float.h revision 224145 
1/*===---- float.h - Characteristics of floating point types ----------------===
2 *
3 * Permission is hereby granted, free of charge, to any person obtaining a copy
4 * of this software and associated documentation files (the "Software"), to deal
5 * in the Software without restriction, including without limitation the rights
6 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
7 * copies of the Software, and to permit persons to whom the Software is
8 * furnished to do so, subject to the following conditions:
9 *
10 * The above copyright notice and this permission notice shall be included in
11 * all copies or substantial portions of the Software.
12 *
13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
18 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
19 * THE SOFTWARE.
20 *
21 *===-----------------------------------------------------------------------===
22 */
23
24#ifndef __FLOAT_H
25#define __FLOAT_H
26
27/* If we're on MinGW, fall baack to the system's float.h, which might have
28 * additional definitions provided for Windows.
29 * For more details see http://msdn.microsoft.com/en-us/library/y0ybw9fy.aspx
30 */
31#if defined(__MINGW32__) && \
32    defined(__has_include_next) && __has_include_next(<float.h>)
33#  include_next <float.h>
34
35/* Undefine anything that we'll be redefining below. */
36#  undef FLT_EVAL_METHOD
37#  undef FLT_ROUNDS
38#  undef FLT_RADIX
39#  undef FLT_MANT_DIG
40#  undef DBL_MANT_DIG
41#  undef LDBL_MANT_DIG
42#  undef DECIMAL_DIG
43#  undef FLT_DIG
44#  undef DBL_DIG
45#  undef LDBL_DIG
46#  undef FLT_MIN_EXP
47#  undef DBL_MIN_EXP
48#  undef LDBL_MIN_EXP
49#  undef FLT_MIN_10_EXP
50#  undef DBL_MIN_10_EXP
51#  undef LDBL_MIN_10_EXP
52#  undef FLT_MAX_EXP
53#  undef DBL_MAX_EXP
54#  undef LDBL_MAX_EXP
55#  undef FLT_MAX_10_EXP
56#  undef DBL_MAX_10_EXP
57#  undef LDBL_MAX_10_EXP
58#  undef FLT_MAX
59#  undef DBL_MAX
60#  undef LDBL_MAX
61#  undef FLT_EPSILON
62#  undef DBL_EPSILON
63#  undef LDBL_EPSILON
64#  undef FLT_MIN
65#  undef DBL_MIN
66#  undef LDBL_MIN
67#endif
68
69/* Characteristics of floating point types, C99 5.2.4.2.2 */
70
71#define FLT_EVAL_METHOD __FLT_EVAL_METHOD__
72#define FLT_ROUNDS (__builtin_flt_rounds())
73#define FLT_RADIX __FLT_RADIX__
74
75#define FLT_MANT_DIG __FLT_MANT_DIG__
76#define DBL_MANT_DIG __DBL_MANT_DIG__
77#define LDBL_MANT_DIG __LDBL_MANT_DIG__
78
79#define DECIMAL_DIG __DECIMAL_DIG__
80
81#define FLT_DIG __FLT_DIG__
82#define DBL_DIG __DBL_DIG__
83#define LDBL_DIG __LDBL_DIG__
84
85#define FLT_MIN_EXP __FLT_MIN_EXP__
86#define DBL_MIN_EXP __DBL_MIN_EXP__
87#define LDBL_MIN_EXP __LDBL_MIN_EXP__
88
89#define FLT_MIN_10_EXP __FLT_MIN_10_EXP__
90#define DBL_MIN_10_EXP __DBL_MIN_10_EXP__
91#define LDBL_MIN_10_EXP __LDBL_MIN_10_EXP__
92
93#define FLT_MAX_EXP __FLT_MAX_EXP__
94#define DBL_MAX_EXP __DBL_MAX_EXP__
95#define LDBL_MAX_EXP __LDBL_MAX_EXP__
96
97#define FLT_MAX_10_EXP __FLT_MAX_10_EXP__
98#define DBL_MAX_10_EXP __DBL_MAX_10_EXP__
99#define LDBL_MAX_10_EXP __LDBL_MAX_10_EXP__
100
101#define FLT_MAX __FLT_MAX__
102#define DBL_MAX __DBL_MAX__
103#define LDBL_MAX __LDBL_MAX__
104
105#define FLT_EPSILON __FLT_EPSILON__
106#define DBL_EPSILON __DBL_EPSILON__
107#define LDBL_EPSILON __LDBL_EPSILON__
108
109#define FLT_MIN __FLT_MIN__
110#define DBL_MIN __DBL_MIN__
111#define LDBL_MIN __LDBL_MIN__
112
113#endif /* __FLOAT_H */
114