AC_CHECK_HEADERS(sys/mman.h sys/types.h sys/stat.h floatingpoint.h ieeefp.h)
AC_CHECK_HEADERS(fenv.h fptrap.h float.h)
AC_CHECK_HEADER([complex.h],[AC_DEFINE([HAVE_COMPLEX_H], [1], [complex.h exists])])
+GCC_HEADER_STDINT(gstdint.h)
AC_CHECK_MEMBERS([struct stat.st_blksize])
AC_CHECK_MEMBERS([struct stat.st_blocks])