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04277e02 | 1 | /* Copyright (C) 1999-2019 Free Software Foundation, Inc. |
d5efd131 MF |
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 | |
75efb018 MF |
15 | License along with the GNU C Library; if not, see |
16 | <http://www.gnu.org/licenses/>. */ | |
d5efd131 MF |
17 | |
18 | #ifndef _FENV_H | |
19 | # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." | |
20 | #endif | |
21 | ||
22 | ||
23 | /* Define bits representing the exception. We use the bit positions of | |
24 | the appropriate bits in the FPSR... (Tahoe EAS 2.4 5-4)*/ | |
25 | ||
26 | enum | |
27 | { | |
fbeafede JM |
28 | FE_INEXACT = |
29 | #define FE_INEXACT (1 << 5) | |
30 | FE_INEXACT, | |
d5efd131 | 31 | |
fbeafede JM |
32 | FE_UNDERFLOW = |
33 | #define FE_UNDERFLOW (1 << 4) | |
34 | FE_UNDERFLOW, | |
d5efd131 | 35 | |
fbeafede JM |
36 | FE_OVERFLOW = |
37 | #define FE_OVERFLOW (1 << 3) | |
38 | FE_OVERFLOW, | |
d5efd131 | 39 | |
fbeafede JM |
40 | FE_DIVBYZERO = |
41 | #define FE_DIVBYZERO (1 << 2) | |
42 | FE_DIVBYZERO, | |
d5efd131 | 43 | |
fbeafede JM |
44 | FE_UNNORMAL = |
45 | #define FE_UNNORMAL (1 << 1) | |
46 | FE_UNNORMAL, | |
d5efd131 | 47 | |
fbeafede JM |
48 | FE_INVALID = |
49 | #define FE_INVALID (1 << 0) | |
50 | FE_INVALID, | |
d5efd131 MF |
51 | |
52 | FE_ALL_EXCEPT = | |
fbeafede JM |
53 | #define FE_ALL_EXCEPT (FE_INEXACT | FE_UNDERFLOW | FE_OVERFLOW | FE_DIVBYZERO | FE_UNNORMAL | FE_INVALID) |
54 | FE_ALL_EXCEPT | |
d5efd131 MF |
55 | }; |
56 | ||
57 | ||
58 | enum | |
59 | { | |
fbeafede JM |
60 | FE_TOWARDZERO = |
61 | #define FE_TOWARDZERO 3 | |
62 | FE_TOWARDZERO, | |
d5efd131 | 63 | |
fbeafede JM |
64 | FE_UPWARD = |
65 | #define FE_UPWARD 2 | |
66 | FE_UPWARD, | |
d5efd131 | 67 | |
fbeafede JM |
68 | FE_DOWNWARD = |
69 | #define FE_DOWNWARD 1 | |
70 | FE_DOWNWARD, | |
d5efd131 | 71 | |
fbeafede JM |
72 | FE_TONEAREST = |
73 | #define FE_TONEAREST 0 | |
74 | FE_TONEAREST, | |
d5efd131 MF |
75 | }; |
76 | ||
77 | ||
78 | /* Type representing exception flags. */ | |
79 | typedef unsigned long int fexcept_t; | |
80 | ||
81 | /* Type representing floating-point environment. */ | |
82 | typedef unsigned long int fenv_t; | |
83 | ||
84 | /* If the default argument is used we use this value. */ | |
293432b4 | 85 | #define FE_DFL_ENV ((const fenv_t *) 0xc009804c0270033fUL) |
d5efd131 MF |
86 | |
87 | #ifdef __USE_GNU | |
88 | /* Floating-point environment where only FE_UNNORMAL is masked since this | |
89 | exception is not generally supported by glibc. */ | |
293432b4 | 90 | # define FE_NOMASK_ENV ((const fenv_t *) 0xc009804c02700302UL) |
d5efd131 MF |
91 | |
92 | /* Floating-point environment with (processor-dependent) non-IEEE | |
93 | floating point. In this case, turning on flush-to-zero mode for | |
94 | s0, s2, and s3. */ | |
293432b4 | 95 | # define FE_NONIEEE_ENV ((const fenv_t *) 0xc009a04d0270037fUL) |
d5efd131 | 96 | #endif |
ec94343f JM |
97 | |
98 | #if __GLIBC_USE (IEC_60559_BFP_EXT) | |
99 | /* Type representing floating-point control modes. */ | |
100 | typedef unsigned long int femode_t; | |
101 | ||
102 | /* Default floating-point control modes. */ | |
103 | # define FE_DFL_MODE ((const femode_t *) 0xc009804c0270033fUL) | |
104 | #endif |