1/* `INFINITY' constant for IEEE 754 machines.
2 Copyright (C) 2004-2014 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, see
17 <http://www.gnu.org/licenses/>. */
18
19#ifndef _MATH_H
20# error "Never use <bits/inf.h> directly; include <math.h> instead."
21#endif
22
23/* IEEE positive infinity. */
24
25#if __GNUC_PREREQ(3,3)
26# define INFINITY (__builtin_inff())
27#else
28# define INFINITY HUGE_VALF
29#endif
30