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/* `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, 2000 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, 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(2,96)

# define HUGE_VAL       (__extension__ 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(2,96)

#  define HUGE_VALF (__extension__ 0x1.0p255f)

#  define HUGE_VALL (__extension__ 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.  */