mirror of
https://sourceware.org/git/glibc.git
synced 2024-12-05 11:11:04 +00:00
63ae7b6309
* Versions.def (libm): Add GLIBC_2.1.3. ISO C99 TR1 changes various fe* functions to return an error value. * math/Versions [GLIBC_2.1.3]: Add feclearexcept, fegetexceptflag, feraiseexcept, fesetexceptflag, fegetenv, fesetenv, and feupdateenv. * sysdeps/alpha/fpu/fclrexcpt.c: Return value and add alias. * sysdeps/alpha/fpu/fegetenv.c: Likewise. * sysdeps/alpha/fpu/fesetenv.c: Likewise. * sysdeps/alpha/fpu/feupdateenv.c: Likewise. * sysdeps/alpha/fpu/fgetexcptflg.c: Likewise. * sysdeps/alpha/fpu/fraiseexcpt.c: Likewise. * sysdeps/alpha/fpu/fsetexcptflg.c: Likewise. * sysdeps/arm/fpu/fclrexcpt.c: Likewise. * sysdeps/arm/fpu/fegetenv.c: Likewise. * sysdeps/arm/fpu/fesetenv.c: Likewise. * sysdeps/arm/fpu/fraiseexcpt.c: Likewise. * sysdeps/arm/fpu/fsetexcptflg.c: Likewise. * sysdeps/generic/fclrexcpt.c: Likewise. * sysdeps/generic/fegetenv.c: Likewise. * sysdeps/generic/fesetenv.c: Likewise. * sysdeps/generic/feupdateenv.c: Likewise. * sysdeps/generic/fgetexcptflg.c: Likewise. * sysdeps/generic/fraiseexcpt.c: Likewise. * sysdeps/generic/fsetexcptflg.c: Likewise. * sysdeps/i386/fpu/fclrexcpt.c: Likewise. * sysdeps/i386/fpu/fegetenv.c: Likewise. * sysdeps/i386/fpu/fesetenv.c: Likewise. * sysdeps/i386/fpu/feupdateenv.c: Likewise. * sysdeps/i386/fpu/fgetexcptflg.c: Likewise. * sysdeps/i386/fpu/fraiseexcpt.c: Likewise. * sysdeps/i386/fpu/fsetexcptflg.c: Likewise. * sysdeps/m68k/fpu/fclrexcpt.c: Likewise. * sysdeps/m68k/fpu/fegetenv.c: Likewise. * sysdeps/m68k/fpu/fesetenv.c: Likewise. * sysdeps/m68k/fpu/feupdateenv.c: Likewise. * sysdeps/m68k/fpu/fgetexcptflg.c: Likewise. * sysdeps/m68k/fpu/fraiseexcpt.c: Likewise. * sysdeps/m68k/fpu/fsetexcptflg.c: Likewise. * sysdeps/mips/fclrexcpt.c: Likewise. * sysdeps/mips/fegetenv.c: Likewise. * sysdeps/mips/fesetenv.c: Likewise. * sysdeps/mips/feupdateenv.c: Likewise. * sysdeps/mips/fgetexcptflg.c: Likewise. * sysdeps/powerpc/fclrexcpt.c: Likewise. * sysdeps/powerpc/fegetenv.c: Likewise. * sysdeps/powerpc/fesetenv.c: Likewise. * sysdeps/powerpc/feupdateenv.c: Likewise. * sysdeps/powerpc/fgetexcptflg.c: Likewise. * sysdeps/powerpc/fraiseexcpt.c: Likewise. * sysdeps/powerpc/fsetexcptflg.c: Likewise. * sysdeps/sparc/fpu/fclrexcpt.c: Likewise. * sysdeps/sparc/fpu/fegetenv.c: Likewise. * sysdeps/sparc/fpu/fesetenv.c: Likewise. * sysdeps/sparc/fpu/feupdateenv.c: Likewise. * sysdeps/sparc/fpu/fgetexcptflg.c: Likewise. * sysdeps/sparc/fpu/fraiseexcpt.c: Likewise. * sysdeps/sparc/fpu/fsetexcptflg.c: Likewise. * math/fenv.h: Adjust prototypes.: Likewise. * manual/arith.texi: Adjust documentation for these changes. * manual/arith.texi: Document feraiseexcept. * sysdeps/powerpc/fegetenv.c: Moved to... * sysdeps/powerpc/fpu/fegetenv.c: ...here. * sysdeps/powerpc/fegetround.c: Moved to... * sysdeps/powerpc/fpu/fegetround.c: ...here. * sysdeps/powerpc/feholdexcpt.c: Moved to... * sysdeps/powerpc/fpu/feholdexcpt.c: ...here. * sysdeps/powerpc/fesetenv.c: Moved to... * sysdeps/powerpc/fpu/fesetenv.c: ...here. * sysdeps/powerpc/fenv_libc.h: Moved to... * sysdeps/powerpc/fpu/fenv_libc.h: ...here. * sysdeps/powerpc/feupdateenv.c: Moved to... * sysdeps/powerpc/fpu/feupdateenv.c: ...here. * sysdeps/powerpc/fgetexcptflg.c: Moved to... * sysdeps/powerpc/fpu/fgetexcptflg.c: ...here. * sysdeps/powerpc/fraiseexcpt.c: Moved to... * sysdeps/powerpc/fpu/fraiseexcpt.c: ...here. * sysdeps/powerpc/fsetexcptflg.c: Moved to... * sysdeps/powerpc/fpu/fsetexcptflg.c: ...here. * sysdeps/powerpc/ftestexcept.c: Moved to... * sysdeps/powerpc/fpu/ftestexcept.c: ...here. * sysdeps/powerpc/fesetround.c: Moved to... * sysdeps/powerpc/fpu/fesetround.c: ...here * sysdeps/powerpc/fenv_const.c: Moved to... * sysdeps/powerpc/fpu/fenv_const.c: ...here. 1999-10-29 Jakub Jelinek <jakub@redhat.com> * stdlib/longlong.h: Avoid UDIV_TIME redefinition. * sysdeps/sparc/sparc32/dl-machine.h: Fix loading of SPARC v8plus libraries