glibc/sysdeps/i386/bits/huge_val.h
Ulrich Drepper ec751a23c0 Update.
1999-10-31  Ulrich Drepper  <drepper@cygnus.com>

	* includes/features.h: Replace __USE_ISOC9X by __USE_ISOC99 and also
	recognize _ISOC99_SOURCE.
	* libio/stdio.h: Likewise.
	* math/math.h: Likewise.
	* math/bits/mathcalls.h: Likewise.
	* math/stdio.h: Likewise.
	* stdlib/stdlib.h: Likewise.
	* sysdeps/alpha/fpu/bits/mathdef.h: Likewise.
	* sysdeps/alpha/fpu/bits/mathinline.h: Likewise.
	* sysdeps/arm/bits/huge_val.h: Likewise.
	* sysdeps/generic/bits/mathdef.h: Likewise.
	* sysdeps/i386/bits/huge_val.h: Likewise.
	* sysdeps/i386/fpu/bits/mathdef.h: Likewise.
	* sysdeps/i386/fpu/bits/mathinline.h: Likewise.
	* sysdeps/ieee754/bits/huge_val.h: Likewise.
	* sysdeps/m68k/bits/huge_val.h: Likewise.
	* sysdeps/m68k/fpu/bits/mathdef.h: Likewise.
	* sysdeps/m68k/fpu/bits/mathinline.h: Likewise.
	* sysdeps/powerpc/bits/mathdef.h: Likewise.
	* sysdeps/powerpc/bits/mathinline.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathdef.h: Likewise.
	* sysdeps/sparc/fpu/bits/mathinline.h: Likewise.
	* sysdeps/sparc/sparc32/fpu/bits/huge_val.h: Likewise.
	* wcsmbs/wchar.h: Likewise.

	* sysdeps/powerpc/bits/mathdef.h: Moved to...
	* sysdeps/powerpc/fpu/bits/mathdef.h: ...here.
	* sysdeps/powerpc/bits/mathinline.h: Moved to...
	* sysdeps/powerpc/fpu/bits/mathinline.h: ...here.

1999-10-31  Andreas Jaeger  <aj@suse.de>

	* manual/math.texi (Errors in Math Functions): Correct TeX code.

1999-10-31  Andreas Jaeger  <aj@suse.de>

	* math/libm-test.inc:  Change comments to use ISO C99 instead of
	ISO C9x.
	* math/w_lgamma.c: Likewise.
	* math/w_lgammaf.c: Likewise.
	* math/w_lgammal.c: Likewise.
	* math/test-fenv.c: Likewise.
	* sysdeps/ieee754/ldbl-96/printf_fphex.c: Likewise.
	* sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise.
	* sysdeps/generic/printf_fphex.c: Likewise.

1999-10-31  Andreas Jaeger  <aj@suse.de>

	* manual/arith.texi (Parsing of Floats): Remove C from ISO C comment.

	* manual/math.texi: Change ISO C9x to ISO C99.
	* manual/startup.texi: Likewise.
	* manual/stdio.texi: Likewise.

1999-10-31  Andreas Jaeger  <aj@suse.de>

	* manual/arith.texi: Change ISO C9x to ISO C99.
	* manual/time.texi (Low-Level Time String Parsing): Likewise.
1999-10-31 17:37:43 +00:00

82 lines
2.6 KiB
C

/* `HUGE_VAL' constants for ix86 (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>
/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
#if __GNUC_PREREQ(2,95)
# define HUGE_VAL (0x1.0p2047)
#else
# define __HUGE_VAL_bytes { 0, 0, 0, 0, 0, 0, 0xf0, 0x7f }
# define __huge_val_t union { unsigned char __c[8]; double __d; }
# ifdef __GNUC__
# define HUGE_VAL (__extension__ \
((__huge_val_t) { __c: __HUGE_VAL_bytes }).__d)
# else /* Not GCC. */
static __huge_val_t __huge_val = { __HUGE_VAL_bytes };
# define HUGE_VAL (__huge_val.__d)
# endif /* GCC. */
#endif /* GCC 2.95 */
/* ISO C99 extensions: (float) HUGE_VALF and (long double) HUGE_VALL. */
#ifdef __USE_ISOC99
# if __GNUC_PREREQ(2,95)
# define HUGE_VALF (0x1.0p255f)
# define HUGE_VALL (0x1.0p32767L)
# else
# define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f }
# define __huge_valf_t union { unsigned char __c[4]; float __f; }
# ifdef __GNUC__
# define HUGE_VALF (__extension__ \
((__huge_valf_t) { __c: __HUGE_VALF_bytes }).__f)
# else /* Not GCC. */
static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
# define HUGE_VALF (__huge_valf.__f)
# endif /* GCC. */
# define __HUGE_VALL_bytes { 0, 0, 0, 0, 0, 0, 0, 0x80, 0xff, 0x7f, 0, 0 }
# define __huge_vall_t union { unsigned char __c[12]; long double __ld; }
# ifdef __GNUC__
# define HUGE_VALL (__extension__ \
((__huge_vall_t) { __c: __HUGE_VALL_bytes }).__ld)
# else /* Not GCC. */
static __huge_vall_t __huge_vall = { __HUGE_VALL_bytes };
# define HUGE_VALL (__huge_vall.__ld)
# endif /* GCC. */
# endif /* GCC 2.95 */
#endif /* __USE_ISOC99. */