647,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _modf(0, 0);
+ _qfpclass(0);
   ;
   return 0;
 }
@@ -70127,12 +79681,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modf_use=yes
+  glibcxx_cv_func__qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modf_use=no
+glibcxx_cv_func__qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -70145,12 +79699,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
 
-    if test x$glibcxx_cv_func__modf_use = x"yes"; then
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
 
-for ac_func in _modf
+for ac_func in _qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -70264,10 +79818,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -70289,7 +79843,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- powf(0, 0);
+ hypot(0, 0);
   ;
   return 0;
 }
@@ -70316,12 +79870,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -70334,12 +79888,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
 
-for ac_func in powf
+for ac_func in hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -70447,10 +80001,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -70472,7 +80026,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _powf(0, 0);
+ _hypot(0, 0);
   ;
   return 0;
 }
@@ -70499,12 +80053,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func__hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func__hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -70517,12 +80071,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in _hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -70636,223 +80190,31 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
-int
-main ()
-{
- sqrtf(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_sqrtf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
-
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
-
-for ac_func in sqrtf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _sqrtf(0);
+acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
   ;
   return 0;
 }
@@ -70879,30 +80241,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func_float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func_float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _sqrtf
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71008,18 +80375,10 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
+  else
+    echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -71041,7 +80400,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosf(0, 0, 0);
+_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
   ;
   return 0;
 }
@@ -71068,12 +80427,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosf_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -71082,16 +80441,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in sincosf
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71197,24 +80561,37 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+
+
+
+
+
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -71224,7 +80601,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ceilf (0); floorf (0);
   ;
   return 0;
 }
@@ -71251,30 +80628,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func_float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func_float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in ceilf floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71380,18 +80755,10 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  else
+    echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -71410,14 +80777,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- finitef(0);
+_ceilf (0); _floorf (0);
   ;
   return 0;
 }
@@ -71444,12 +80807,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -71458,16 +80821,14 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71573,12 +80934,20 @@ _ACEOF
 fi
 done
 
-  else
+    fi
+  fi
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -71604,7 +80973,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finitef(0);
+ expf(0);
   ;
   return 0;
 }
@@ -71631,12 +81000,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func_expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func_expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -71649,12 +81018,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
 
-for ac_func in _finitef
+for ac_func in expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71760,39 +81129,38 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
-
-
+  else
 
-    echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
+ _expf(0);
   ;
   return 0;
 }
@@ -71819,35 +81187,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func__expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func__expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
-for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
+for ac_func in _expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -71953,10 +81316,18 @@ _ACEOF
 fi
 done
 
-  else
-    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -71975,10 +81346,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
+ isnanf(0);
   ;
   return 0;
 }
@@ -72005,12 +81380,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func_isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func_isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72019,21 +81394,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
 
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
 
-for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -72139,47 +81509,231 @@ _ACEOF
 fi
 done
 
-    fi
+  else
+
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isnanf(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isnanf_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isnanf_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
+
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
+
+for ac_func in _isnanf
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
 
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
 
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
 
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
+fi
+done
 
+    fi
+  fi
 
 
 
 
 
 
-    echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-ceill (0); floorl (0);
+ isinff(0);
   ;
   return 0;
 }
@@ -72206,28 +81760,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func_isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func_isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
 
-for ac_func in ceill floorl
+for ac_func in isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -72334,9 +81890,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -72355,10 +81913,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-_ceill (0); _floorl (0);
+ _isinff(0);
   ;
   return 0;
 }
@@ -72385,12 +81947,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72399,14 +81961,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
-for ac_func in _ceill _floorl
+for ac_func in _isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -72520,12 +82084,10 @@ done
 
 
 
-
-
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -72544,14 +82106,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isnanl(0);
+ atan2f(0, 0);
   ;
   return 0;
 }
@@ -72578,12 +82136,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func_atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func_atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72596,12 +82154,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -72709,10 +82267,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -72731,14 +82289,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isnanl(0);
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -72765,12 +82319,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72783,12 +82337,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -72902,10 +82456,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -72931,7 +82485,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- isinfl(0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -72958,12 +82512,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -72976,12 +82530,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -73089,10 +82643,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -73118,7 +82672,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _isinfl(0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -73145,12 +82699,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -73163,12 +82717,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -73282,10 +82836,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -73307,7 +82861,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- copysignl(0, 0);
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -73334,12 +82888,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -73352,12 +82906,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -73465,10 +83019,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -73490,7 +83044,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _copysignl(0, 0);
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -73517,12 +83071,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -73535,12 +83089,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -73654,10 +83208,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -73679,7 +83233,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- atan2l(0, 0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -73706,12 +83260,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -73724,12 +83278,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -73837,10 +83391,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -73862,7 +83416,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _atan2l(0, 0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -73889,12 +83443,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -73907,12 +83461,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74026,10 +83580,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74048,14 +83602,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- expl(0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -74082,12 +83632,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -74100,12 +83650,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74213,10 +83763,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74235,14 +83785,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _expl(0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -74269,12 +83815,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -74287,12 +83833,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74406,10 +83952,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74428,14 +83974,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fabsl(0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -74462,12 +84004,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -74480,12 +84022,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74593,10 +84135,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74615,14 +84157,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fabsl(0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -74649,12 +84187,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -74667,12 +84205,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74786,10 +84324,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74808,10 +84346,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- fmodl(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -74838,12 +84380,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -74856,12 +84398,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -74969,10 +84511,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -74991,10 +84533,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _fmodl(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -75021,12 +84567,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75039,12 +84585,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -75158,10 +84704,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -75180,10 +84726,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- frexpl(0, 0);
+ log10f(0);
   ;
   return 0;
 }
@@ -75210,12 +84760,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75228,12 +84778,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -75341,10 +84891,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -75363,10 +84913,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _frexpl(0, 0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -75393,12 +84947,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75411,12 +84965,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -75530,10 +85084,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -75555,7 +85109,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotl(0, 0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -75582,12 +85136,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75600,12 +85154,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -75713,10 +85267,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -75738,7 +85292,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -75765,12 +85319,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75783,12 +85337,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -75902,10 +85456,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modf declaration" >&5
+echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modf_use+set} != xset; then
+    if test "${glibcxx_cv_func_modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -75927,7 +85481,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- ldexpl(0, 0);
+ modf(0, 0);
   ;
   return 0;
 }
@@ -75954,12 +85508,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func_modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func_modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -75972,12 +85526,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modf_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76085,10 +85639,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modf declaration" >&5
+echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modf_use+set} != xset; then
+    if test "${glibcxx_cv_func__modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -76110,7 +85664,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _ldexpl(0, 0);
+ _modf(0, 0);
   ;
   return 0;
 }
@@ -76137,12 +85691,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func__modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func__modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -76155,12 +85709,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modf_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in _modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76274,10 +85828,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -76296,14 +85850,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- logl(0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -76330,12 +85880,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -76348,12 +85898,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in logl
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76461,10 +86011,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -76483,14 +86033,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _logl(0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -76517,12 +86063,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -76535,12 +86081,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _logl
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76654,10 +86200,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -76683,7 +86229,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- log10l(0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -76710,12 +86256,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -76728,12 +86274,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -76841,10 +86387,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -76870,7 +86416,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _log10l(0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -76897,12 +86443,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10l_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -76915,12 +86461,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _log10l
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77034,10 +86580,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -77059,7 +86605,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modfl(0, 0);
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -77086,12 +86632,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -77104,12 +86650,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77217,10 +86763,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -77242,7 +86788,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modfl(0, 0);
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -77269,12 +86815,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -77287,12 +86833,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _modfl
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77406,10 +86952,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -77428,10 +86974,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powl(0, 0);
+ finitef(0);
   ;
   return 0;
 }
@@ -77458,12 +87008,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -77476,12 +87026,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77589,10 +87139,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -77611,10 +87161,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powl(0, 0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -77641,12 +87195,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -77659,12 +87213,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _powl
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77778,36 +87332,31 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- sqrtl(0);
+acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
   ;
   return 0;
 }
@@ -77834,30 +87383,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in sqrtl
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -77964,11 +87518,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -77987,14 +87539,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _sqrtl(0);
+_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
   ;
   return 0;
 }
@@ -78021,12 +87569,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -78035,16 +87583,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _sqrtl
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78158,22 +87711,29 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -78183,7 +87743,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosl(0, 0, 0);
+ceill (0); floorl (0);
   ;
   return 0;
 }
@@ -78210,30 +87770,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in sincosl
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78340,11 +87898,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -78366,7 +87922,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosl(0, 0, 0);
+_ceill (0); _floorl (0);
   ;
   return 0;
 }
@@ -78393,12 +87949,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -78407,16 +87963,14 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in _sincosl
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78530,10 +88084,12 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -78559,7 +88115,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finitel(0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -78586,12 +88142,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -78604,12 +88160,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in finitel
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78717,10 +88273,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -78746,7 +88302,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finitel(0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -78773,12 +88329,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -78791,12 +88347,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _finitel
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -78909,85 +88465,87 @@ done
 
 
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
-
-
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-main ();
+ isinfl(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func_isinfl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79090,14 +88648,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _isinfl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__isinfl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__isinfl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79200,125 +88835,93 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+    fi
+  fi
 
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+
+
+
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ atan2l(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func_atan2l_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79421,29 +89024,15 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
+  else
 
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -79461,11 +89050,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
 int
 main ()
 {
- strtold(0, 0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -79492,12 +89081,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -79510,11 +89099,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-for ac_func in strtold
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79620,16 +89210,18 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
 
 
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -79647,11 +89239,15 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- strtof(0, 0);
+ expl(0);
   ;
   return 0;
 }
@@ -79678,12 +89274,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -79696,11 +89292,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-for ac_func in strtof
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -79806,306 +89403,88 @@ _ACEOF
 fi
 done
 
-  fi
-
-
-
-
-
-  CXXFLAGS="$ac_save_CXXFLAGS"
-
-    ;;
-
-  *djgpp)
-    # GLIBCXX_CHECK_MATH_SUPPORT
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINCOS 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    # GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT
-    # GLIBCXX_CHECK_STDLIB_SUPPORT
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    ;;
-
-  *-freebsd*)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
-
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
-
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
-
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
   else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
-  fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
-
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
-
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
 
-int
-main ()
-{
- two();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_gcsections=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
-
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
-
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
-
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
-
-
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-main ();
+ _expl(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func__expl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -80208,14 +89587,97 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ fabsl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fabsl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fabsl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -80318,125 +89780,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+  else
 
-
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-return f != $ac_func;
+ _fabsl(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func__fabsl_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in _fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -80539,357 +89967,101 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SETENV 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ACOSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ASINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATAN2F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ATANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_CEILF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_EXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FABSF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FLOORF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FMODF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LDEXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_POWF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SQRTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_TANHF 1
-_ACEOF
-
-    if test x"long_double_math_on_this_cpu" = x"yes"; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANL 1
-_ACEOF
-
     fi
-    ;;
-  *-hpux*)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
+  fi
 
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 
 
 
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
 
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
 
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
 
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
-  fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
-
+#include <math.h>
 int
 main ()
 {
- two();
+ fmodl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  glibcxx_cv_func_fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_gcsections=no
+glibcxx_cv_func_fmodl_use=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
 
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
+fi
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
 
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
 
-
-
-
-
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
+for ac_func in fmodl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -80900,12 +90072,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
-main ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -80932,140 +90139,104 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
   cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-  LIBS="-lm $LIBS"
-
 fi
+done
 
+  else
 
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ _fmodl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+glibcxx_cv_func__fmodl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
 
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -81168,125 +90339,93 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+    fi
+  fi
 
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+
+
+
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ frexpl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func_frexpl_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -81389,104 +90528,37 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    case "$target" in
-      *-hpux10*)
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFF 1
-_ACEOF
-
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-       cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-       ;;
-    esac
-    ;;
-  *-linux* | *-uclinux* | *-gnu* | *-kfreebsd*-gnu | *-knetbsd*-gnu)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  else
 
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  # All these tests are for C++; save the language and the compiler flags.
-  # The CXXFLAGS thing is suspicious, but based on similar bits previously
-  # found in GLIBCXX_CONFIGURE.
 
 
-  ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-
-  # Check for maintainer-mode bits.
-  if test x"$USE_MAINTAINER_MODE" = xno; then
-    WERROR=''
-  else
-    WERROR='-Werror'
-  fi
-
-  # Check for -ffunction-sections -fdata-sections
-  echo "$as_me:$LINENO: checking for g++ that supports -ffunction-sections -fdata-sections" >&5
-echo $ECHO_N "checking for g++ that supports -ffunction-sections -fdata-sections... $ECHO_C" >&6
-  CXXFLAGS='-g -Werror -ffunction-sections -fdata-sections'
-  cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-int foo; void bar() { };
+#include <math.h>
 int
 main ()
 {
-
+ _frexpl(0, 0);
   ;
   return 0;
 }
@@ -81513,217 +90585,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_fdsections=yes
+  glibcxx_cv_func__frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_fdsections=no
+glibcxx_cv_func__frexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-  if test "$ac_test_CXXFLAGS" = set; then
-    CXXFLAGS="$ac_save_CXXFLAGS"
-  else
-    # this is the suspicious part
-    CXXFLAGS=''
-  fi
-  if test x"$ac_fdsections" = x"yes"; then
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-  fi
-  echo "$as_me:$LINENO: result: $ac_fdsections" >&5
-echo "${ECHO_T}$ac_fdsections" >&6
-
-  ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
-
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
-
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
-
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
-  fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
-
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
-
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
-
-int
-main ()
-{
- two();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_gcsections=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_gcsections=no
 fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
-
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
-
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
 
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
 
-
-
-
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
-
-    echo "$as_me:$LINENO: checking for sin in -lm" >&5
-echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_sin+set}" = set; then
+for ac_func in _frexpl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -81734,18 +90627,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
+{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char sin ();
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
 int
 main ()
 {
-sin ();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -81772,32 +90694,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_sin=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_sin=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
-echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
-if test $ac_cv_lib_m_sin = yes; then
-  libm="-lm"
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
 fi
+done
 
-  ac_save_LIBS="$LIBS"
-  LIBS="$LIBS $libm"
+    fi
+  fi
 
 
 
-  echo "$as_me:$LINENO: checking for isinf declaration" >&5
-echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
+
+
+
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -81816,14 +90744,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isinf(0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -81850,12 +90774,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinf_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinf_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -81868,12 +90792,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
 
-for ac_func in isinf
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -81981,10 +90905,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
-echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -82003,14 +90927,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isinf(0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -82037,12 +90957,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinf_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinf_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -82055,12 +90975,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
 
-for ac_func in _isinf
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -82174,10 +91094,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isnan declaration" >&5
-echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -82196,14 +91116,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isnan(0);
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -82230,12 +91146,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnan_use=yes
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnan_use=no
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -82248,12 +91164,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-for ac_func in isnan
+for ac_func in ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -82361,10 +91277,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
-echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -82383,14 +91299,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isnan(0);
+ _ldexpl(0, 0);
   ;
   return 0;
 }
@@ -82417,12 +91329,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnan_use=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnan_use=no
+glibcxx_cv_func__ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -82435,12 +91347,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
 
