projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 5fe2647d | 1 | /* fpclassify(). LoongArch version. |
| dff8da6b | 2 | Copyright (C) 2017-2024 Free Software Foundation, Inc. |
| 5fe2647d XT |
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 | <https://www.gnu.org/licenses/>. */ | |
| 18 | ||
| 19 | #include <math.h> | |
| 20 | #include <fenv_private.h> | |
| 21 | ||
| 22 | int | |
| 23 | __fpclassify (double x) | |
| 24 | { | |
| 25 | int cls; | |
| 26 | asm volatile ("fclass.d \t%0, %1" : "=f" (cls) : "f" (x)); | |
| 27 | ||
| 28 | if (__glibc_likely (!!(cls & _FCLASS_NORM))) | |
| 29 | return FP_NORMAL; | |
| 30 | if (__glibc_likely (!!(cls & _FCLASS_ZERO))) | |
| 31 | return FP_ZERO; | |
| 32 | if (__glibc_likely (!!(cls & _FCLASS_SUBNORM))) | |
| 33 | return FP_SUBNORMAL; | |
| 34 | if (__glibc_likely (!!(cls & _FCLASS_INF))) | |
| 35 | return FP_INFINITE; | |
| 36 | return FP_NAN; | |
| 37 | } | |
| 38 | libm_hidden_def (__fpclassify) |