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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 back 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 */ | |
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