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67236aeb | 1 | /* Floating point environment, RISC-V version. |
04277e02 | 2 | Copyright (C) 1998-2019 Free Software Foundation, Inc. |
67236aeb PD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
6 | modify it under the terms of the GNU Lesser General Public | |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
9 | ||
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
13 | Lesser General Public License for more details. | |
14 | ||
15 | You should have received a copy of the GNU Lesser General Public | |
16 | License along with the GNU C Library. If not, see | |
17 | <http://www.gnu.org/licenses/>. */ | |
18 | ||
19 | #ifndef _FENV_H | |
20 | # error "Never use <bits/fenv.h> directly; include <fenv.h> instead." | |
21 | #endif | |
22 | ||
23 | enum | |
24 | { | |
25 | FE_INEXACT = | |
26 | #define FE_INEXACT (0x01) | |
27 | FE_INEXACT, | |
28 | FE_UNDERFLOW = | |
29 | #define FE_UNDERFLOW (0x02) | |
30 | FE_UNDERFLOW, | |
31 | FE_OVERFLOW = | |
32 | #define FE_OVERFLOW (0x04) | |
33 | FE_OVERFLOW, | |
34 | FE_DIVBYZERO = | |
35 | #define FE_DIVBYZERO (0x08) | |
36 | FE_DIVBYZERO, | |
37 | FE_INVALID = | |
38 | #define FE_INVALID (0x10) | |
39 | FE_INVALID | |
40 | }; | |
41 | ||
42 | #define FE_ALL_EXCEPT \ | |
43 | (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) | |
44 | ||
45 | enum | |
46 | { | |
47 | FE_TONEAREST = | |
48 | #define FE_TONEAREST (0x0) | |
49 | FE_TONEAREST, | |
50 | FE_TOWARDZERO = | |
51 | #define FE_TOWARDZERO (0x1) | |
52 | FE_TOWARDZERO, | |
53 | FE_DOWNWARD = | |
54 | #define FE_DOWNWARD (0x2) | |
55 | FE_DOWNWARD, | |
56 | FE_UPWARD = | |
57 | #define FE_UPWARD (0x3) | |
58 | FE_UPWARD | |
59 | }; | |
60 | ||
61 | ||
62 | typedef unsigned int fexcept_t; | |
63 | typedef unsigned int fenv_t; | |
64 | ||
65 | /* If the default argument is used we use this value. */ | |
66 | #define FE_DFL_ENV ((__const fenv_t *) -1) | |
67 | ||
68 | #if __GLIBC_USE (IEC_60559_BFP_EXT) | |
69 | /* Type representing floating-point control modes. */ | |
70 | typedef unsigned int femode_t; | |
71 | ||
72 | /* Default floating-point control modes. */ | |
73 | # define FE_DFL_MODE ((const femode_t *) -1L) | |
74 | #endif |