mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-30 00:31:08 +00:00
42 lines
1.5 KiB
C
42 lines
1.5 KiB
C
/* `HUGE_VALL' constant for ia64 (where it is infinity).
|
|
Used by <stdlib.h> and <math.h> functions for overflow.
|
|
Copyright (C) 2000-2015 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 Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#ifndef _MATH_H
|
|
# error "Never use <bits/huge_vall.h> directly; include <math.h> instead."
|
|
#endif
|
|
|
|
#if __GNUC_PREREQ(3,3)
|
|
# define HUGE_VALL (__builtin_huge_vall())
|
|
#elif __GNUC_PREREQ(2,96)
|
|
# define HUGE_VALL (__extension__ 0x1.0p32767L)
|
|
#else
|
|
|
|
# define __HUGE_VALL_bytes { 0,0,0,0,0,0,0, 0x80, 0xff, 0x7f, 0,0,0,0,0,0}
|
|
|
|
# define __huge_vall_t union { unsigned char __c[16]; 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 */
|