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/* `HUGE_VALF' constant 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, 2000, 2004
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_valf.h> directly; include <math.h> instead."
#endif
/* IEEE positive infinity (-HUGE_VAL is negative infinity). */
#if __GNUC_PREREQ(3,3)
# define HUGE_VALF (__builtin_huge_valf())
#elif __GNUC_PREREQ(2,96)
# define HUGE_VALF (__extension__ 0x1.0p255f)
#elif defined __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;
# if __BYTE_ORDER == __BIG_ENDIAN
# define __HUGE_VALF_bytes { 0x7f, 0x80, 0, 0 }
# endif
# if __BYTE_ORDER == __LITTLE_ENDIAN
# define __HUGE_VALF_bytes { 0, 0, 0x80, 0x7f }
# endif
static __huge_valf_t __huge_valf = { __HUGE_VALF_bytes };
# define HUGE_VALF (__huge_valf.__f)
#endif /* GCC. */