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01: /* Copyright (C) 2001, 2004, 2010 Free Software Foundation, Inc.
02:    This file is part of the GNU C Library.
03: 
04:    The GNU C Library is free software; you can redistribute it and/or
05:    modify it under the terms of the GNU Lesser General Public
06:    License as published by the Free Software Foundation; either
07:    version 2.1 of the License, or (at your option) any later version.
08: 
09:    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: /* The GCC 4.6 compiler will define __FP_FAST_FMA{,F,L} if the fma{,f,l}
49:    builtins are supported.  */
50: # if __FP_FAST_FMA
51: #  define FP_FAST_FMA 1
52: # endif
53: 
54: # if __FP_FAST_FMAF
55: #  define FP_FAST_FMAF 1
56: # endif
57: 
58: # if __FP_FAST_FMAL
59: #  define FP_FAST_FMAL 1
60: # endif
61: 
62: #endif  /* ISO C99 */
63: 

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