-    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in _isnan
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -82554,197 +91466,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finite declaration" >&5
-echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finite_use+set} != xset; then
-    if test "${glibcxx_cv_func_finite_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
-int
-main ()
-{
- finite(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func_finite_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func_finite_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
-
-  if test x$glibcxx_cv_func_finite_use = x"yes"; then
-
-for ac_func in finite
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _finite declaration" >&5
-echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finite_use+set} != xset; then
-    if test "${glibcxx_cv_func__finite_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -82770,196 +91495,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finite(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__finite_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-glibcxx_cv_func__finite_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
-
-    if test x$glibcxx_cv_func__finite_use = x"yes"; then
-
-for ac_func in _finite
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-    fi
-  fi
-
-
-
-
-
-
-  echo "$as_me:$LINENO: checking for copysign declaration" >&5
-echo $ECHO_N "checking for copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysign_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-int
-main ()
-{
- copysign(0, 0);
+ logl(0);
   ;
   return 0;
 }
@@ -82986,12 +91522,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysign_use=yes
+  glibcxx_cv_func_logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysign_use=no
+glibcxx_cv_func_logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83004,12 +91540,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
-  if test x$glibcxx_cv_func_copysign_use = x"yes"; then
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in copysign
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83117,10 +91653,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysign declaration" >&5
-echo $ECHO_N "checking for _copysign declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysign_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysign_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -83139,10 +91675,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _copysign(0, 0);
+ _logl(0);
   ;
   return 0;
 }
@@ -83169,12 +91709,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysign_use=yes
+  glibcxx_cv_func__logl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysign_use=no
+glibcxx_cv_func__logl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83187,12 +91727,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysign_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysign_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
-    if test x$glibcxx_cv_func__copysign_use = x"yes"; then
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _copysign
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83306,10 +91846,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincos declaration" >&5
-echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -83328,10 +91868,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- sincos(0, 0, 0);
+ log10l(0);
   ;
   return 0;
 }
@@ -83358,12 +91902,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincos_use=yes
+  glibcxx_cv_func_log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincos_use=no
+glibcxx_cv_func_log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83376,12 +91920,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in sincos
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83489,10 +92033,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
-echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -83511,10 +92055,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _sincos(0, 0, 0);
+ _log10l(0);
   ;
   return 0;
 }
@@ -83541,12 +92089,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincos_use=yes
+  glibcxx_cv_func__log10l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincos_use=no
+glibcxx_cv_func__log10l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83559,12 +92107,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _sincos
+for ac_func in _log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83678,10 +92226,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
-echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -83700,14 +92248,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fpclass(0);
+ modfl(0, 0);
   ;
   return 0;
 }
@@ -83734,12 +92278,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fpclass_use=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fpclass_use=no
+glibcxx_cv_func_modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83752,12 +92296,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
 
-  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in fpclass
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -83865,10 +92409,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
-echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -83887,14 +92431,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fpclass(0);
+ _modfl(0, 0);
   ;
   return 0;
 }
@@ -83921,12 +92461,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fpclass_use=yes
+  glibcxx_cv_func__modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fpclass_use=no
+glibcxx_cv_func__modfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -83939,12 +92479,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
-    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in _fpclass
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84058,10 +92598,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
-echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -84080,14 +92620,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- qfpclass(0);
+ powl(0, 0);
   ;
   return 0;
 }
@@ -84114,12 +92650,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_qfpclass_use=yes
+  glibcxx_cv_func_powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_qfpclass_use=no
+glibcxx_cv_func_powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -84132,12 +92668,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
-  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in qfpclass
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84245,10 +92781,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
-echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
-    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -84267,14 +92803,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _qfpclass(0);
+ _powl(0, 0);
   ;
   return 0;
 }
@@ -84301,12 +92833,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__qfpclass_use=yes
+  glibcxx_cv_func__powl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__qfpclass_use=no
+glibcxx_cv_func__powl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -84319,12 +92851,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in _qfpclass
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84438,10 +92970,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypot declaration" >&5
-echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -84460,10 +92992,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypot(0, 0);
+ sqrtl(0);
   ;
   return 0;
 }
@@ -84490,12 +93026,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypot_use=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypot_use=no
+glibcxx_cv_func_sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -84508,12 +93044,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
 
-  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in hypot
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84621,10 +93157,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
-echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -84643,10 +93179,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypot(0, 0);
+ _sqrtl(0);
   ;
   return 0;
 }
@@ -84673,12 +93213,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypot_use=yes
+  glibcxx_cv_func__sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypot_use=no
+glibcxx_cv_func__sqrtl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -84691,12 +93231,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
-    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in _hypot
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84810,21 +93350,22 @@ done
 
 
 
-    echo "$as_me:$LINENO: checking for float trig functions" >&5
-echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -84834,7 +93375,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
+ sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -84861,35 +93402,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_trig_use=yes
+  glibcxx_cv_func_sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_trig_use=no
+glibcxx_cv_func_sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
-  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
 
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
 
-for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -84996,9 +93532,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _float trig functions" >&5
-echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -85020,7 +93558,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
+ _sincosl(0, 0, 0);
   ;
   return 0;
 }
@@ -85047,12 +93585,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_trig_use=yes
+  glibcxx_cv_func__sincosl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_trig_use=no
+glibcxx_cv_func__sincosl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -85061,21 +93599,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
-    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85189,39 +93722,36 @@ done
 
 
 
-
-
-
-
-
-
-
-
-    echo "$as_me:$LINENO: checking for float round functions" >&5
-echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-ceilf (0); floorf (0);
+ finitel(0);
   ;
   return 0;
 }
@@ -85248,28 +93778,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_float_round_use=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_float_round_use=no
+glibcxx_cv_func_finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
-  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
 
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in ceilf floorf
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85376,9 +93908,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _float round functions" >&5
-echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -85397,10 +93931,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
-_ceilf (0); _floorf (0);
+ _finitel(0);
   ;
   return 0;
 }
@@ -85427,12 +93965,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__float_round_use=yes
+  glibcxx_cv_func__finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__float_round_use=no
+glibcxx_cv_func__finitel_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -85441,14 +93979,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
-    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in _ceilf _floorf
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85561,13 +94101,19 @@ done
 
 
 
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
-  echo "$as_me:$LINENO: checking for expf declaration" >&5
-echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expf_use+set} != xset; then
-    if test "${glibcxx_cv_func_expf_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -85585,15 +94131,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- expf(0);
+ strtold(0, 0);
   ;
   return 0;
 }
@@ -85620,12 +94162,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expf_use=yes
+  glibcxx_cv_func_strtold_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expf_use=no
+glibcxx_cv_func_strtold_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -85638,12 +94180,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
-
-  if test x$glibcxx_cv_func_expf_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in expf
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85749,12 +94290,16 @@ _ACEOF
 fi
 done
 
-  else
+  fi
 
-  echo "$as_me:$LINENO: checking for _expf declaration" >&5
-echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expf_use+set} != xset; then
-    if test "${glibcxx_cv_func__expf_use+set}" = set; then
+
+
+
+
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -85772,15 +94317,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
+#include <stdlib.h>
 int
 main ()
 {
- _expf(0);
+ strtof(0, 0);
   ;
   return 0;
 }
@@ -85807,12 +94348,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expf_use=yes
+  glibcxx_cv_func_strtof_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expf_use=no
+glibcxx_cv_func_strtof_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -85825,12 +94366,11 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
-
-    if test x$glibcxx_cv_func__expf_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in _expf
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -85936,102 +94476,178 @@ _ACEOF
 fi
 done
 
-    fi
   fi
 
 
 
 
 
+  CXXFLAGS="$ac_save_CXXFLAGS"
 
-  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
-echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+    cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_RANDOM_TR1 1
+_ACEOF
 
 
+   # Check whether --enable-tls or --disable-tls was given.
+if test "${enable_tls+set}" = set; then
+  enableval="$enable_tls"
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+      case "$enableval" in
+       yes|no) ;;
+       *) { { echo "$as_me:$LINENO: error: Argument to enable/disable tls must be yes or no" >&5
+echo "$as_me: error: Argument to enable/disable tls must be yes or no" >&2;}
+   { (exit 1); exit 1; }; } ;;
+      esac
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+else
+  enable_tls=yes
+fi;
 
-int
-main ()
-{
- isnanf(0);
-  ;
-  return 0;
-}
+  echo "$as_me:$LINENO: checking whether the target supports thread-local storage" >&5
+echo $ECHO_N "checking whether the target supports thread-local storage... $ECHO_C" >&6
+if test "${gcc_cv_have_tls+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    if test "$cross_compiling" = yes; then
+                if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanf_use=yes
+  gcc_cv_have_tls=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanf_use=no
+gcc_cv_have_tls=no
 fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
 
 
+else
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+                      chktls_save_LDFLAGS="$LDFLAGS"
+      LDFLAGS="-static $LDFLAGS"
+      if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
 fi
+cat >conftest.$ac_ext <<_ACEOF
+int main() { return 0; }
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+__thread int a; int b; int main() { return a = b; }
+_ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gcc_cv_have_tls=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
-
-  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
-
-for ac_func in isnanf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
+( exit $ac_status )
+gcc_cv_have_tls=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
 else
-  if test x$gcc_no_link = xyes; then
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+gcc_cv_have_tls=yes
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+      LDFLAGS="$chktls_save_LDFLAGS"
+      if test $gcc_cv_have_tls = yes; then
+                                               chktls_save_CFLAGS="$CFLAGS"
+       thread_CFLAGS=failed
+       for flag in '' '-pthread' '-lpthread'; do
+         CFLAGS="$flag $chktls_save_CFLAGS"
+         if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86042,47 +94658,12 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <pthread.h>
+               void *g(void *d) { return NULL; }
 int
 main ()
 {
-return f != $ac_func;
+pthread_t t; pthread_create(&t,NULL,g,NULL);
   ;
   return 0;
 }
@@ -86109,116 +94690,202 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  thread_CFLAGS="$flag"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+         if test "X$thread_CFLAGS" != Xfailed; then
+           break
+         fi
+       done
+       CFLAGS="$chktls_save_CFLAGS"
+       if test "X$thread_CFLAGS" != Xfailed; then
+         CFLAGS="$thread_CFLAGS $chktls_save_CFLAGS"
+         if test "$cross_compiling" = yes; then
+  { { echo "$as_me:$LINENO: error: in \`$ac_pwd':" >&5
+echo "$as_me: error: in \`$ac_pwd':" >&2;}
+{ { echo "$as_me:$LINENO: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&5
+echo "$as_me: error: cannot run test program while cross compiling
+See \`config.log' for more details." >&2;}
+   { (exit 1); exit 1; }; }; }
+else
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <pthread.h>
+               __thread int a;
+               static int *a_in_other_thread;
+               static void *
+               thread_func (void *arg)
+               {
+                 a_in_other_thread = &a;
+                 return (void *)0;
+               }
+int
+main ()
+{
+pthread_t thread;
+               void *thread_retval;
+               int *a_in_main_thread;
+               if (pthread_create (&thread, (pthread_attr_t *)0,
+                                   thread_func, (void *)0))
+                 return 0;
+               a_in_main_thread = &a;
+               if (pthread_join (thread, &thread_retval))
+                 return 0;
+               return (a_in_other_thread == a_in_main_thread);
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } && { ac_try='./conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  gcc_cv_have_tls=yes
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
+( exit $ac_status )
+gcc_cv_have_tls=no
 fi
-done
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+         CFLAGS="$chktls_save_CFLAGS"
+       fi
+      fi
+else
+  echo "$as_me: program exited with status $ac_status" >&5
+echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  else
+( exit $ac_status )
+gcc_cv_have_tls=no
+fi
+rm -f core *.core gmon.out bb.out conftest$ac_exeext conftest.$ac_objext conftest.$ac_ext
+fi
+fi
+echo "$as_me:$LINENO: result: $gcc_cv_have_tls" >&5
+echo "${ECHO_T}$gcc_cv_have_tls" >&6
+  if test "$enable_tls $gcc_cv_have_tls" = "yes yes"; then
 
-  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
-echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_TLS 1
+_ACEOF
 
+  fi
 
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+
+
+          am_save_CPPFLAGS="$CPPFLAGS"
+
+  for element in $INCICONV; do
+    haveit=
+    for x in $CPPFLAGS; do
+
+  acl_save_prefix="$prefix"
+  prefix="$acl_final_prefix"
+  acl_save_exec_prefix="$exec_prefix"
+  exec_prefix="$acl_final_exec_prefix"
+  eval x=\"$x\"
+  exec_prefix="$acl_save_exec_prefix"
+  prefix="$acl_save_prefix"
+
+      if test "X$x" = "X$element"; then
+        haveit=yes
+        break
+      fi
+    done
+    if test -z "$haveit"; then
+      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
+    fi
+  done
+
+
+  echo "$as_me:$LINENO: checking for iconv" >&5
+echo $ECHO_N "checking for iconv... $ECHO_C" >&6
+if test "${am_cv_func_iconv+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+    am_cv_func_iconv="no, consider installing GNU libiconv"
+    am_cv_lib_iconv=no
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
+#include <stdlib.h>
+#include <iconv.h>
 int
 main ()
 {
- _isnanf(0);
+iconv_t cd = iconv_open("","");
+       iconv(cd,NULL,NULL,NULL,NULL);
+       iconv_close(cd);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
+        { ac_try='test -s conftest$ac_exeext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanf_use=yes
+  am_cv_func_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanf_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
 fi
-
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
-
-    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
-
-for ac_func in _isnanf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$am_cv_func_iconv" != yes; then
+      am_save_LIBS="$LIBS"
+      LIBS="$LIBS $LIBICONV"
+      if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86229,47 +94896,14 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <stdlib.h>
+#include <iconv.h>
 int
 main ()
 {
-return f != $ac_func;
+iconv_t cd = iconv_open("","");
+         iconv(cd,NULL,NULL,NULL,NULL);
+         iconv_close(cd);
   ;
   return 0;
 }
@@ -86296,64 +94930,71 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  am_cv_lib_iconv=yes
+        am_cv_func_iconv=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
+      LIBS="$am_save_LIBS"
     fi
-  fi
 
+fi
+echo "$as_me:$LINENO: result: $am_cv_func_iconv" >&5
+echo "${ECHO_T}$am_cv_func_iconv" >&6
+  if test "$am_cv_func_iconv" = yes; then
 
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_ICONV 1
+_ACEOF
 
+  fi
+  if test "$am_cv_lib_iconv" = yes; then
+    echo "$as_me:$LINENO: checking how to link with libiconv" >&5
+echo $ECHO_N "checking how to link with libiconv... $ECHO_C" >&6
+    echo "$as_me:$LINENO: result: $LIBICONV" >&5
+echo "${ECHO_T}$LIBICONV" >&6
+  else
+            CPPFLAGS="$am_save_CPPFLAGS"
+    LIBICONV=
+    LTLIBICONV=
+  fi
 
 
 
-  echo "$as_me:$LINENO: checking for isinff declaration" >&5
-echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
+  if test "$am_cv_func_iconv" = yes; then
+    echo "$as_me:$LINENO: checking for iconv declaration" >&5
+echo $ECHO_N "checking for iconv declaration... $ECHO_C" >&6
+    if test "${am_cv_proto_iconv+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-
-
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
-
       cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+
+#include <stdlib.h>
+#include <iconv.h>
+extern
+#ifdef __cplusplus
+"C"
+#endif
+#if defined(__STDC__) || defined(__cplusplus)
+size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
+#else
+size_t iconv();
+#endif
 
 int
 main ()
 {
- isinff(0);
+
   ;
   return 0;
 }
@@ -86367,7 +95008,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
+        { ac_try='test -z "$ac_c_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -86380,38 +95021,100 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinff_use=yes
+  am_cv_proto_iconv_arg1=""
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinff_use=no
+am_cv_proto_iconv_arg1="const"
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
+      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"
+fi
+
+    am_cv_proto_iconv=`echo "$am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
+    echo "$as_me:$LINENO: result: ${ac_t:-
+         }$am_cv_proto_iconv" >&5
+echo "${ECHO_T}${ac_t:-
+         }$am_cv_proto_iconv" >&6
 
