| 1 | /* Install given floating-point environment (does not raise exceptions). |
|---|
| 2 | Copyright (C) 2020-2024 Free Software Foundation, Inc. |
|---|
| 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 <fenv.h> |
|---|
| 20 | #include <fpu_control.h> |
|---|
| 21 | |
|---|
| 22 | int |
|---|
| 23 | __fesetenv (const fenv_t *envp) |
|---|
| 24 | { |
|---|
| 25 | unsigned int fpcr; |
|---|
| 26 | unsigned int fpsr; |
|---|
| 27 | |
|---|
| 28 | if (envp == FE_DFL_ENV) |
|---|
| 29 | { |
|---|
| 30 | fpcr = _FPU_DEFAULT; |
|---|
| 31 | fpsr = _FPU_FPSR_DEFAULT; |
|---|
| 32 | } |
|---|
| 33 | else |
|---|
| 34 | { |
|---|
| 35 | /* No need to mask out reserved bits as they are IoW. */ |
|---|
| 36 | fpcr = envp->__fpcr; |
|---|
| 37 | fpsr = envp->__fpsr; |
|---|
| 38 | } |
|---|
| 39 | |
|---|
| 40 | _FPU_SETCW (fpcr); |
|---|
| 41 | _FPU_SETS (fpsr); |
|---|
| 42 | |
|---|
| 43 | /* Success. */ |
|---|
| 44 | return 0; |
|---|
| 45 | } |
|---|
| 46 | libm_hidden_def (__fesetenv) |
|---|
| 47 | weak_alias (__fesetenv, fesetenv) |
|---|
| 48 | libm_hidden_weak (fesetenv) |
|---|
| 49 | |
|---|
