projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| f7a9f785 | 1 | /* Copyright (C) 1999-2016 Free Software Foundation, Inc. |
| 30010c63 UD |
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 | |
| 41bdb6e2 AJ |
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. | |
| 30010c63 UD |
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 | |
| 41bdb6e2 | 12 | Lesser General Public License for more details. |
| 30010c63 | 13 | |
| 41bdb6e2 | 14 | You should have received a copy of the GNU Lesser General Public |
| 59ba27a6 PE |
15 | License along with the GNU C Library; if not, see |
| 16 | <http://www.gnu.org/licenses/>. */ | |
| 30010c63 UD |
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 | |
| 24 | of the appropriate bits in the FPU control word. */ | |
| 25 | enum | |
| 26 | { | |
| fbeafede JM |
27 | FE_INEXACT = |
| 28 | #define FE_INEXACT 0x04 | |
| 29 | FE_INEXACT, | |
| 30 | FE_UNDERFLOW = | |
| 31 | #define FE_UNDERFLOW 0x08 | |
| 32 | FE_UNDERFLOW, | |
| 33 | FE_OVERFLOW = | |
| 34 | #define FE_OVERFLOW 0x10 | |
| 35 | FE_OVERFLOW, | |
| 36 | FE_DIVBYZERO = | |
| 37 | #define FE_DIVBYZERO 0x20 | |
| 38 | FE_DIVBYZERO, | |
| 39 | FE_INVALID = | |
| 40 | #define FE_INVALID 0x40 | |
| 41 | FE_INVALID, | |
| 30010c63 UD |
42 | }; |
| 43 | ||
| 44 | #define FE_ALL_EXCEPT \ | |
| 45 | (FE_INEXACT | FE_DIVBYZERO | FE_UNDERFLOW | FE_OVERFLOW | FE_INVALID) | |
| 46 | ||
| 99ff6e5c TS |
47 | /* The SH FPU supports two of the four defined rounding modes: round to nearest |
| 48 | and round to zero. We use again the bit positions in the FPU control word | |
| 49 | as the values for the appropriate macros. */ | |
| 30010c63 UD |
50 | enum |
| 51 | { | |
| 99ff6e5c TS |
52 | __FE_UNDEFINED = -1, |
| 53 | ||
| fbeafede JM |
54 | FE_TONEAREST = |
| 55 | #define FE_TONEAREST 0x0 | |
| 56 | FE_TONEAREST, | |
| 57 | FE_TOWARDZERO = | |
| 58 | #define FE_TOWARDZERO 0x1 | |
| 59 | FE_TOWARDZERO, | |
| 30010c63 UD |
60 | }; |
| 61 | ||
| 62 | ||
| 63 | /* Type representing exception flags. */ | |
| 64 | typedef unsigned short int fexcept_t; | |
| 65 | ||
| 66 | ||
| 67 | /* Type representing floating-point environment. This function corresponds | |
| 68 | to the layout of the block written by the `fstenv'. */ | |
| 69 | typedef struct | |
| 70 | { | |
| 71 | unsigned int __fpscr; | |
| 72 | } | |
| 73 | fenv_t; | |
| 74 | ||
| 75 | /* If the default argument is used we use this value. */ | |
| acfa885f | 76 | #define FE_DFL_ENV ((const fenv_t *) -1) |