+cat >>confdefs.h <<_ACEOF
+#define ICONV_CONST $am_cv_proto_iconv_arg1
+_ACEOF
+
+  fi
+
+    ;;
+  *-mingw32*)
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 
-fi
 
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
-  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
 
-for ac_func in isinff
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86422,47 +95125,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
 int
 main ()
 {
-return f != $ac_func;
+ two();
   ;
   return 0;
 }
@@ -86489,116 +95158,76 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_gcsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_gcsections=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-done
-
-  else
-
-  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
-echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-
-
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
 
-      ac_ext=cc
-ac_cpp='$CXXCPP $CPPFLAGS'
-ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
 
-      cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
 
-int
-main ()
-{
- _isinff(0);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext
-if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
-  (eval $ac_compile) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_cxx_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest.$ac_objext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinff_use=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
 
-glibcxx_cv_func__isinff_use=no
-fi
-rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
-fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
-    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
-for ac_func in _isinff
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+    echo "$as_me:$LINENO: checking for sin in -lm" >&5
+echo $ECHO_N "checking for sin in -lm... $ECHO_C" >&6
+if test "${ac_cv_lib_m_sin+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-lm  $LIBS"
+if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -86609,47 +95238,18 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
 /* Override any gcc2 internal prototype to avoid an error.  */
 #ifdef __cplusplus
 extern "C"
-{
 #endif
 /* We use char because int might match the return type of a gcc2
    builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+char sin ();
 int
 main ()
 {
-return f != $ac_func;
+sin ();
   ;
   return 0;
 }
@@ -86676,38 +95276,32 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_cv_lib_m_sin=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_cv_lib_m_sin=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
-
+echo "$as_me:$LINENO: result: $ac_cv_lib_m_sin" >&5
+echo "${ECHO_T}$ac_cv_lib_m_sin" >&6
+if test $ac_cv_lib_m_sin = yes; then
+  libm="-lm"
 fi
-done
-
-    fi
-  fi
-
-
 
+  ac_save_LIBS="$LIBS"
+  LIBS="$LIBS $libm"
 
 
 
-  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
-echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinf declaration" >&5
+echo $ECHO_N "checking for isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -86726,10 +95320,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- atan2f(0, 0);
+ isinf(0);
   ;
   return 0;
 }
@@ -86756,12 +95354,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2f_use=yes
+  glibcxx_cv_func_isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2f_use=no
+glibcxx_cv_func_isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -86774,12 +95372,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinf_use" >&6
 
-  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinf_use = x"yes"; then
 
-for ac_func in atan2f
+for ac_func in isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -86887,10 +95485,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
-echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinf declaration" >&5
+echo $ECHO_N "checking for _isinf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -86909,10 +95507,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _atan2f(0, 0);
+ _isinf(0);
   ;
   return 0;
 }
@@ -86939,12 +95541,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2f_use=yes
+  glibcxx_cv_func__isinf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2f_use=no
+glibcxx_cv_func__isinf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -86957,12 +95559,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinf_use" >&6
 
-    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinf_use = x"yes"; then
 
-for ac_func in _atan2f
+for ac_func in _isinf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -87076,10 +95678,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
-echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnan declaration" >&5
+echo $ECHO_N "checking for isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -87105,7 +95707,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fabsf(0);
+ isnan(0);
   ;
   return 0;
 }
@@ -87132,12 +95734,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsf_use=yes
+  glibcxx_cv_func_isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsf_use=no
+glibcxx_cv_func_isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -87150,12 +95752,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnan_use" >&6
 
-  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnan_use = x"yes"; then
 
-for ac_func in fabsf
+for ac_func in isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -87263,10 +95865,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
-echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnan declaration" >&5
+echo $ECHO_N "checking for _isnan declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnan_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnan_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -87292,7 +95894,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fabsf(0);
+ _isnan(0);
   ;
   return 0;
 }
@@ -87319,12 +95921,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsf_use=yes
+  glibcxx_cv_func__isnan_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsf_use=no
+glibcxx_cv_func__isnan_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -87337,12 +95939,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnan_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnan_use" >&6
 
-    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnan_use = x"yes"; then
 
-for ac_func in _fabsf
+for ac_func in _isnan
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -87456,10 +96058,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
-echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finite declaration" >&5
+echo $ECHO_N "checking for finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finite_use+set} != xset; then
+    if test "${glibcxx_cv_func_finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -87478,10 +96080,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- fmodf(0, 0);
+ finite(0);
   ;
   return 0;
 }
@@ -87508,12 +96114,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodf_use=yes
+  glibcxx_cv_func_finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodf_use=no
+glibcxx_cv_func_finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -87526,12 +96132,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finite_use" >&6
 
-  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
+  if test x$glibcxx_cv_func_finite_use = x"yes"; then
 
-for ac_func in fmodf
+for ac_func in finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -87639,10 +96245,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
-echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finite declaration" >&5
+echo $ECHO_N "checking for _finite declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finite_use+set} != xset; then
+    if test "${glibcxx_cv_func__finite_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -87661,10 +96267,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _fmodf(0, 0);
+ _finite(0);
   ;
   return 0;
 }
@@ -87691,12 +96301,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodf_use=yes
+  glibcxx_cv_func__finite_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodf_use=no
+glibcxx_cv_func__finite_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -87709,12 +96319,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finite_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finite_use" >&6
 
-    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
+    if test x$glibcxx_cv_func__finite_use = x"yes"; then
 
-for ac_func in _fmodf
+for ac_func in _finite
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -87828,10 +96438,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
-echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincos declaration" >&5
+echo $ECHO_N "checking for sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -87853,7 +96463,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- frexpf(0, 0);
+ sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -87880,12 +96490,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpf_use=yes
+  glibcxx_cv_func_sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpf_use=no
+glibcxx_cv_func_sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -87898,12 +96508,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincos_use" >&6
 
-  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincos_use = x"yes"; then
 
-for ac_func in frexpf
+for ac_func in sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88011,10 +96621,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
-echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincos declaration" >&5
+echo $ECHO_N "checking for _sincos declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincos_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincos_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88036,7 +96646,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _frexpf(0, 0);
+ _sincos(0, 0, 0);
   ;
   return 0;
 }
@@ -88063,12 +96673,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpf_use=yes
+  glibcxx_cv_func__sincos_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpf_use=no
+glibcxx_cv_func__sincos_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -88081,12 +96691,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincos_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincos_use" >&6
 
-    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincos_use = x"yes"; then
 
-for ac_func in _frexpf
+for ac_func in _sincos
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88200,10 +96810,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
-echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fpclass declaration" >&5
+echo $ECHO_N "checking for fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88222,10 +96832,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- hypotf(0, 0);
+ fpclass(0);
   ;
   return 0;
 }
@@ -88252,12 +96866,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotf_use=yes
+  glibcxx_cv_func_fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotf_use=no
+glibcxx_cv_func_fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -88270,12 +96884,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fpclass_use" >&6
 
-  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
+  if test x$glibcxx_cv_func_fpclass_use = x"yes"; then
 
-for ac_func in hypotf
+for ac_func in fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88383,10 +96997,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
-echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fpclass declaration" >&5
+echo $ECHO_N "checking for _fpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__fpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88405,10 +97019,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _hypotf(0, 0);
+ _fpclass(0);
   ;
   return 0;
 }
@@ -88435,12 +97053,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotf_use=yes
+  glibcxx_cv_func__fpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotf_use=no
+glibcxx_cv_func__fpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -88453,12 +97071,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fpclass_use" >&6
 
-    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
+    if test x$glibcxx_cv_func__fpclass_use = x"yes"; then
 
-for ac_func in _hypotf
+for ac_func in _fpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88572,10 +97190,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
-echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for qfpclass declaration" >&5
+echo $ECHO_N "checking for qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func_qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88594,10 +97212,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- ldexpf(0, 0);
+ qfpclass(0);
   ;
   return 0;
 }
@@ -88624,12 +97246,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpf_use=yes
+  glibcxx_cv_func_qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpf_use=no
+glibcxx_cv_func_qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -88642,12 +97264,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_qfpclass_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
+  if test x$glibcxx_cv_func_qfpclass_use = x"yes"; then
 
-for ac_func in ldexpf
+for ac_func in qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88755,10 +97377,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
-echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _qfpclass declaration" >&5
+echo $ECHO_N "checking for _qfpclass declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__qfpclass_use+set} != xset; then
+    if test "${glibcxx_cv_func__qfpclass_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88777,10 +97399,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _ldexpf(0, 0);
+ _qfpclass(0);
   ;
   return 0;
 }
@@ -88807,12 +97433,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpf_use=yes
+  glibcxx_cv_func__qfpclass_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpf_use=no
+glibcxx_cv_func__qfpclass_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -88825,12 +97451,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__qfpclass_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__qfpclass_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
+    if test x$glibcxx_cv_func__qfpclass_use = x"yes"; then
 
-for ac_func in _ldexpf
+for ac_func in _qfpclass
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -88944,10 +97570,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logf declaration" >&5
-echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logf_use+set} != xset; then
-    if test "${glibcxx_cv_func_logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypot declaration" >&5
+echo $ECHO_N "checking for hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -88966,14 +97592,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- logf(0);
+ hypot(0, 0);
   ;
   return 0;
 }
@@ -89000,12 +97622,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logf_use=yes
+  glibcxx_cv_func_hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logf_use=no
+glibcxx_cv_func_hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -89018,12 +97640,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypot_use" >&6
 
-  if test x$glibcxx_cv_func_logf_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypot_use = x"yes"; then
 
-for ac_func in logf
+for ac_func in hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -89131,10 +97753,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _logf declaration" >&5
-echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logf_use+set} != xset; then
-    if test "${glibcxx_cv_func__logf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypot declaration" >&5
+echo $ECHO_N "checking for _hypot declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypot_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypot_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -89153,14 +97775,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _logf(0);
+ _hypot(0, 0);
   ;
   return 0;
 }
@@ -89187,12 +97805,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logf_use=yes
+  glibcxx_cv_func__hypot_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logf_use=no
+glibcxx_cv_func__hypot_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -89205,12 +97823,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypot_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypot_use" >&6
 
-    if test x$glibcxx_cv_func__logf_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypot_use = x"yes"; then
 
-for ac_func in _logf
+for ac_func in _hypot
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -89324,36 +97942,31 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10f declaration" >&5
-echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for float trig functions" >&5
+echo $ECHO_N "checking for float trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- log10f(0);
+acosf (0); asinf (0); atanf (0); cosf (0); sinf (0); tanf (0); coshf (0); sinhf (0); tanhf (0);
   ;
   return 0;
 }
@@ -89380,30 +97993,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10f_use=yes
+  glibcxx_cv_func_float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10f_use=no
+glibcxx_cv_func_float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_trig_use" >&6
+  if test x$glibcxx_cv_func_float_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in log10f
+
+
+
+
+
+
+
+for ac_func in acosf asinf atanf cosf sinf tanf coshf sinhf tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -89510,11 +98128,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
-echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _float trig functions" >&5
+echo $ECHO_N "checking for _float trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -89533,14 +98149,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _log10f(0);
+_acosf (0); _asinf (0); _atanf (0); _cosf (0); _sinf (0); _tanf (0); _coshf (0); _sinhf (0); _tanhf (0);
   ;
   return 0;
 }
@@ -89567,12 +98179,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10f_use=yes
+  glibcxx_cv_func__float_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10f_use=no
+glibcxx_cv_func__float_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -89581,16 +98193,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_trig_use" >&6
+    if test x$glibcxx_cv_func__float_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _log10f
+
+
+
+
+
+
+
+for ac_func in _acosf _asinf _atanf _cosf _sinf _tanf _coshf _sinhf _tanhf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -89704,22 +98321,29 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modff declaration" >&5
-echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modff_use+set} != xset; then
-    if test "${glibcxx_cv_func_modff_use+set}" = set; then
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for float round functions" >&5
+echo $ECHO_N "checking for float round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -89729,7 +98353,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- modff(0, 0);
+ceilf (0); floorf (0);
   ;
   return 0;
 }
@@ -89756,30 +98380,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modff_use=yes
+  glibcxx_cv_func_float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modff_use=no
+glibcxx_cv_func_float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_float_round_use" >&6
+  if test x$glibcxx_cv_func_float_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in modff
+for ac_func in ceilf floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -89886,11 +98508,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _modff declaration" >&5
-echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modff_use+set} != xset; then
-    if test "${glibcxx_cv_func__modff_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _float round functions" >&5
+echo $ECHO_N "checking for _float round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__float_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -89912,7 +98532,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _modff(0, 0);
+_ceilf (0); _floorf (0);
   ;
   return 0;
 }
@@ -89939,12 +98559,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modff_use=yes
+  glibcxx_cv_func__float_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modff_use=no
+glibcxx_cv_func__float_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -89953,16 +98573,14 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__float_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__float_round_use" >&6
+    if test x$glibcxx_cv_func__float_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _modff
+for ac_func in _ceilf _floorf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -90076,10 +98694,12 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modf declaration" >&5
-echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modf_use+set} != xset; then
-    if test "${glibcxx_cv_func_modf_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for expf declaration" >&5
+echo $ECHO_N "checking for expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expf_use+set} != xset; then
+    if test "${glibcxx_cv_func_expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -90098,10 +98718,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- modf(0, 0);
+ expf(0);
   ;
   return 0;
 }
@@ -90128,12 +98752,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modf_use=yes
+  glibcxx_cv_func_expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modf_use=no
+glibcxx_cv_func_expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -90146,12 +98770,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expf_use" >&6
 
-  if test x$glibcxx_cv_func_modf_use = x"yes"; then
+  if test x$glibcxx_cv_func_expf_use = x"yes"; then
 
-for ac_func in modf
+for ac_func in expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -90259,10 +98883,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modf declaration" >&5
-echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modf_use+set} != xset; then
-    if test "${glibcxx_cv_func__modf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expf declaration" >&5
+echo $ECHO_N "checking for _expf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expf_use+set} != xset; then
+    if test "${glibcxx_cv_func__expf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -90281,10 +98905,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _modf(0, 0);
+ _expf(0);
   ;
   return 0;
 }
@@ -90311,12 +98939,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modf_use=yes
+  glibcxx_cv_func__expf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modf_use=no
+glibcxx_cv_func__expf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -90329,12 +98957,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expf_use" >&6
 
-    if test x$glibcxx_cv_func__modf_use = x"yes"; then
+    if test x$glibcxx_cv_func__expf_use = x"yes"; then
 
-for ac_func in _modf
+for ac_func in _expf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -90448,10 +99076,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powf declaration" >&5
-echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powf_use+set} != xset; then
-    if test "${glibcxx_cv_func_powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isnanf declaration" >&5
+echo $ECHO_N "checking for isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -90470,10 +99098,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powf(0, 0);
+ isnanf(0);
   ;
   return 0;
 }
@@ -90500,12 +99132,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powf_use=yes
+  glibcxx_cv_func_isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powf_use=no
+glibcxx_cv_func_isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -90518,12 +99150,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanf_use" >&6
 
