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01: /* Default `HUGE_VALL' constant.
02:    Used by <stdlib.h> and <math.h> functions for overflow.
03:    Copyright (C) 1992, 1996, 1997, 2004 Free Software Foundation, Inc.
04:    This file is part of the GNU C Library.
05: 
06:    The GNU C Library is free software; you can redistribute it and/or
07:    modify it under the terms of the GNU Lesser General Public
08:    License as published by the Free Software Foundation; either
09:    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_vall.h> directly; include <math.h> instead."
23: #endif
24: 
25: #if __GNUC_PREREQ(3,3)
26: # define HUGE_VALL      (__builtin_huge_vall())
27: #else
28: # define HUGE_VALL      ((long double) HUGE_VAL)
29: #endif
30: 

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