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