-  if test x$glibcxx_cv_func_powf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanf_use = x"yes"; then
 
-for ac_func in powf
+for ac_func in isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -90631,10 +99263,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powf declaration" >&5
-echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powf_use+set} != xset; then
-    if test "${glibcxx_cv_func__powf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanf declaration" >&5
+echo $ECHO_N "checking for _isnanf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanf_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -90653,10 +99285,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powf(0, 0);
+ _isnanf(0);
   ;
   return 0;
 }
@@ -90683,12 +99319,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powf_use=yes
+  glibcxx_cv_func__isnanf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powf_use=no
+glibcxx_cv_func__isnanf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -90701,12 +99337,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanf_use" >&6
 
-    if test x$glibcxx_cv_func__powf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanf_use = x"yes"; then
 
-for ac_func in _powf
+for ac_func in _isnanf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -90820,10 +99456,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
-echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinff declaration" >&5
+echo $ECHO_N "checking for isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -90849,7 +99485,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sqrtf(0);
+ isinff(0);
   ;
   return 0;
 }
@@ -90876,12 +99512,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtf_use=yes
+  glibcxx_cv_func_isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtf_use=no
+glibcxx_cv_func_isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -90894,12 +99530,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinff_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinff_use = x"yes"; then
 
-for ac_func in sqrtf
+for ac_func in isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91007,10 +99643,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
-echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinff declaration" >&5
+echo $ECHO_N "checking for _isinff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinff_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -91036,7 +99672,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sqrtf(0);
+ _isinff(0);
   ;
   return 0;
 }
@@ -91063,12 +99699,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtf_use=yes
+  glibcxx_cv_func__isinff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtf_use=no
+glibcxx_cv_func__isinff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -91081,12 +99717,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinff_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinff_use = x"yes"; then
 
-for ac_func in _sqrtf
+for ac_func in _isinff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91200,10 +99836,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
-echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2f declaration" >&5
+echo $ECHO_N "checking for atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -91225,7 +99861,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- sincosf(0, 0, 0);
+ atan2f(0, 0);
   ;
   return 0;
 }
@@ -91252,12 +99888,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosf_use=yes
+  glibcxx_cv_func_atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosf_use=no
+glibcxx_cv_func_atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -91270,12 +99906,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2f_use" >&6
 
-  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2f_use = x"yes"; then
 
-for ac_func in sincosf
+for ac_func in atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91383,10 +100019,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
-echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2f declaration" >&5
+echo $ECHO_N "checking for _atan2f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2f_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -91408,7 +100044,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _sincosf(0, 0, 0);
+ _atan2f(0, 0);
   ;
   return 0;
 }
@@ -91435,12 +100071,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosf_use=yes
+  glibcxx_cv_func__atan2f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosf_use=no
+glibcxx_cv_func__atan2f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -91453,12 +100089,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2f_use" >&6
 
-    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2f_use = x"yes"; then
 
-for ac_func in _sincosf
+for ac_func in _atan2f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91572,10 +100208,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finitef declaration" >&5
-echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsf declaration" >&5
+echo $ECHO_N "checking for fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -91601,7 +100237,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finitef(0);
+ fabsf(0);
   ;
   return 0;
 }
@@ -91628,12 +100264,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitef_use=yes
+  glibcxx_cv_func_fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitef_use=no
+glibcxx_cv_func_fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -91646,12 +100282,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsf_use" >&6
 
-  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsf_use = x"yes"; then
 
-for ac_func in finitef
+for ac_func in fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91759,10 +100395,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
-echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsf declaration" >&5
+echo $ECHO_N "checking for _fabsf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -91788,7 +100424,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finitef(0);
+ _fabsf(0);
   ;
   return 0;
 }
@@ -91815,12 +100451,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitef_use=yes
+  glibcxx_cv_func__fabsf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitef_use=no
+glibcxx_cv_func__fabsf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -91833,12 +100469,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsf_use" >&6
 
-    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsf_use = x"yes"; then
 
-for ac_func in _finitef
+for ac_func in _fabsf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -91952,21 +100588,22 @@ done
 
 
 
-    echo "$as_me:$LINENO: checking for long double trig functions" >&5
-echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fmodf declaration" >&5
+echo $ECHO_N "checking for fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -91976,7 +100613,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
+ fmodf(0, 0);
   ;
   return 0;
 }
@@ -92003,35 +100640,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_trig_use=yes
+  glibcxx_cv_func_fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_trig_use=no
+glibcxx_cv_func_fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
-  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodf_use" >&6
 
+  if test x$glibcxx_cv_func_fmodf_use = x"yes"; then
 
-for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
+for ac_func in fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -92138,9 +100770,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
-echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _fmodf declaration" >&5
+echo $ECHO_N "checking for _fmodf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodf_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -92162,7 +100796,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
+ _fmodf(0, 0);
   ;
   return 0;
 }
@@ -92189,12 +100823,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_trig_use=yes
+  glibcxx_cv_func__fmodf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_trig_use=no
+glibcxx_cv_func__fmodf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -92203,21 +100837,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-fi
-
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
-    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
-
-
-
-
-
 
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodf_use" >&6
 
+    if test x$glibcxx_cv_func__fmodf_use = x"yes"; then
 
-for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
+for ac_func in _fmodf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -92331,29 +100960,22 @@ done
 
 
 
-
-
-
-
-
-
-
-
-    echo "$as_me:$LINENO: checking for long double round functions" >&5
-echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
-  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for frexpf declaration" >&5
+echo $ECHO_N "checking for frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-    ac_ext=cc
+      ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-    cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
@@ -92363,7 +100985,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-ceill (0); floorl (0);
+ frexpf(0, 0);
   ;
   return 0;
 }
@@ -92390,28 +101012,30 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_long_double_round_use=yes
+  glibcxx_cv_func_frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_long_double_round_use=no
+glibcxx_cv_func_frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-    ac_ext=c
+      ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
-  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpf_use" >&6
 
+  if test x$glibcxx_cv_func_frexpf_use = x"yes"; then
 
-for ac_func in ceill floorl
+for ac_func in frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -92518,9 +101142,11 @@ fi
 done
 
   else
-    echo "$as_me:$LINENO: checking for _long double round functions" >&5
-echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
-    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
+
+  echo "$as_me:$LINENO: checking for _frexpf declaration" >&5
+echo $ECHO_N "checking for _frexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -92542,7 +101168,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
-_ceill (0); _floorl (0);
+ _frexpf(0, 0);
   ;
   return 0;
 }
@@ -92569,12 +101195,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__long_double_round_use=yes
+  glibcxx_cv_func__frexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__long_double_round_use=no
+glibcxx_cv_func__frexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -92583,14 +101209,16 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
+
 fi
 
-    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
-    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpf_use" >&6
 
+    if test x$glibcxx_cv_func__frexpf_use = x"yes"; then
 
-for ac_func in _ceill _floorl
+for ac_func in _frexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -92704,12 +101332,10 @@ done
 
 
 
-
-
-  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
-echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotf declaration" >&5
+echo $ECHO_N "checking for hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -92728,14 +101354,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isnanl(0);
+ hypotf(0, 0);
   ;
   return 0;
 }
@@ -92762,12 +101384,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isnanl_use=yes
+  glibcxx_cv_func_hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isnanl_use=no
+glibcxx_cv_func_hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -92780,12 +101402,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotf_use" >&6
 
-  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
+  if test x$glibcxx_cv_func_hypotf_use = x"yes"; then
 
-for ac_func in isnanl
+for ac_func in hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -92893,10 +101515,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
-echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotf declaration" >&5
+echo $ECHO_N "checking for _hypotf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotf_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -92915,14 +101537,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isnanl(0);
+ _hypotf(0, 0);
   ;
   return 0;
 }
@@ -92949,12 +101567,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isnanl_use=yes
+  glibcxx_cv_func__hypotf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isnanl_use=no
+glibcxx_cv_func__hypotf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -92967,12 +101585,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotf_use" >&6
 
-    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
+    if test x$glibcxx_cv_func__hypotf_use = x"yes"; then
 
-for ac_func in _isnanl
+for ac_func in _hypotf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -93086,10 +101704,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
-echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpf declaration" >&5
+echo $ECHO_N "checking for ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -93108,14 +101726,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- isinfl(0);
+ ldexpf(0, 0);
   ;
   return 0;
 }
@@ -93142,12 +101756,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_isinfl_use=yes
+  glibcxx_cv_func_ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_isinfl_use=no
+glibcxx_cv_func_ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -93160,12 +101774,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpf_use" >&6
 
-  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_ldexpf_use = x"yes"; then
 
-for ac_func in isinfl
+for ac_func in ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -93273,10 +101887,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
-echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _ldexpf declaration" >&5
+echo $ECHO_N "checking for _ldexpf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpf_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -93295,14 +101909,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _isinfl(0);
+ _ldexpf(0, 0);
   ;
   return 0;
 }
@@ -93329,12 +101939,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__isinfl_use=yes
+  glibcxx_cv_func__ldexpf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__isinfl_use=no
+glibcxx_cv_func__ldexpf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -93347,12 +101957,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpf_use" >&6
 
-    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__ldexpf_use = x"yes"; then
 
-for ac_func in _isinfl
+for ac_func in _ldexpf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -93466,10 +102076,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for copysignl declaration" >&5
-echo $ECHO_N "checking for copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func_copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for logf declaration" >&5
+echo $ECHO_N "checking for logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logf_use+set} != xset; then
+    if test "${glibcxx_cv_func_logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -93488,10 +102098,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- copysignl(0, 0);
+ logf(0);
   ;
   return 0;
 }
@@ -93518,12 +102132,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_copysignl_use=yes
+  glibcxx_cv_func_logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_copysignl_use=no
+glibcxx_cv_func_logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -93536,12 +102150,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logf_use" >&6
 
-  if test x$glibcxx_cv_func_copysignl_use = x"yes"; then
+  if test x$glibcxx_cv_func_logf_use = x"yes"; then
 
-for ac_func in copysignl
+for ac_func in logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -93649,10 +102263,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _copysignl declaration" >&5
-echo $ECHO_N "checking for _copysignl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__copysignl_use+set} != xset; then
-    if test "${glibcxx_cv_func__copysignl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _logf declaration" >&5
+echo $ECHO_N "checking for _logf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logf_use+set} != xset; then
+    if test "${glibcxx_cv_func__logf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -93671,10 +102285,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _copysignl(0, 0);
+ _logf(0);
   ;
   return 0;
 }
@@ -93701,12 +102319,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__copysignl_use=yes
+  glibcxx_cv_func__logf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__copysignl_use=no
+glibcxx_cv_func__logf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -93719,12 +102337,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__copysignl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__copysignl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logf_use" >&6
 
-    if test x$glibcxx_cv_func__copysignl_use = x"yes"; then
+    if test x$glibcxx_cv_func__logf_use = x"yes"; then
 
-for ac_func in _copysignl
+for ac_func in _logf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -93838,10 +102456,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
-echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for log10f declaration" >&5
+echo $ECHO_N "checking for log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -93860,10 +102478,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- atan2l(0, 0);
+ log10f(0);
   ;
   return 0;
 }
@@ -93890,12 +102512,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_atan2l_use=yes
+  glibcxx_cv_func_log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_atan2l_use=no
+glibcxx_cv_func_log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -93908,12 +102530,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10f_use" >&6
 
-  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
+  if test x$glibcxx_cv_func_log10f_use = x"yes"; then
 
-for ac_func in atan2l
+for ac_func in log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94021,10 +102643,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
-echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
-    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _log10f declaration" >&5
+echo $ECHO_N "checking for _log10f declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10f_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10f_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94043,10 +102665,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _atan2l(0, 0);
+ _log10f(0);
   ;
   return 0;
 }
@@ -94073,12 +102699,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__atan2l_use=yes
+  glibcxx_cv_func__log10f_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__atan2l_use=no
+glibcxx_cv_func__log10f_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -94091,12 +102717,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10f_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10f_use" >&6
 
-    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
+    if test x$glibcxx_cv_func__log10f_use = x"yes"; then
 
-for ac_func in _atan2l
+for ac_func in _log10f
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94210,10 +102836,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for expl declaration" >&5
-echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_expl_use+set} != xset; then
-    if test "${glibcxx_cv_func_expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modff declaration" >&5
+echo $ECHO_N "checking for modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modff_use+set} != xset; then
+    if test "${glibcxx_cv_func_modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94232,14 +102858,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- expl(0);
+ modff(0, 0);
   ;
   return 0;
 }
@@ -94266,12 +102888,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_expl_use=yes
+  glibcxx_cv_func_modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_expl_use=no
+glibcxx_cv_func_modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -94284,12 +102906,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modff_use" >&6
 
-  if test x$glibcxx_cv_func_expl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modff_use = x"yes"; then
 
-for ac_func in expl
+for ac_func in modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94397,10 +103019,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _expl declaration" >&5
-echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__expl_use+set} != xset; then
-    if test "${glibcxx_cv_func__expl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modff declaration" >&5
+echo $ECHO_N "checking for _modff declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modff_use+set} != xset; then
+    if test "${glibcxx_cv_func__modff_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94419,14 +103041,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _expl(0);
+ _modff(0, 0);
   ;
   return 0;
 }
@@ -94453,12 +103071,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__expl_use=yes
+  glibcxx_cv_func__modff_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__expl_use=no
+glibcxx_cv_func__modff_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -94471,12 +103089,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modff_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modff_use" >&6
 
-    if test x$glibcxx_cv_func__expl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modff_use = x"yes"; then
 
-for ac_func in _expl
+for ac_func in _modff
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94590,10 +103208,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
-echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for modf declaration" >&5
+echo $ECHO_N "checking for modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modf_use+set} != xset; then
+    if test "${glibcxx_cv_func_modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94612,14 +103230,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- fabsl(0);
+ modf(0, 0);
   ;
   return 0;
 }
@@ -94646,12 +103260,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fabsl_use=yes
+  glibcxx_cv_func_modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fabsl_use=no
+glibcxx_cv_func_modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -94664,12 +103278,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modf_use" >&6
 
-  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
+  if test x$glibcxx_cv_func_modf_use = x"yes"; then
 
-for ac_func in fabsl
+for ac_func in modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94777,10 +103391,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
-echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _modf declaration" >&5
+echo $ECHO_N "checking for _modf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modf_use+set} != xset; then
+    if test "${glibcxx_cv_func__modf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94799,14 +103413,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _fabsl(0);
+ _modf(0, 0);
   ;
   return 0;
 }
@@ -94833,12 +103443,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fabsl_use=yes
+  glibcxx_cv_func__modf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fabsl_use=no
+glibcxx_cv_func__modf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -94851,12 +103461,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modf_use" >&6
 
-    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
+    if test x$glibcxx_cv_func__modf_use = x"yes"; then
 
-for ac_func in _fabsl
+for ac_func in _modf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -94970,10 +103580,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
-echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for powf declaration" >&5
+echo $ECHO_N "checking for powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powf_use+set} != xset; then
+    if test "${glibcxx_cv_func_powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -94995,7 +103605,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- fmodl(0, 0);
+ powf(0, 0);
   ;
   return 0;
 }
@@ -95022,12 +103632,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_fmodl_use=yes
+  glibcxx_cv_func_powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_fmodl_use=no
+glibcxx_cv_func_powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95040,12 +103650,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powf_use" >&6
 
-  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+  if test x$glibcxx_cv_func_powf_use = x"yes"; then
 
