1/* Default `HUGE_VALL' 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_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