from statically linked programs. * sysdeps/unix/sysv/linux/sparc/bits/sigaction.h: POSIX 199309 fix for sigaction on SPARC. Patches by David S. Miller <davem@redhat.com>. * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h: Declare gregset_t and other required structures and defines for SPARC 64bit ABI as well, not only 32bit ABI. 1999-10-31 Andreas Jaeger <aj@suse.de> * sysdeps/sparc/sparc64/fpu/bits/huge_val.h: Replace __USE_ISOC9X by __USE_ISOC99 and update comments. * math/complex.h: Update comments for ISO C99. * math/fenv.h: Likewise. * math/test-fenv.c: Likewise. * math/tgmath.h: Likewise. * libio/stdio.h: Likewise. * posix/sys/types.h: Likewise. * sysdeps/generic/inttypes.h: Likewise. * sysdeps/generic/stdint.h: Likewise. 1999-10-31 Ulrich Drepper <drepper@cygnus.com>
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/* `HUGE_VAL' constants for IEEE 754 machines (where it is infinity).
|
|
Used by <stdlib.h> and <math.h> functions for overflow.
|
|
Copyright (C) 1992, 1995, 1996, 1997, 1999 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Library General Public License as
|
|
published by the Free Software Foundation; either version 2 of the
|
|
License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Library General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Library General Public
|
|
License along with the GNU C Library; see the file COPYING.LIB. If not,
|
|
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
#ifndef _MATH_H
|
|
# error "Never use <bits/huge_val.h> directly; include <math.h> instead."
|
|
#endif
|
|
|
|
#include <features.h>
|
|
#include <bits/wordsize.h>
|
|
|
|
/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
|
|
|
|
#ifdef __GNUC__
|
|
|
|
# if __GNUC_PREREQ(2,95)
|
|
|
|
# define HUGE_VAL (0x1.0p2047)
|
|
|
|
# else
|
|
|
|
# define HUGE_VAL \
|
|
(__extension__ \
|
|
((union { unsigned __l __attribute__((__mode__(__DI__))); double __d; }) \
|
|
{ __l: 0x7ff0000000000000ULL }).__d)
|
|
|
|
# endif
|
|
|
|
#else /* not GCC */
|
|
|
|
typedef union { unsigned char __c[8]; double __d; } __huge_val_t;
|
|
|
|
# define __HUGE_VAL_bytes { 0x7f, 0xf0, 0, 0, 0, 0, 0, 0 }
|
|
|
|
static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
|
|
# define HUGE_VAL (__huge_val.__d)
|
|
|
|
#endif /* GCC. */
|
|
|
|
|
|
/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
|
|
|
|
#ifdef __USE_ISOC99
|
|
|
|
# if __GNUC_PREREQ(2,95)
|
|
|
|
# define HUGE_VALF (0x1.0p255f)
|
|
# if __WORDSIZE == 32
|
|
# define HUGE_VALL HUGE_VAL
|
|
# else
|
|
/* Sparc64 uses IEEE 754 128bit long double */
|
|
# define HUGE_VALL (0x1.0p32767L)
|
|
# endif
|
|
|
|
# else
|
|
|
|
# ifdef __GNUC__
|
|
|
|
# define HUGE_VALF \
|
|
(__extension__ \
|
|
((union { unsigned __l __attribute__((__mode__(__SI__))); float __d; }) \
|
|
{ __l: 0x7f800000UL }).__d)
|
|
|
|
# else /* not GCC */
|
|
|
|
typedef union { unsigned char __c[4]; float __f; } __huge_valf_t;
|
|
|
|
# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
|
|
|
|
static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
|
|
# define HUGE_VALF (__huge_valf.__f)
|
|
|
|
# endif /* GCC. */
|
|
|
|
# if __WORDSIZE == 32
|
|
|
|
/* Sparc32 has IEEE 754 64bit long double */
|
|
# define HUGE_VALL HUGE_VAL
|
|
|
|
# else
|
|
|
|
/* Sparc64 uses IEEE 754 128bit long double */
|
|
|
|
# ifdef __GNUC__
|
|
|
|
# define HUGE_VALL \
|
|
(__extension__ \
|
|
((union { struct { unsigned long __h, __l; } __i; long double __d; }) \
|
|
{ __i: { __h: 0x7fff000000000000UL, __l: 0 } }).__d)
|
|
|
|
# else /* not GCC */
|
|
|
|
typedef union { unsigned char __c[16]; long double __d; } __huge_vall_t;
|
|
|
|
# define __HUGE_VALL_bytes { 0x7f, 0xff, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }
|
|
|
|
static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
|
|
# define HUGE_VALL (__huge_vall.__d)
|
|
|
|
# endif /* GCC. */
|
|
|
|
# endif
|
|
|
|
# endif /* GCC 2.95. */
|
|
|
|
#endif /* __USE_ISOC99. */
|