-for ac_func in fmodl
+for ac_func in powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -95153,10 +103763,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
-echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
-    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _powf declaration" >&5
+echo $ECHO_N "checking for _powf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powf_use+set} != xset; then
+    if test "${glibcxx_cv_func__powf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -95178,7 +103788,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _fmodl(0, 0);
+ _powf(0, 0);
   ;
   return 0;
 }
@@ -95205,12 +103815,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__fmodl_use=yes
+  glibcxx_cv_func__powf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__fmodl_use=no
+glibcxx_cv_func__powf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95223,12 +103833,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powf_use" >&6
 
-    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
+    if test x$glibcxx_cv_func__powf_use = x"yes"; then
 
-for ac_func in _fmodl
+for ac_func in _powf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -95342,10 +103952,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
-echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sqrtf declaration" >&5
+echo $ECHO_N "checking for sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -95364,10 +103974,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- frexpl(0, 0);
+ sqrtf(0);
   ;
   return 0;
 }
@@ -95394,12 +104008,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_frexpl_use=yes
+  glibcxx_cv_func_sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_frexpl_use=no
+glibcxx_cv_func_sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95412,12 +104026,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtf_use" >&6
 
-  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sqrtf_use = x"yes"; then
 
-for ac_func in frexpl
+for ac_func in sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -95525,10 +104139,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
-echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sqrtf declaration" >&5
+echo $ECHO_N "checking for _sqrtf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -95547,10 +104161,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _frexpl(0, 0);
+ _sqrtf(0);
   ;
   return 0;
 }
@@ -95577,12 +104195,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__frexpl_use=yes
+  glibcxx_cv_func__sqrtf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__frexpl_use=no
+glibcxx_cv_func__sqrtf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95595,12 +104213,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtf_use" >&6
 
-    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sqrtf_use = x"yes"; then
 
-for ac_func in _frexpl
+for ac_func in _sqrtf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -95714,10 +104332,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
-echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for sincosf declaration" >&5
+echo $ECHO_N "checking for sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -95739,7 +104357,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- hypotl(0, 0);
+ sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -95766,12 +104384,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_hypotl_use=yes
+  glibcxx_cv_func_sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_hypotl_use=no
+glibcxx_cv_func_sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95784,12 +104402,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosf_use" >&6
 
-  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+  if test x$glibcxx_cv_func_sincosf_use = x"yes"; then
 
-for ac_func in hypotl
+for ac_func in sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -95897,10 +104515,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
-echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
-    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _sincosf declaration" >&5
+echo $ECHO_N "checking for _sincosf declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosf_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosf_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -95922,7 +104540,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _hypotl(0, 0);
+ _sincosf(0, 0, 0);
   ;
   return 0;
 }
@@ -95949,12 +104567,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__hypotl_use=yes
+  glibcxx_cv_func__sincosf_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__hypotl_use=no
+glibcxx_cv_func__sincosf_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -95967,12 +104585,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosf_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosf_use" >&6
 
-    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+    if test x$glibcxx_cv_func__sincosf_use = x"yes"; then
 
-for ac_func in _hypotl
+for ac_func in _sincosf
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -96086,10 +104704,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
-echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for finitef declaration" >&5
+echo $ECHO_N "checking for finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -96108,10 +104726,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- ldexpl(0, 0);
+ finitef(0);
   ;
   return 0;
 }
@@ -96138,12 +104760,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_ldexpl_use=yes
+  glibcxx_cv_func_finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_ldexpl_use=no
+glibcxx_cv_func_finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -96156,12 +104778,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitef_use" >&6
 
-  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
+  if test x$glibcxx_cv_func_finitef_use = x"yes"; then
 
-for ac_func in ldexpl
+for ac_func in finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -96269,10 +104891,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
-echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
-    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _finitef declaration" >&5
+echo $ECHO_N "checking for _finitef declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitef_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitef_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -96291,10 +104913,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _ldexpl(0, 0);
+ _finitef(0);
   ;
   return 0;
 }
@@ -96321,12 +104947,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__ldexpl_use=yes
+  glibcxx_cv_func__finitef_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__ldexpl_use=no
+glibcxx_cv_func__finitef_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -96339,12 +104965,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitef_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitef_use" >&6
 
-    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
+    if test x$glibcxx_cv_func__finitef_use = x"yes"; then
 
-for ac_func in _ldexpl
+for ac_func in _finitef
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -96458,36 +105084,31 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for logl declaration" >&5
-echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_logl_use+set} != xset; then
-    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for long double trig functions" >&5
+echo $ECHO_N "checking for long double trig functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- logl(0);
+acosl (0); asinl (0); atanl (0); cosl (0); sinl (0); tanl (0); coshl (0); sinhl (0); tanhl (0);
   ;
   return 0;
 }
@@ -96514,30 +105135,35 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_logl_use=yes
+  glibcxx_cv_func_long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_logl_use=no
+glibcxx_cv_func_long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_trig_use" >&6
+  if test x$glibcxx_cv_func_long_double_trig_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in logl
+
+
+
+
+
+
+
+for ac_func in acosl asinl atanl cosl sinl tanl coshl sinhl tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -96644,11 +105270,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _logl declaration" >&5
-echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__logl_use+set} != xset; then
-    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double trig functions" >&5
+echo $ECHO_N "checking for _long double trig functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_trig_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -96667,14 +105291,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _logl(0);
+_acosl (0); _asinl (0); _atanl (0); _cosl (0); _sinl (0); _tanl (0); _coshl (0); _sinhl (0); _tanhl (0);
   ;
   return 0;
 }
@@ -96701,12 +105321,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__logl_use=yes
+  glibcxx_cv_func__long_double_trig_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__logl_use=no
+glibcxx_cv_func__long_double_trig_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -96715,16 +105335,21 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_trig_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_trig_use" >&6
+    if test x$glibcxx_cv_func__long_double_trig_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in _logl
+
+
+
+
+
+
+
+for ac_func in _acosl _asinl _atanl _cosl _sinl _tanl _coshl _sinhl _tanhl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -96838,36 +105463,39 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for log10l declaration" >&5
-echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+
+
+
+
+
+
+
+
+    echo "$as_me:$LINENO: checking for long double round functions" >&5
+echo $ECHO_N "checking for long double round functions... $ECHO_C" >&6
+  if test "${glibcxx_cv_func_long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
 
 
-      ac_ext=cc
+    ac_ext=cc
 ac_cpp='$CXXCPP $CPPFLAGS'
 ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-      cat >conftest.$ac_ext <<_ACEOF
+    cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- log10l(0);
+ceill (0); floorl (0);
   ;
   return 0;
 }
@@ -96894,30 +105522,28 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_log10l_use=yes
+  glibcxx_cv_func_long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_log10l_use=no
+glibcxx_cv_func_long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      ac_ext=c
+    ac_ext=c
 ac_cpp='$CPP $CPPFLAGS'
 ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_long_double_round_use" >&6
+  if test x$glibcxx_cv_func_long_double_round_use = x"yes"; then
 
-  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in log10l
+for ac_func in ceill floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97024,11 +105650,9 @@ fi
 done
 
   else
-
-  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
-echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
-    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+    echo "$as_me:$LINENO: checking for _long double round functions" >&5
+echo $ECHO_N "checking for _long double round functions... $ECHO_C" >&6
+    if test "${glibcxx_cv_func__long_double_round_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97047,14 +105671,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _log10l(0);
+_ceill (0); _floorl (0);
   ;
   return 0;
 }
@@ -97081,12 +105701,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__log10l_use=yes
+  glibcxx_cv_func__long_double_round_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__log10l_use=no
+glibcxx_cv_func__long_double_round_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -97095,16 +105715,14 @@ ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
 ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
 ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-
 fi
 
-  fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
+    echo "$as_me:$LINENO: result: $glibcxx_cv_func__long_double_round_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__long_double_round_use" >&6
+    if test x$glibcxx_cv_func__long_double_round_use = x"yes"; then
 
-    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-for ac_func in _log10l
+for ac_func in _ceill _floorl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97218,10 +105836,12 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for modfl declaration" >&5
-echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
+
+
+  echo "$as_me:$LINENO: checking for isnanl declaration" >&5
+echo $ECHO_N "checking for isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97240,10 +105860,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- modfl(0, 0);
+ isnanl(0);
   ;
   return 0;
 }
@@ -97270,12 +105894,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_modfl_use=yes
+  glibcxx_cv_func_isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_modfl_use=no
+glibcxx_cv_func_isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -97288,12 +105912,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isnanl_use" >&6
 
-  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
+  if test x$glibcxx_cv_func_isnanl_use = x"yes"; then
 
-for ac_func in modfl
+for ac_func in isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97401,10 +106025,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
-echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
-    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isnanl declaration" >&5
+echo $ECHO_N "checking for _isnanl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isnanl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isnanl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97423,10 +106047,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _modfl(0, 0);
+ _isnanl(0);
   ;
   return 0;
 }
@@ -97453,12 +106081,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__modfl_use=yes
+  glibcxx_cv_func__isnanl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__modfl_use=no
+glibcxx_cv_func__isnanl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -97471,12 +106099,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isnanl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isnanl_use" >&6
 
-    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
+    if test x$glibcxx_cv_func__isnanl_use = x"yes"; then
 
-for ac_func in _modfl
+for ac_func in _isnanl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97590,10 +106218,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for powl declaration" >&5
-echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_powl_use+set} != xset; then
-    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for isinfl declaration" >&5
+echo $ECHO_N "checking for isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97612,10 +106240,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- powl(0, 0);
+ isinfl(0);
   ;
   return 0;
 }
@@ -97642,12 +106274,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_powl_use=yes
+  glibcxx_cv_func_isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_powl_use=no
+glibcxx_cv_func_isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -97660,12 +106292,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_isinfl_use" >&6
 
-  if test x$glibcxx_cv_func_powl_use = x"yes"; then
+  if test x$glibcxx_cv_func_isinfl_use = x"yes"; then
 
-for ac_func in powl
+for ac_func in isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97773,10 +106405,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _powl declaration" >&5
-echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__powl_use+set} != xset; then
-    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _isinfl declaration" >&5
+echo $ECHO_N "checking for _isinfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__isinfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__isinfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97795,10 +106427,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _powl(0, 0);
+ _isinfl(0);
   ;
   return 0;
 }
@@ -97825,12 +106461,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__powl_use=yes
+  glibcxx_cv_func__isinfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__powl_use=no
+glibcxx_cv_func__isinfl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -97843,12 +106479,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__isinfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__isinfl_use" >&6
 
-    if test x$glibcxx_cv_func__powl_use = x"yes"; then
+    if test x$glibcxx_cv_func__isinfl_use = x"yes"; then
 
-for ac_func in _powl
+for ac_func in _isinfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -97962,10 +106598,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
-echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for atan2l declaration" >&5
+echo $ECHO_N "checking for atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func_atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -97984,14 +106620,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- sqrtl(0);
+ atan2l(0, 0);
   ;
   return 0;
 }
@@ -98018,12 +106650,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sqrtl_use=yes
+  glibcxx_cv_func_atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sqrtl_use=no
+glibcxx_cv_func_atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98036,12 +106668,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_atan2l_use" >&6
 
-  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
+  if test x$glibcxx_cv_func_atan2l_use = x"yes"; then
 
-for ac_func in sqrtl
+for ac_func in atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -98149,10 +106781,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
-echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _atan2l declaration" >&5
+echo $ECHO_N "checking for _atan2l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__atan2l_use+set} != xset; then
+    if test "${glibcxx_cv_func__atan2l_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -98171,14 +106803,10 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
-                     #ifdef HAVE_IEEEFP_H
-                     #include <ieeefp.h>
-                     #endif
-
 int
 main ()
 {
- _sqrtl(0);
+ _atan2l(0, 0);
   ;
   return 0;
 }
@@ -98205,12 +106833,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sqrtl_use=yes
+  glibcxx_cv_func__atan2l_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sqrtl_use=no
+glibcxx_cv_func__atan2l_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98223,12 +106851,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__atan2l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__atan2l_use" >&6
 
-    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
+    if test x$glibcxx_cv_func__atan2l_use = x"yes"; then
 
-for ac_func in _sqrtl
+for ac_func in _atan2l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -98342,10 +106970,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
-echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for expl declaration" >&5
+echo $ECHO_N "checking for expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_expl_use+set} != xset; then
+    if test "${glibcxx_cv_func_expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -98364,10 +106992,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- sincosl(0, 0, 0);
+ expl(0);
   ;
   return 0;
 }
@@ -98394,12 +107026,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_sincosl_use=yes
+  glibcxx_cv_func_expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_sincosl_use=no
+glibcxx_cv_func_expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98412,12 +107044,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_expl_use" >&6
 
-  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
+  if test x$glibcxx_cv_func_expl_use = x"yes"; then
 
-for ac_func in sincosl
+for ac_func in expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -98525,10 +107157,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
-echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
-    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _expl declaration" >&5
+echo $ECHO_N "checking for _expl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__expl_use+set} != xset; then
+    if test "${glibcxx_cv_func__expl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -98547,10 +107179,14 @@ cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
 #include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
 int
 main ()
 {
- _sincosl(0, 0, 0);
+ _expl(0);
   ;
   return 0;
 }
@@ -98577,12 +107213,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__sincosl_use=yes
+  glibcxx_cv_func__expl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__sincosl_use=no
+glibcxx_cv_func__expl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98595,12 +107231,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__expl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__expl_use" >&6
 
-    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
+    if test x$glibcxx_cv_func__expl_use = x"yes"; then
 
-for ac_func in _sincosl
+for ac_func in _expl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -98714,10 +107350,10 @@ done
 
 
 
-  echo "$as_me:$LINENO: checking for finitel declaration" >&5
-echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for fabsl declaration" >&5
+echo $ECHO_N "checking for fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -98743,7 +107379,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- finitel(0);
+ fabsl(0);
   ;
   return 0;
 }
@@ -98770,12 +107406,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_finitel_use=yes
+  glibcxx_cv_func_fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_finitel_use=no
+glibcxx_cv_func_fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98788,12 +107424,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fabsl_use" >&6
 
-  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
+  if test x$glibcxx_cv_func_fabsl_use = x"yes"; then
 
-for ac_func in finitel
+for ac_func in fabsl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -98901,10 +107537,10 @@ done
 
   else
 
-  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
-echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
-    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _fabsl declaration" >&5
+echo $ECHO_N "checking for _fabsl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fabsl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fabsl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -98930,7 +107566,7 @@ cat >>conftest.$ac_ext <<_ACEOF
 int
 main ()
 {
- _finitel(0);
+ _fabsl(0);
   ;
   return 0;
 }
@@ -98957,12 +107593,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func__finitel_use=yes
+  glibcxx_cv_func__fabsl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func__finitel_use=no
+glibcxx_cv_func__fabsl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -98975,12 +107611,201 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fabsl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fabsl_use" >&6
 
-    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
+    if test x$glibcxx_cv_func__fabsl_use = x"yes"; then
 
-for ac_func in _finitel
+for ac_func in _fabsl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
+
+int
+main ()
+{
+return f != $ac_func;
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  eval "$as_ac_var=yes"
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+eval "$as_ac_var=no"
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
+
+fi
+done
+
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for fmodl declaration" >&5
+echo $ECHO_N "checking for fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func_fmodl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ fmodl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_fmodl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_fmodl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_fmodl_use" >&6
+
+  if test x$glibcxx_cv_func_fmodl_use = x"yes"; then
+
+for ac_func in fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99086,92 +107911,84 @@ _ACEOF
 fi
 done
 
