1: /* Stub `HUGE_VAL' constant.
    2:    Used by <stdlib.h> and <math.h> functions for overflow.
    3:    Copyright (C) 1992, 1996, 1997, 2004 Free Software Foundation, Inc.
    4:    This file is part of the GNU C Library.
    5: 
    6:    The GNU C Library is free software; you can redistribute it and/or
    7:    modify it under the terms of the GNU Lesser General Public
    8:    License as published by the Free Software Foundation; either
    9:    version 2.1 of the License, or (at your option) any later version.
   10: 
   11:    The GNU C Library is distributed in the hope that it will be useful,
   12:    but WITHOUT ANY WARRANTY; without even the implied warranty of
   13:    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   14:    Lesser General Public License for more details.
   15: 
   16:    You should have received a copy of the GNU Lesser General Public
   17:    License along with the GNU C Library; if not, write to the Free
   18:    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   19:    02111-1307 USA.  */
   20: 
   21: #ifndef _MATH_H
   22: # error "Never use <bits/huge_val.h> directly; include <math.h> instead."
   23: #endif
   24: 
   25: #if __GNUC_PREREQ(3,3)
   26: # define HUGE_VAL       (__builtin_huge_val())
   27: #else
   28: # define HUGE_VAL       1e37
   29: #endif