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