1    	/* Copyright (C) 2001-2015 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, see
16   	   <http://www.gnu.org/licenses/>.  */
17   	
18   	#if !defined _MATH_H && !defined _COMPLEX_H
19   	# error "Never use <bits/mathdef.h> directly; include <math.h> instead"
20   	#endif
21   	
22   	#if defined __USE_ISOC99 && defined _MATH_H && !defined _MATH_H_MATHDEF
23   	# define _MATH_H_MATHDEF	1
24   	
25   	# if defined __x86_64__ || (defined __FLT_EVAL_METHOD__ && __FLT_EVAL_METHOD__ == 0)
26   	/* The x86-64 architecture computes values with the precission of the
27   	   used type.  Similarly for -m32 -mfpmath=sse.  */
28   	typedef float float_t;		/* `float' expressions are evaluated as `float'.  */
29   	typedef double double_t;	/* `double' expressions are evaluated
30   					   as `double'.  */
31   	# else
32   	/* The ix87 FPUs evaluate all values in the 80 bit floating-point format
33   	   which is also available for the user as `long double'.  Therefore we
34   	   define:  */
35   	typedef long double float_t;	/* `float' expressions are evaluated as
36   					   `long double'.  */
37   	typedef long double double_t;	/* `double' expressions are evaluated as
38   					   `long double'.  */
39   	# endif
40   	
41   	/* The values returned by `ilogb' for 0 and NaN respectively.  */
42   	# define FP_ILOGB0	(-2147483647 - 1)
43   	# define FP_ILOGBNAN	(-2147483647 - 1)
44   	
45   	/* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
46   	   builtins are supported.  */
47   	# ifdef __FP_FAST_FMA
48   	#  define FP_FAST_FMA 1
49   	# endif
50   	
51   	# ifdef __FP_FAST_FMAF
52   	#  define FP_FAST_FMAF 1
53   	# endif
54   	
55   	# ifdef __FP_FAST_FMAL
56   	#  define FP_FAST_FMAL 1
57   	# endif
58   	
59   	#endif	/* ISO C99 */
60