1    	/* `INFINITY' constant for IEEE 754 machines.
2    	   Copyright (C) 2004-2015 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