gcc/

[pf3gnuchains/gcc-fork.git] / gcc / real.h

diff --git a/gcc/real.h b/gcc/real.h
index f050daf..9809004 100644 (file)
--- a/gcc/real.h
+++ b/gcc/real.h
@@ -1,12 +1,12 @@
 /* Definitions of floating-point access for GNU compiler.
    Copyright (C) 1989, 1991, 1994, 1996, 1997, 1998, 1999,
-   2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+   2000, 2002, 2003, 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
 
    This file is part of GCC.
 
    GCC is free software; you can redistribute it and/or modify it under
    the terms of the GNU General Public License as published by the Free
-   Software Foundation; either version 2, or (at your option) any later
+   Software Foundation; either version 3, or (at your option) any later
    version.
 
    GCC is distributed in the hope that it will be useful, but WITHOUT ANY
@@ -15,15 +15,16 @@
    for more details.
 
    You should have received a copy of the GNU General Public License
-   along with GCC; see the file COPYING.  If not, write to the Free
-   Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
-   02110-1301, USA.  */
+   along with GCC; see the file COPYING3.  If not see
+   <http://www.gnu.org/licenses/>.  */
 
 #ifndef GCC_REAL_H
 #define GCC_REAL_H
 
+#ifndef GENERATOR_FILE
 #include <gmp.h>
 #include <mpfr.h>
+#endif
 #include "machmode.h"
 
 /* An expanded form of the represented number.  */
@@ -192,6 +193,9 @@ extern bool real_isinf (const REAL_VALUE_TYPE *);
 /* Determine whether a floating-point value X is a NaN.  */
 extern bool real_isnan (const REAL_VALUE_TYPE *);
 
+/* Determine whether a floating-point value X is finite.  */
+extern bool real_isfinite (const REAL_VALUE_TYPE *);
+
 /* Determine whether a floating-point value X is negative.  */
 extern bool real_isneg (const REAL_VALUE_TYPE *);
 
@@ -246,7 +250,7 @@ extern bool real_nan (REAL_VALUE_TYPE *, const char *, int, enum machine_mode);
 
 extern void real_maxval (REAL_VALUE_TYPE *, int, enum machine_mode);
 
-extern void real_2expN (REAL_VALUE_TYPE *, int);
+extern void real_2expN (REAL_VALUE_TYPE *, int, enum machine_mode);
 
 extern unsigned int real_hash (const REAL_VALUE_TYPE *);
 
@@ -254,10 +258,10 @@ extern unsigned int real_hash (const REAL_VALUE_TYPE *);
 /* Target formats defined in real.c.  */
 extern const struct real_format ieee_single_format;
 extern const struct real_format mips_single_format;
-extern const struct real_format coldfire_single_format;
+extern const struct real_format motorola_single_format;
 extern const struct real_format ieee_double_format;
 extern const struct real_format mips_double_format;
-extern const struct real_format coldfire_double_format;
+extern const struct real_format motorola_double_format;
 extern const struct real_format ieee_extended_motorola_format;
 extern const struct real_format ieee_extended_intel_96_format;
 extern const struct real_format ieee_extended_intel_96_round_53_format;
@@ -269,8 +273,6 @@ extern const struct real_format mips_quad_format;
 extern const struct real_format vax_f_format;
 extern const struct real_format vax_d_format;
 extern const struct real_format vax_g_format;
-extern const struct real_format c4x_single_format;
-extern const struct real_format c4x_extended_format;
 extern const struct real_format real_internal_format;
 extern const struct real_format decimal_single_format;
 extern const struct real_format decimal_double_format;
@@ -372,23 +374,28 @@ extern void real_ldexp (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
 
 /* **** End of software floating point emulator interface macros **** */
 \f
-/* Constant real values 0, 1, 2, 3, 10, -1, -2, 0.5 and 1/3.  */
+/* Constant real values 0, 1, 2, -1 and 0.5.  */
 
 extern REAL_VALUE_TYPE dconst0;
 extern REAL_VALUE_TYPE dconst1;
 extern REAL_VALUE_TYPE dconst2;
-extern REAL_VALUE_TYPE dconst3;
-extern REAL_VALUE_TYPE dconst10;
 extern REAL_VALUE_TYPE dconstm1;
-extern REAL_VALUE_TYPE dconstm2;
 extern REAL_VALUE_TYPE dconsthalf;
-extern REAL_VALUE_TYPE dconstthird;
-extern REAL_VALUE_TYPE dconstsqrt2;
-extern REAL_VALUE_TYPE dconste;
+
+/* Enumerate the special constant values we need. */
+enum real_value_const {
+  rv_e,
+  rv_third,
+  rv_sqrt2,
+  rv_max
+};
+
+/* Function to return a real value special constant.  */
+extern const REAL_VALUE_TYPE * get_real_const (enum real_value_const);
 
 /* Function to return a real value (not a tree node)
    from a given integer constant.  */
-REAL_VALUE_TYPE real_value_from_int_cst (tree, tree);
+REAL_VALUE_TYPE real_value_from_int_cst (const_tree, const_tree);
 
 /* Given a CONST_DOUBLE in FROM, store into TO the value it represents.  */
 #define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \
@@ -426,13 +433,19 @@ extern void real_round (REAL_VALUE_TYPE *, enum machine_mode,
 /* Set the sign of R to the sign of X.  */
 extern void real_copysign (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
 
+#ifndef GENERATOR_FILE
 /* Convert between MPFR and REAL_VALUE_TYPE.  The caller is
    responsible for initializing and clearing the MPFR parameter.  */
 
 extern void real_from_mpfr (REAL_VALUE_TYPE *, mpfr_srcptr, tree, mp_rnd_t);
 extern void mpfr_from_real (mpfr_ptr, const REAL_VALUE_TYPE *, mp_rnd_t);
+#endif
 
 /* Check whether the real constant value given is an integer.  */
 extern bool real_isinteger (const REAL_VALUE_TYPE *c, enum machine_mode mode);
 
+/* Write into BUF the maximum representable finite floating-point
+   number, (1 - b**-p) * b**emax for a given FP format FMT as a hex
+   float string.  BUF must be large enough to contain the result.  */
+extern void get_max_float (const struct real_format *, char *, size_t);
 #endif /* ! GCC_REAL_H */