-    fi
-  fi
-
-
-
+  else
 
+  echo "$as_me:$LINENO: checking for _fmodl declaration" >&5
+echo $ECHO_N "checking for _fmodl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__fmodl_use+set} != xset; then
+    if test "${glibcxx_cv_func__fmodl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
-  LIBS="$ac_save_LIBS"
-  CXXFLAGS="$ac_save_CXXFLAGS"
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <math.h>
 int
 main ()
 {
-main ();
+ _fmodl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func__fmodl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func__fmodl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__fmodl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__fmodl_use" >&6
+
+    if test x$glibcxx_cv_func__fmodl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in _fmodl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99274,124 +108091,93 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+    fi
+  fi
 
 
-for ac_func in __signbit
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
+
+
+
+
+  echo "$as_me:$LINENO: checking for frexpl declaration" >&5
+echo $ECHO_N "checking for frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_frexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
+#include <math.h>
 int
 main ()
 {
-return f != $ac_func;
+ frexpl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  glibcxx_cv_func_frexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
+glibcxx_cv_func_frexpl_use=no
 fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
-done
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_frexpl_use" >&6
 
+  if test x$glibcxx_cv_func_frexpl_use = x"yes"; then
 
-for ac_func in __signbitf
+for ac_func in frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99494,15 +108280,87 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _frexpl declaration" >&5
+echo $ECHO_N "checking for _frexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__frexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__frexpl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _frexpl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__frexpl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__frexpl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
 
-for ac_func in __signbitl
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__frexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__frexpl_use" >&6
+
+    if test x$glibcxx_cv_func__frexpl_use = x"yes"; then
+
+for ac_func in _frexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99605,29 +108463,21 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
+    fi
   fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
 
 
 
-  ac_test_CXXFLAGS="${CXXFLAGS+set}"
-  ac_save_CXXFLAGS="$CXXFLAGS"
-  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
 
 
-  echo "$as_me:$LINENO: checking for strtold declaration" >&5
-echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for hypotl declaration" >&5
+echo $ECHO_N "checking for hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func_hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -99645,11 +108495,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
 int
 main ()
 {
- strtold(0, 0);
+ hypotl(0, 0);
   ;
   return 0;
 }
@@ -99676,12 +108526,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtold_use=yes
+  glibcxx_cv_func_hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtold_use=no
+glibcxx_cv_func_hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -99694,11 +108544,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
-  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_hypotl_use" >&6
 
-for ac_func in strtold
+  if test x$glibcxx_cv_func_hypotl_use = x"yes"; then
+
+for ac_func in hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99804,16 +108655,12 @@ _ACEOF
 fi
 done
 
-  fi
-
-
-
-
+  else
 
-  echo "$as_me:$LINENO: checking for strtof declaration" >&5
-echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
-  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
-    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo "$as_me:$LINENO: checking for _hypotl declaration" >&5
+echo $ECHO_N "checking for _hypotl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__hypotl_use+set} != xset; then
+    if test "${glibcxx_cv_func__hypotl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
@@ -99831,11 +108678,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-#include <stdlib.h>
+#include <math.h>
 int
 main ()
 {
- strtof(0, 0);
+ _hypotl(0, 0);
   ;
   return 0;
 }
@@ -99862,12 +108709,12 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  glibcxx_cv_func_strtof_use=yes
+  glibcxx_cv_func__hypotl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-glibcxx_cv_func_strtof_use=no
+glibcxx_cv_func__hypotl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
       ac_ext=c
@@ -99880,11 +108727,12 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 fi
 
   fi
-  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
-echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
-  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__hypotl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__hypotl_use" >&6
 
-for ac_func in strtof
+    if test x$glibcxx_cv_func__hypotl_use = x"yes"; then
+
+for ac_func in _hypotl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -99990,201 +108838,28 @@ _ACEOF
 fi
 done
 
+    fi
   fi
 
 
 
 
 
-  CXXFLAGS="$ac_save_CXXFLAGS"
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_RANDOM_TR1 1
-_ACEOF
-
-
-    # For iconv support.
-
-
-
-
-
-          am_save_CPPFLAGS="$CPPFLAGS"
-
-  for element in $INCICONV; do
-    haveit=
-    for x in $CPPFLAGS; do
-
-  acl_save_prefix="$prefix"
-  prefix="$acl_final_prefix"
-  acl_save_exec_prefix="$exec_prefix"
-  exec_prefix="$acl_final_exec_prefix"
-  eval x=\"$x\"
-  exec_prefix="$acl_save_exec_prefix"
-  prefix="$acl_save_prefix"
-
-      if test "X$x" = "X$element"; then
-        haveit=yes
-        break
-      fi
-    done
-    if test -z "$haveit"; then
-      CPPFLAGS="${CPPFLAGS}${CPPFLAGS:+ }$element"
-    fi
-  done
-
 
-  echo "$as_me:$LINENO: checking for iconv" >&5
-echo $ECHO_N "checking for iconv... $ECHO_C" >&6
-if test "${am_cv_func_iconv+set}" = set; then
+  echo "$as_me:$LINENO: checking for ldexpl declaration" >&5
+echo $ECHO_N "checking for ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func_ldexpl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
 
-    am_cv_func_iconv="no, consider installing GNU libiconv"
-    am_cv_lib_iconv=no
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-#include <iconv.h>
-int
-main ()
-{
-iconv_t cd = iconv_open("","");
-       iconv(cd,NULL,NULL,NULL,NULL);
-       iconv_close(cd);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  am_cv_func_iconv=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$am_cv_func_iconv" != yes; then
-      am_save_LIBS="$LIBS"
-      LIBS="$LIBS $LIBICONV"
-      if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-#include <stdlib.h>
-#include <iconv.h>
-int
-main ()
-{
-iconv_t cd = iconv_open("","");
-         iconv(cd,NULL,NULL,NULL,NULL);
-         iconv_close(cd);
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  am_cv_lib_iconv=yes
-        am_cv_func_iconv=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-      LIBS="$am_save_LIBS"
-    fi
-
-fi
-echo "$as_me:$LINENO: result: $am_cv_func_iconv" >&5
-echo "${ECHO_T}$am_cv_func_iconv" >&6
-  if test "$am_cv_func_iconv" = yes; then
-
-cat >>confdefs.h <<\_ACEOF
-#define HAVE_ICONV 1
-_ACEOF
-
-  fi
-  if test "$am_cv_lib_iconv" = yes; then
-    echo "$as_me:$LINENO: checking how to link with libiconv" >&5
-echo $ECHO_N "checking how to link with libiconv... $ECHO_C" >&6
-    echo "$as_me:$LINENO: result: $LIBICONV" >&5
-echo "${ECHO_T}$LIBICONV" >&6
-  else
-            CPPFLAGS="$am_save_CPPFLAGS"
-    LIBICONV=
-    LTLIBICONV=
-  fi
-
 
 
-  if test "$am_cv_func_iconv" = yes; then
-    echo "$as_me:$LINENO: checking for iconv declaration" >&5
-echo $ECHO_N "checking for iconv declaration... $ECHO_C" >&6
-    if test "${am_cv_proto_iconv+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
       cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
@@ -100192,23 +108867,11 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-#include <stdlib.h>
-#include <iconv.h>
-extern
-#ifdef __cplusplus
-"C"
-#endif
-#if defined(__STDC__) || defined(__cplusplus)
-size_t iconv (iconv_t cd, char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);
-#else
-size_t iconv();
-#endif
-
+#include <math.h>
 int
 main ()
 {
-
+ ldexpl(0, 0);
   ;
   return 0;
 }
@@ -100222,7 +108885,7 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
@@ -100235,108 +108898,38 @@ if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  am_cv_proto_iconv_arg1=""
+  glibcxx_cv_func_ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-am_cv_proto_iconv_arg1="const"
+glibcxx_cv_func_ldexpl_use=no
 fi
 rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
-      am_cv_proto_iconv="extern size_t iconv (iconv_t cd, $am_cv_proto_iconv_arg1 char * *inbuf, size_t *inbytesleft, char * *outbuf, size_t *outbytesleft);"
-fi
-
-    am_cv_proto_iconv=`echo "$am_cv_proto_iconv" | tr -s ' ' | sed -e 's/( /(/'`
-    echo "$as_me:$LINENO: result: ${ac_t:-
-         }$am_cv_proto_iconv" >&5
-echo "${ECHO_T}${ac_t:-
-         }$am_cv_proto_iconv" >&6
-
-cat >>confdefs.h <<_ACEOF
-#define ICONV_CONST $am_cv_proto_iconv_arg1
-_ACEOF
-
-  fi
-
-    ;;
-  *-mingw32*)
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOLD 1
-_ACEOF
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
-
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
 
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
+fi
 
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
   fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_ldexpl_use" >&6
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
+  if test x$glibcxx_cv_func_ldexpl_use = x"yes"; then
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
+for ac_func in ldexpl
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -100347,13 +108940,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- two();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -100380,139 +109007,104 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_gcsections=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
-
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
-
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
+fi
+done
 
+  else
 
+  echo "$as_me:$LINENO: checking for _ldexpl declaration" >&5
+echo $ECHO_N "checking for _ldexpl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__ldexpl_use+set} != xset; then
+    if test "${glibcxx_cv_func__ldexpl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <math.h>
 int
 main ()
 {
-main ();
+ _ldexpl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func__ldexpl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func__ldexpl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__ldexpl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__ldexpl_use" >&6
+
+    if test x$glibcxx_cv_func__ldexpl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in _ldexpl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -100615,14 +109207,97 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for logl declaration" >&5
+echo $ECHO_N "checking for logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_logl_use+set} != xset; then
+    if test "${glibcxx_cv_func_logl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ logl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_logl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_logl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_logl_use" >&6
 
+  if test x$glibcxx_cv_func_logl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -100725,14 +109400,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _logl declaration" >&5
+echo $ECHO_N "checking for _logl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__logl_use+set} != xset; then
+    if test "${glibcxx_cv_func__logl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _logl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__logl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__logl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__logl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__logl_use" >&6
 
+    if test x$glibcxx_cv_func__logl_use = x"yes"; then
 
-for ac_func in __signbitf
+for ac_func in _logl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -100835,15 +109587,97 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for log10l declaration" >&5
+echo $ECHO_N "checking for log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func_log10l_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ log10l(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_log10l_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_log10l_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_log10l_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+  if test x$glibcxx_cv_func_log10l_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in log10l
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -100946,92 +109780,99 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
+  else
 
-    ;;
-  *-netbsd*)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+  echo "$as_me:$LINENO: checking for _log10l declaration" >&5
+echo $ECHO_N "checking for _log10l declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__log10l_use+set} != xset; then
+    if test "${glibcxx_cv_func__log10l_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
 
 
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
-    fi
-  fi
+int
+main ()
+{
+ _log10l(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__log10l_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
 
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+glibcxx_cv_func__log10l_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
 
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
+fi
 
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
   fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__log10l_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__log10l_use" >&6
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
+    if test x$glibcxx_cv_func__log10l_use = x"yes"; then
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
+for ac_func in _log10l
+do
+as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
+echo "$as_me:$LINENO: checking for $ac_func" >&5
+echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
+if eval "test \"\${$as_ac_var+set}\" = set"; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+  if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -101042,13 +109883,47 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
+/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
+   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
+#define $ac_func innocuous_$ac_func
+
+/* System header to define __stub macros and hopefully few prototypes,
+    which can conflict with char $ac_func (); below.
+    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
+    <limits.h> exists even on freestanding compilers.  */
+
+#ifdef __STDC__
+# include <limits.h>
+#else
+# include <assert.h>
+#endif
+
+#undef $ac_func
+
+/* Override any gcc2 internal prototype to avoid an error.  */
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+/* We use char because int might match the return type of a gcc2
+   builtin and then its argument prototype would still apply.  */
+char $ac_func ();
+/* The GNU C library defines this for functions which it implements
+    to always fail with ENOSYS.  Some functions are actually named
+    something starting with __ and the normal name is an alias.  */
+#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
+choke me
+#else
+char (*f) () = $ac_func;
+#endif
+#ifdef __cplusplus
+}
+#endif
 
 int
 main ()
 {
- two();
+return f != $ac_func;
   ;
   return 0;
 }
@@ -101075,58 +109950,27 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  eval "$as_ac_var=yes"
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_gcsections=no
+eval "$as_ac_var=no"
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
+fi
+echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
+echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
+if test `eval echo '${'$as_ac_var'}'` = yes; then
+  cat >>confdefs.h <<_ACEOF
+#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+_ACEOF
 
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
+fi
+done
 
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
     fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
-
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
 
 
@@ -101134,80 +109978,82 @@ echo "${ECHO_T}$ac_ld_relro" >&6
 
 
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
+  echo "$as_me:$LINENO: checking for modfl declaration" >&5
+echo $ECHO_N "checking for modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func_modfl_use+set}" = set; then
   echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
-
+#include <math.h>
 int
 main ()
 {
-main ();
+ modfl(0, 0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func_modfl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func_modfl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_modfl_use" >&6
+
+  if test x$glibcxx_cv_func_modfl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -101310,14 +110156,87 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _modfl declaration" >&5
+echo $ECHO_N "checking for _modfl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__modfl_use+set} != xset; then
+    if test "${glibcxx_cv_func__modfl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _modfl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__modfl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__modfl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__modfl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__modfl_use" >&6
 
+    if test x$glibcxx_cv_func__modfl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in _modfl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -101420,14 +110339,93 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+    fi
+  fi
+
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for powl declaration" >&5
+echo $ECHO_N "checking for powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_powl_use+set} != xset; then
+    if test "${glibcxx_cv_func_powl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ powl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_powl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_powl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_powl_use" >&6
 
+  if test x$glibcxx_cv_func_powl_use = x"yes"; then
 
-for ac_func in __signbitf
+for ac_func in powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -101530,15 +110528,87 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _powl declaration" >&5
+echo $ECHO_N "checking for _powl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__powl_use+set} != xset; then
+    if test "${glibcxx_cv_func__powl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _powl(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__powl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__powl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__powl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__powl_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    if test x$glibcxx_cv_func__powl_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in _powl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -101641,322 +110711,97 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_FREXPF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOTF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
-_ACEOF
-
-    if test x"long_double_math_on_this_cpu" = x"yes"; then
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITEL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINFL 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANL 1
-_ACEOF
-
-    fi
-    ;;
-  *-netware)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
     fi
   fi
 
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
-
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
 
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
 
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
-  fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
 
-int
-main ()
-{
- two();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  echo "$as_me:$LINENO: checking for sqrtl declaration" >&5
+echo $ECHO_N "checking for sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sqrtl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_gcsections=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
-
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
-
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
-
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
-
 
 
 
-
-
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-main ();
+ sqrtl(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func_sqrtl_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func_sqrtl_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sqrtl_use" >&6
+
+  if test x$glibcxx_cv_func_sqrtl_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102059,14 +110904,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _sqrtl declaration" >&5
+echo $ECHO_N "checking for _sqrtl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sqrtl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sqrtl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _sqrtl(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sqrtl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__sqrtl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sqrtl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sqrtl_use" >&6
 
+    if test x$glibcxx_cv_func__sqrtl_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in _sqrtl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102169,14 +111091,93 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+    fi
+  fi
+
 
