1 /* `INFINITY' constant for IEEE 754 machines. 2 Copyright (C) 2004 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, write to the Free 17 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 18 02111-1307 USA. */ 19 20 #ifndef _MATH_H 21 # error "Never use <bits/inf.h> directly; include <math.h> instead." 22 #endif 23 24 /* IEEE positive infinity. */ 25 26 #if __GNUC_PREREQ(3,3) 27 # define INFINITY (__builtin_inff()) 28 #else 29 # define INFINITY HUGE_VALF 30 #endif 31