1    	/* Copyright (C) 2001, 2004 Free Software Foundation, Inc.
2    	   This file is part of the GNU C Library.
3    	
4    	   The GNU C Library is free software; you can redistribute it and/or
5    	   modify it under the terms of the GNU Lesser General Public
6    	   License as published by the Free Software Foundation; either
7    	   version 2.1 of the License, or (at your option) any later version.
8    	
9    	   The GNU C Library is distributed in the hope that it will be useful,
10   	   but WITHOUT ANY WARRANTY; without even the implied warranty of
11   	   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
12   	   Lesser General Public License for more details.
13   	
14   	   You should have received a copy of the GNU Lesser General Public
15   	   License along with the GNU C Library; if not, write to the Free
16   	   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
17   	   02111-1307 USA.  */
18   	
19   	#if !defined _MATH_H && !defined _COMPLEX_H
20   	# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
21   	#endif
22   	
23   	#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
24   	# define _MATH_H_MATHDEF	1
25   	
26   	# include <bits/wordsize.h>
27   	
28   	# if __WORDSIZE == 64 || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0)
29   	/* The x86-64 architecture computes values with the precission of the
30   	   used type.  Similarly for -m32 -mfpmath=sse.  */
31   	typedef float float_t;		/* `float' expressions are evaluated as `float'.  */
32   	typedef double double_t;	/* `double' expressions are evaluated
33   					   as `double'.  */
34   	# else
35   	/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
36   	   which is also available for the user as `long double'.  Therefore we
37   	   define:  */
38   	typedef long double float_t;	/* `float' expressions are evaluated as
39   					   `long double'.  */
40   	typedef long double double_t;	/* `double' expressions are evaluated as
41   					   `long double'.  */
42   	# endif
43   	
44   	/* The values returned by `ilogb' for 0 and NaN respectively.  */
45   	# define FP_ILOGB0	(-2147483647 - 1)
46   	# define FP_ILOGBNAN	(-2147483647 - 1)
47   	
48   	#endif	/* ISO C99 */
49