 
-for ac_func in __signbitf
+
+
+
+  echo "$as_me:$LINENO: checking for sincosl declaration" >&5
+echo $ECHO_N "checking for sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func_sincosl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ sincosl(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_sincosl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_sincosl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_sincosl_use" >&6
+
+  if test x$glibcxx_cv_func_sincosl_use = x"yes"; then
+
+for ac_func in sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102279,15 +111280,87 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _sincosl declaration" >&5
+echo $ECHO_N "checking for _sincosl declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__sincosl_use+set} != xset; then
+    if test "${glibcxx_cv_func__sincosl_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+int
+main ()
+{
+ _sincosl(0, 0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__sincosl_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__sincosl_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__sincosl_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__sincosl_use" >&6
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    if test x$glibcxx_cv_func__sincosl_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in _sincosl
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102390,280 +111463,97 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
-  fi
-
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
-  fi
-
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISINF 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
-
-    ;;
-  *-qnx6.1* | *-qnx6.2*)
-    SECTION_FLAGS='-ffunction-sections -fdata-sections'
-
-
-  # If we're not using GNU ld, then there's no point in even trying these
-  # tests.  Check for that first.  We should have already tested for gld
-  # by now (in libtool), but require it now just to be safe...
-  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
-  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
-
-
-
-  # The name set by libtool depends on the version of libtool.  Shame on us
-  # for depending on an impl detail, but c'est la vie.  Older versions used
-  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
-  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
-  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
-  # set (hence we're using an older libtool), then set it.
-  if test x${with_gnu_ld+set} != xset; then
-    if test x${ac_cv_prog_gnu_ld+set} != xset; then
-      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
-      with_gnu_ld=no
-    else
-      with_gnu_ld=$ac_cv_prog_gnu_ld
     fi
   fi
 
-  # Start by getting the version number.  I think the libtool test already
-  # does some of this, but throws away the result.
-  glibcxx_ld_is_gold=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld version" >&5
-echo $ECHO_N "checking for ld version... $ECHO_C" >&6
-
-    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
-      glibcxx_ld_is_gold=yes
-    fi
-    ldver=`$LD --version 2>/dev/null | head -1 | \
-           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
 
-    glibcxx_gnu_ld_version=`echo $ldver | \
-           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
-    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
-echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
-  fi
 
-  # Set --gc-sections.
-  glibcxx_have_gc_sections=no
-  if test "$glibcxx_ld_is_gold" = "yes"; then
-    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
-      glibcxx_have_gc_sections=yes
-    fi
-  else
-    glibcxx_gcsections_min_ld=21602
-    if test x"$with_gnu_ld" = x"yes" &&
-       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
-      glibcxx_have_gc_sections=yes
-    fi
-  fi
-  if test "$glibcxx_have_gc_sections" = "yes"; then
-    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
-    # NB: This flag only works reliably after 2.16.1. Configure tests
-    # for this are difficult, so hard wire a value that should work.
 
-    ac_test_CFLAGS="${CFLAGS+set}"
-    ac_save_CFLAGS="$CFLAGS"
-    CFLAGS='-Wl,--gc-sections'
 
-    # Check for -Wl,--gc-sections
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
-echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
-    if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
-_ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
- int one(void) { return 1; }
-     int two(void) { return 2; }
 
-int
-main ()
-{
- two();
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_gcsections=yes
+  echo "$as_me:$LINENO: checking for finitel declaration" >&5
+echo $ECHO_N "checking for finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func_finitel_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
 else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
-
-ac_gcsections=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-    if test "$ac_gcsections" = "yes"; then
-      rm -f conftest.c
-      touch conftest.c
-      if $CC -c conftest.c; then
-       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
-          grep "Warning: gc-sections option ignored" > /dev/null; then
-         ac_gcsections=no
-       fi
-      fi
-      rm -f conftest.c conftest.o conftest
-    fi
-    if test "$ac_gcsections" = "yes"; then
-      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
-    fi
-    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
-echo "${ECHO_T}$ac_gcsections" >&6
-
-    if test "$ac_test_CFLAGS" = set; then
-      CFLAGS="$ac_save_CFLAGS"
-    else
-      # this is the suspicious part
-      CFLAGS=''
-    fi
-  fi
-
-  # Set -z,relro.
-  # Note this is only for shared objects.
-  ac_ld_relro=no
-  if test x"$with_gnu_ld" = x"yes"; then
-    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
-echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
-    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
-    if test -n "$cxx_z_relo"; then
-      OPT_LDFLAGS="-Wl,-z,relro"
-      ac_ld_relro=yes
-    fi
-    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
-echo "${ECHO_T}$ac_ld_relro" >&6
-  fi
-
-  # Set linker optimization flags.
-  if test x"$with_gnu_ld" = x"yes"; then
-    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
-
-
 
 
 
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
 
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
+      cat >conftest.$ac_ext <<_ACEOF
 /* confdefs.h.  */
 _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
 
 int
 main ()
 {
-main ();
+ finitel(0);
   ;
   return 0;
 }
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
   ac_status=$?
   grep -v '^ *+' conftest.er1 >conftest.err
   rm -f conftest.er1
   cat conftest.err >&5
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
+        { ac_try='test -z "$ac_cxx_werror_flag"
                         || test ! -s conftest.err'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
+        { ac_try='test -s conftest.$ac_objext'
   { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
   (eval $ac_try) 2>&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
+  glibcxx_cv_func_finitel_use=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
+glibcxx_cv_func_finitel_use=no
 fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
-  LIBS="-lm $LIBS"
 
 fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_finitel_use" >&6
+
+  if test x$glibcxx_cv_func_finitel_use = x"yes"; then
 
-for ac_func in copysignf
+for ac_func in finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102766,14 +111656,91 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
 fi
 done
 
+  else
+
+  echo "$as_me:$LINENO: checking for _finitel declaration" >&5
+echo $ECHO_N "checking for _finitel declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func__finitel_use+set} != xset; then
+    if test "${glibcxx_cv_func__finitel_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <math.h>
+                     #ifdef HAVE_IEEEFP_H
+                     #include <ieeefp.h>
+                     #endif
+
+int
+main ()
+{
+ _finitel(0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func__finitel_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func__finitel_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
+
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func__finitel_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func__finitel_use" >&6
 
+    if test x$glibcxx_cv_func__finitel_use = x"yes"; then
 
-for ac_func in __signbit
+for ac_func in _finitel
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102876,14 +111843,100 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
 fi
 done
 
+    fi
+  fi
+
+
+
+
+
+  LIBS="$ac_save_LIBS"
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+
+  ac_test_CXXFLAGS="${CXXFLAGS+set}"
+  ac_save_CXXFLAGS="$CXXFLAGS"
+  CXXFLAGS='-fno-builtin -D_GNU_SOURCE'
+
+
+  echo "$as_me:$LINENO: checking for strtold declaration" >&5
+echo $ECHO_N "checking for strtold declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtold_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtold_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+ strtold(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_strtold_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_strtold_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
 
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtold_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtold_use" >&6
+  if test x$glibcxx_cv_func_strtold_use = x"yes"; then
 
-for ac_func in __signbitf
+for ac_func in strtold
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -102986,15 +112039,90 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
 fi
 done
 
+  fi
+
+
+
+
+
+  echo "$as_me:$LINENO: checking for strtof declaration" >&5
+echo $ECHO_N "checking for strtof declaration... $ECHO_C" >&6
+  if test x${glibcxx_cv_func_strtof_use+set} != xset; then
+    if test "${glibcxx_cv_func_strtof_use+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+
+
+      ac_ext=cc
+ac_cpp='$CXXCPP $CPPFLAGS'
+ac_compile='$CXX -c $CXXFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CXX -o conftest$ac_exeext $CXXFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
+
+      cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+#include <stdlib.h>
+int
+main ()
+{
+ strtof(0, 0);
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_cxx_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_func_strtof_use=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_func_strtof_use=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+      ac_ext=c
+ac_cpp='$CPP $CPPFLAGS'
+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
+ac_compiler_gnu=$ac_cv_c_compiler_gnu
+
+
+fi
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+  fi
+  echo "$as_me:$LINENO: result: $glibcxx_cv_func_strtof_use" >&5
+echo "${ECHO_T}$glibcxx_cv_func_strtof_use" >&6
+  if test x$glibcxx_cv_func_strtof_use = x"yes"; then
 
-for ac_func in __signbitl
+for ac_func in strtof
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
@@ -103097,71 +112225,240 @@ if test `eval echo '${'$as_ac_var'}'` = yes; then
 #define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
 fi
 done
 
   fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
+
+
+
+
+  CXXFLAGS="$ac_save_CXXFLAGS"
+
+    ;;
+  *-netbsd*)
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
   fi
 
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSF 1
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
 _ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSL 1
+int
+main ()
+{
+ two();
+  ;
+  return 0;
+}
 _ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_gcsections=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_gcsections=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
+
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
+
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHF 1
+#define HAVE_FINITEF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COSHL 1
+#define HAVE_FINITE 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGF 1
+#define HAVE_FREXPF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOGL 1
+#define HAVE_HYPOTF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10F 1
+#define HAVE_ISINF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_LOG10L 1
+#define HAVE_ISINFF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINF 1
+#define HAVE_ISNAN 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINL 1
+#define HAVE_ISNANF 1
 _ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHF 1
+    if test x"long_double_math_on_this_cpu" = x"yes"; then
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITEL 1
 _ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_SINHL 1
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISINFL 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_ISNANL 1
 _ACEOF
 
+    fi
     ;;
-  *-solaris*)
-    case "$target" in
-      *-solaris2.7 | *-solaris2.8 | *-solaris2.9 | *-solaris2.10)
+  *-netware)
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
 
   # If we're not using GNU ld, then there's no point in even trying these
   # tests.  Check for that first.  We should have already tested for gld
@@ -103326,71 +112623,25 @@ echo "${ECHO_T}$ac_ld_relro" >&6
   # Set linker optimization flags.
   if test x"$with_gnu_ld" = x"yes"; then
     OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
-  fi
-
-
-
-
-         cat >>confdefs.h <<\_ACEOF
-#define HAVE_MBSTATE_T 1
-_ACEOF
-
-         cat >>confdefs.h <<\_ACEOF
-#define HAVE_FINITE 1
-_ACEOF
-
-         cat >>confdefs.h <<\_ACEOF
-#define HAVE_FPCLASS 1
-_ACEOF
-
-         # All of the dependencies for wide character support are here, so
-         # turn it on.
-         cat >>confdefs.h <<\_ACEOF
-#define _GLIBCXX_USE_WCHAR_T 1
-_ACEOF
-
-
-         cat >>confdefs.h <<\_ACEOF
-#define HAVE_LIBM 1
-_ACEOF
-
-        ;;
-    esac
-    case "$target" in
-      *-*-solaris2.10)
-      # These two C99 functions are present only in Solaris >= 10
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOF 1
-_ACEOF
-
-      cat >>confdefs.h <<\_ACEOF
-#define HAVE_STRTOLD 1
-_ACEOF
+  fi
+
 
-     ;;
-    esac
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
-_ACEOF
 
-    cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNAN 1
-_ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_ISNANF 1
+#define HAVE_HYPOT 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_MODFF 1
+#define HAVE_ISINF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_HYPOT 1
+#define HAVE_ISNAN 1
 _ACEOF
 
     ;;
-  *-tpf)
+  *-qnx6.1* | *-qnx6.2*)
     SECTION_FLAGS='-ffunction-sections -fdata-sections'
 
 
@@ -103562,421 +112813,127 @@ echo "${ECHO_T}$ac_ld_relro" >&6
 
 
 
-
-
-echo "$as_me:$LINENO: checking for main in -lm" >&5
-echo $ECHO_N "checking for main in -lm... $ECHO_C" >&6
-if test "${ac_cv_lib_m_main+set}" = set; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  ac_check_lib_save_LIBS=$LIBS
-LIBS="-lm  $LIBS"
-if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSF 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-
 
-int
-main ()
-{
-main ();
-  ;
-  return 0;
-}
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSL 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  ac_cv_lib_m_main=yes
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-ac_cv_lib_m_main=no
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-echo "$as_me:$LINENO: result: $ac_cv_lib_m_main" >&5
-echo "${ECHO_T}$ac_cv_lib_m_main" >&6
-if test $ac_cv_lib_m_main = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_LIBM 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHF 1
 _ACEOF
 
-  LIBS="-lm $LIBS"
-
-fi
-
-
-for ac_func in copysignf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_COSHL 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
 
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGF 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOGL 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS ${ac_func}.lo"
-fi
-done
-
-
-
-for ac_func in __signbit
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10F 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
-
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_LOG10L 1
 _ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINF 1
 _ACEOF
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbit.lo"
-fi
-done
-
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINL 1
+_ACEOF
 
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHF 1
+_ACEOF
 
-for ac_func in __signbitf
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
-  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
-echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
-   { (exit 1); exit 1; }; }
-fi
-cat >conftest.$ac_ext <<_ACEOF
-/* confdefs.h.  */
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_SINHL 1
 _ACEOF
-cat confdefs.h >>conftest.$ac_ext
-cat >>conftest.$ac_ext <<_ACEOF
-/* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
 
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
+    ;;
+  *-solaris*)
+    case "$target" in
+      *-solaris2.7 | *-solaris2.8 | *-solaris2.9 | *-solaris2.10)
 
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
 
-#undef $ac_func
 
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
 
-int
-main ()
-{
-return f != $ac_func;
-  ;
-  return 0;
-}
-_ACEOF
-rm -f conftest.$ac_objext conftest$ac_exeext
-if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
-  (eval $ac_link) 2>conftest.er1
-  ac_status=$?
-  grep -v '^ *+' conftest.er1 >conftest.err
-  rm -f conftest.er1
-  cat conftest.err >&5
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); } &&
-        { ac_try='test -z "$ac_c_werror_flag"
-                        || test ! -s conftest.err'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; } &&
-        { ac_try='test -s conftest$ac_exeext'
-  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
-  (eval $ac_try) 2>&5
-  ac_status=$?
-  echo "$as_me:$LINENO: \$? = $ac_status" >&5
-  (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
-else
-  echo "$as_me: failed program was:" >&5
-sed 's/^/| /' conftest.$ac_ext >&5
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
 
-eval "$as_ac_var=no"
-fi
-rm -f conftest.err conftest.$ac_objext \
-      conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitf.lo"
-fi
-done
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
 
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
 
-          if test x$ac_cv_func_copysignl = x"yes"; then
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
 
-for ac_func in __signbitl
-do
-as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
-echo "$as_me:$LINENO: checking for $ac_func" >&5
-echo $ECHO_N "checking for $ac_func... $ECHO_C" >&6
-if eval "test \"\${$as_ac_var+set}\" = set"; then
-  echo $ECHO_N "(cached) $ECHO_C" >&6
-else
-  if test x$gcc_no_link = xyes; then
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
   { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
 echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
    { (exit 1); exit 1; }; }
@@ -103987,47 +112944,13 @@ _ACEOF
 cat confdefs.h >>conftest.$ac_ext
 cat >>conftest.$ac_ext <<_ACEOF
 /* end confdefs.h.  */
-/* Define $ac_func to an innocuous variant, in case <limits.h> declares $ac_func.
-   For example, HP-UX 11i <limits.h> declares gettimeofday.  */
-#define $ac_func innocuous_$ac_func
-
-/* System header to define __stub macros and hopefully few prototypes,
-    which can conflict with char $ac_func (); below.
-    Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
-    <limits.h> exists even on freestanding compilers.  */
-
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
-
-#undef $ac_func
-
-/* Override any gcc2 internal prototype to avoid an error.  */
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-/* We use char because int might match the return type of a gcc2
-   builtin and then its argument prototype would still apply.  */
-char $ac_func ();
-/* The GNU C library defines this for functions which it implements
-    to always fail with ENOSYS.  Some functions are actually named
-    something starting with __ and the normal name is an alias.  */
-#if defined (__stub_$ac_func) || defined (__stub___$ac_func)
-choke me
-#else
-char (*f) () = $ac_func;
-#endif
-#ifdef __cplusplus
-}
-#endif
+ int one(void) { return 1; }
+     int two(void) { return 2; }
 
 int
 main ()
 {
-return f != $ac_func;
+ two();
   ;
   return 0;
 }
@@ -104054,45 +112977,286 @@ if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
   ac_status=$?
   echo "$as_me:$LINENO: \$? = $ac_status" >&5
   (exit $ac_status); }; }; then
-  eval "$as_ac_var=yes"
+  ac_gcsections=yes
 else
   echo "$as_me: failed program was:" >&5
 sed 's/^/| /' conftest.$ac_ext >&5
 
