1/* Copyright (C) 2001-2014 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. */
28typedef float float_t; /* `float' expressions are evaluated as `float'. */
29typedef 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: */
35typedef long double float_t; /* `float' expressions are evaluated as
36 `long double'. */
37typedef 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# if __FP_FAST_FMA
48# define FP_FAST_FMA 1
49# endif
50
51# if __FP_FAST_FMAF
52# define FP_FAST_FMAF 1
53# endif
54
55# if __FP_FAST_FMAL
56# define FP_FAST_FMAL 1
57# endif
58
59#endif /* ISO C99 */
60