-eval "$as_ac_var=no"
+ac_gcsections=no
 fi
 rm -f conftest.err conftest.$ac_objext \
       conftest$ac_exeext conftest.$ac_ext
-fi
-echo "$as_me:$LINENO: result: `eval echo '${'$as_ac_var'}'`" >&5
-echo "${ECHO_T}`eval echo '${'$as_ac_var'}'`" >&6
-if test `eval echo '${'$as_ac_var'}'` = yes; then
-  cat >>confdefs.h <<_ACEOF
-#define `echo "HAVE_$ac_func" | $as_tr_cpp` 1
-_ACEOF
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
 
-else
-  LIBMATHOBJS="$LIBMATHOBJS signbitl.lo"
-fi
-done
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
 
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
   fi
 
-  # Used in libmath/Makefile.am.
-  if test -n "$LIBMATHOBJS"; then
-    need_libmath=yes
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
   fi
 
 
+
+
+         cat >>confdefs.h <<\_ACEOF
+#define HAVE_MBSTATE_T 1
+_ACEOF
+
+         cat >>confdefs.h <<\_ACEOF
+#define HAVE_FINITE 1
+_ACEOF
+
+         cat >>confdefs.h <<\_ACEOF
+#define HAVE_FPCLASS 1
+_ACEOF
+
+         # All of the dependencies for wide character support are here, so
+         # turn it on.
+         cat >>confdefs.h <<\_ACEOF
+#define _GLIBCXX_USE_WCHAR_T 1
+_ACEOF
+
+        ;;
+    esac
+    case "$target" in
+      *-*-solaris2.10)
+      # These two C99 functions are present only in Solaris >= 10
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRTOF 1
+_ACEOF
+
+      cat >>confdefs.h <<\_ACEOF
+#define HAVE_STRTOLD 1
+_ACEOF
+
+     ;;
+    esac
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGN 1
+#define HAVE_ISNAN 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNF 1
+#define HAVE_ISNANF 1
+_ACEOF
+
+    cat >>confdefs.h <<\_ACEOF
+#define HAVE_MODFF 1
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
+#define HAVE_HYPOT 1
+_ACEOF
+
+    ;;
+  *-tpf)
+    SECTION_FLAGS='-ffunction-sections -fdata-sections'
+
+
+  # If we're not using GNU ld, then there's no point in even trying these
+  # tests.  Check for that first.  We should have already tested for gld
+  # by now (in libtool), but require it now just to be safe...
+  test -z "$SECTION_LDFLAGS" && SECTION_LDFLAGS=''
+  test -z "$OPT_LDFLAGS" && OPT_LDFLAGS=''
+
+
+
+  # The name set by libtool depends on the version of libtool.  Shame on us
+  # for depending on an impl detail, but c'est la vie.  Older versions used
+  # ac_cv_prog_gnu_ld, but now it's lt_cv_prog_gnu_ld, and is copied back on
+  # top of with_gnu_ld (which is also set by --with-gnu-ld, so that actually
+  # makes sense).  We'll test with_gnu_ld everywhere else, so if that isn't
+  # set (hence we're using an older libtool), then set it.
+  if test x${with_gnu_ld+set} != xset; then
+    if test x${ac_cv_prog_gnu_ld+set} != xset; then
+      # We got through "ac_require(ac_prog_ld)" and still not set?  Huh?
+      with_gnu_ld=no
+    else
+      with_gnu_ld=$ac_cv_prog_gnu_ld
+    fi
+  fi
+
+  # Start by getting the version number.  I think the libtool test already
+  # does some of this, but throws away the result.
+  glibcxx_ld_is_gold=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld version" >&5
+echo $ECHO_N "checking for ld version... $ECHO_C" >&6
+
+    if $LD --version 2>/dev/null | grep 'GNU gold' >/dev/null 2>&1; then
+      glibcxx_ld_is_gold=yes
+    fi
+    ldver=`$LD --version 2>/dev/null | head -1 | \
+           sed -e 's/GNU \(go\)\{0,1\}ld \(version \)\{0,1\}\(([^)]*) \)\{0,1\}\([0-9.][0-9.]*\).*/\4/'`
+
+    glibcxx_gnu_ld_version=`echo $ldver | \
+           $AWK -F. '{ if (NF<3) $3=0; print ($1*100+$2)*100+$3 }'`
+    echo "$as_me:$LINENO: result: $glibcxx_gnu_ld_version" >&5
+echo "${ECHO_T}$glibcxx_gnu_ld_version" >&6
+  fi
+
+  # Set --gc-sections.
+  glibcxx_have_gc_sections=no
+  if test "$glibcxx_ld_is_gold" = "yes"; then
+    if $LD --help 2>/dev/null | grep gc-sections >/dev/null 2>&1; then
+      glibcxx_have_gc_sections=yes
+    fi
+  else
+    glibcxx_gcsections_min_ld=21602
+    if test x"$with_gnu_ld" = x"yes" &&
+       test $glibcxx_gnu_ld_version -gt $glibcxx_gcsections_min_ld ; then
+      glibcxx_have_gc_sections=yes
+    fi
+  fi
+  if test "$glibcxx_have_gc_sections" = "yes"; then
+    # Sufficiently young GNU ld it is!  Joy and bunny rabbits!
+    # NB: This flag only works reliably after 2.16.1. Configure tests
+    # for this are difficult, so hard wire a value that should work.
+
+    ac_test_CFLAGS="${CFLAGS+set}"
+    ac_save_CFLAGS="$CFLAGS"
+    CFLAGS='-Wl,--gc-sections'
+
+    # Check for -Wl,--gc-sections
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,--gc-sections" >&5
+echo $ECHO_N "checking for ld that supports -Wl,--gc-sections... $ECHO_C" >&6
+    if test x$gcc_no_link = xyes; then
+  { { echo "$as_me:$LINENO: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&5
+echo "$as_me: error: Link tests are not allowed after GCC_NO_EXECUTABLES." >&2;}
+   { (exit 1); exit 1; }; }
+fi
+cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+ int one(void) { return 1; }
+     int two(void) { return 2; }
+
+int
+main ()
+{
+ two();
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext conftest$ac_exeext
+if { (eval echo "$as_me:$LINENO: \"$ac_link\"") >&5
+  (eval $ac_link) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest$ac_exeext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  ac_gcsections=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+ac_gcsections=no
+fi
+rm -f conftest.err conftest.$ac_objext \
+      conftest$ac_exeext conftest.$ac_ext
+    if test "$ac_gcsections" = "yes"; then
+      rm -f conftest.c
+      touch conftest.c
+      if $CC -c conftest.c; then
+       if $LD --gc-sections -o conftest conftest.o 2>&1 | \
+          grep "Warning: gc-sections option ignored" > /dev/null; then
+         ac_gcsections=no
+       fi
+      fi
+      rm -f conftest.c conftest.o conftest
+    fi
+    if test "$ac_gcsections" = "yes"; then
+      SECTION_LDFLAGS="-Wl,--gc-sections $SECTION_LDFLAGS"
+    fi
+    echo "$as_me:$LINENO: result: $ac_gcsections" >&5
+echo "${ECHO_T}$ac_gcsections" >&6
+
+    if test "$ac_test_CFLAGS" = set; then
+      CFLAGS="$ac_save_CFLAGS"
+    else
+      # this is the suspicious part
+      CFLAGS=''
+    fi
+  fi
+
+  # Set -z,relro.
+  # Note this is only for shared objects.
+  ac_ld_relro=no
+  if test x"$with_gnu_ld" = x"yes"; then
+    echo "$as_me:$LINENO: checking for ld that supports -Wl,-z,relro" >&5
+echo $ECHO_N "checking for ld that supports -Wl,-z,relro... $ECHO_C" >&6
+    cxx_z_relo=`$LD -v --help 2>/dev/null | grep "z relro"`
+    if test -n "$cxx_z_relo"; then
+      OPT_LDFLAGS="-Wl,-z,relro"
+      ac_ld_relro=yes
+    fi
+    echo "$as_me:$LINENO: result: $ac_ld_relro" >&5
+echo "${ECHO_T}$ac_ld_relro" >&6
+  fi
+
+  # Set linker optimization flags.
+  if test x"$with_gnu_ld" = x"yes"; then
+    OPT_LDFLAGS="-Wl,-O1 $OPT_LDFLAGS"
+  fi
+
+
+
+
+    cat >>confdefs.h <<\_ACEOF
 #define HAVE_FINITE 1
 _ACEOF
 
@@ -104267,10 +113431,6 @@ _ACEOF
 _ACEOF
 
     cat >>confdefs.h <<\_ACEOF
-#define HAVE_COPYSIGNL 1
-_ACEOF
-
-    cat >>confdefs.h <<\_ACEOF
 #define HAVE_COSL 1
 _ACEOF
 
@@ -104367,7 +113527,13 @@ fi;
       *) have_unwind_getipinfo=yes ;;
     esac
   else
-     have_unwind_getipinfo=yes
+    # Darwin before version 9 does not have _Unwind_GetIPInfo.
+
+    case ${target} in
+      *-*-darwin[3-8]|*-*-darwin[3-8].*) have_unwind_getipinfo=no ;;
+      *) have_unwind_getipinfo=yes ;;
+    esac
+
   fi
 
   if test x$have_unwind_getipinfo = xyes; then
@@ -107503,7 +116669,7 @@ if test x$enable_symvers = xyes ; then
   else
     if test $with_gnu_ld = yes ; then
       case ${target_os} in
-        cygwin* | pe | mingw32*)
+        cygwin* | pe | mingw32* | hpux*)
           enable_symvers=no ;;
         *)
           enable_symvers=gnu ;;
@@ -107729,6 +116895,68 @@ _ACEOF
 
 fi
 
+echo "$as_me:$LINENO: checking whether the target supports .symver directive" >&5
+echo $ECHO_N "checking whether the target supports .symver directive... $ECHO_C" >&6
+if test "${glibcxx_cv_have_as_symver_directive+set}" = set; then
+  echo $ECHO_N "(cached) $ECHO_C" >&6
+else
+
+  cat >conftest.$ac_ext <<_ACEOF
+/* confdefs.h.  */
+_ACEOF
+cat confdefs.h >>conftest.$ac_ext
+cat >>conftest.$ac_ext <<_ACEOF
+/* end confdefs.h.  */
+void foo (void); __asm (".symver foo, bar@SYMVER");
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+rm -f conftest.$ac_objext
+if { (eval echo "$as_me:$LINENO: \"$ac_compile\"") >&5
+  (eval $ac_compile) 2>conftest.er1
+  ac_status=$?
+  grep -v '^ *+' conftest.er1 >conftest.err
+  rm -f conftest.er1
+  cat conftest.err >&5
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); } &&
+        { ac_try='test -z "$ac_c_werror_flag"
+                        || test ! -s conftest.err'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; } &&
+        { ac_try='test -s conftest.$ac_objext'
+  { (eval echo "$as_me:$LINENO: \"$ac_try\"") >&5
+  (eval $ac_try) 2>&5
+  ac_status=$?
+  echo "$as_me:$LINENO: \$? = $ac_status" >&5
+  (exit $ac_status); }; }; then
+  glibcxx_cv_have_as_symver_directive=yes
+else
+  echo "$as_me: failed program was:" >&5
+sed 's/^/| /' conftest.$ac_ext >&5
+
+glibcxx_cv_have_as_symver_directive=no
+fi
+rm -f conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+echo "$as_me:$LINENO: result: $glibcxx_cv_have_as_symver_directive" >&5
+echo "${ECHO_T}$glibcxx_cv_have_as_symver_directive" >&6
+if test $glibcxx_cv_have_as_symver_directive = yes; then
+
+cat >>confdefs.h <<\_ACEOF
+#define HAVE_AS_SYMVER_DIRECTIVE 1
+_ACEOF
+
+fi
+
 
 
 
@@ -108755,7 +117983,7 @@ done
   fi
 
   # Export file names for ABI checking.
-  baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}\$(MULTISUBDIR)"
+  baseline_dir="$glibcxx_srcdir/config/abi/post/${abi_baseline_pair}"
 
 
 
@@ -108779,8 +118007,6 @@ ABI_TWEAKS_SRCDIR=config/${abi_tweaks_dir}
 # Determine cross-compile flags and AM_CONDITIONALs.
 #AC_SUBST(GLIBCXX_IS_NATIVE)
 #AM_CONDITIONAL(CANADIAN, test $CANADIAN = yes)
-# from GLIBCXX_CHECK_COMPLEX_MATH_SUPPORT:
-#AM_CONDITIONAL(GLIBCXX_BUILD_LIBMATH,  test $need_libmath = yes)
 
 
 if test $is_hosted = yes; then
@@ -109145,7 +118371,7 @@ else
 fi
 
 
-                                                                                ac_config_files="$ac_config_files Makefile include/Makefile libmath/Makefile libsupc++/Makefile src/Makefile doc/Makefile po/Makefile testsuite/Makefile"
+                                                                      ac_config_files="$ac_config_files Makefile include/Makefile libsupc++/Makefile src/Makefile doc/Makefile po/Makefile testsuite/Makefile"
 
           ac_config_files="$ac_config_files scripts/testsuite_flags"
 
@@ -110186,7 +119412,6 @@ do
   # Handling of arguments.
   "Makefile" ) CONFIG_FILES="$CONFIG_FILES Makefile" ;;
   "include/Makefile" ) CONFIG_FILES="$CONFIG_FILES include/Makefile" ;;
-  "libmath/Makefile" ) CONFIG_FILES="$CONFIG_FILES libmath/Makefile" ;;
   "libsupc++/Makefile" ) CONFIG_FILES="$CONFIG_FILES libsupc++/Makefile" ;;
   "src/Makefile" ) CONFIG_FILES="$CONFIG_FILES src/Makefile" ;;
   "doc/Makefile" ) CONFIG_FILES="$CONFIG_FILES doc/Makefile" ;;
@@ -110418,7 +119643,6 @@ s,@EXTRA_CXX_FLAGS@,$EXTRA_CXX_FLAGS,;t t
 s,@GLIBCXX_LIBS@,$GLIBCXX_LIBS,;t t
 s,@SECTION_LDFLAGS@,$SECTION_LDFLAGS,;t t
 s,@OPT_LDFLAGS@,$OPT_LDFLAGS,;t t
-s,@LIBMATHOBJS@,$LIBMATHOBJS,;t t
 s,@LIBICONV@,$LIBICONV,;t t
 s,@LTLIBICONV@,$LTLIBICONV,;t t
 s,@SYMVER_FILE@,$SYMVER_FILE,;t t