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5f72b005 | 1 | /* Install given floating-point environment and raise exceptions. |
d614a753 | 2 | Copyright (C) 2018-2020 Free Software Foundation, Inc. |
5f72b005 MH |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5f72b005 MH |
18 | |
19 | #include <fenv.h> | |
20 | #include <fpu_control.h> | |
21 | #include <fenv_libc.h> | |
22 | #include <fenv_private.h> | |
23 | #include <stdio.h> | |
24 | ||
25 | int | |
26 | __feupdateenv (const fenv_t *envp) | |
27 | { | |
28 | int temp; | |
29 | ||
30 | /* Save current exceptions. */ | |
31 | _FPU_GETFPSR (temp); | |
32 | temp = (temp >> CAUSE_SHIFT) & FE_ALL_EXCEPT; | |
33 | /* Install new environment. */ | |
34 | __fesetenv (envp); | |
35 | ||
36 | /* Raise the safed exception. Incidently for us the implementation | |
37 | defined format of the values in objects of type fexcept_t is the | |
38 | same as the ones specified using the FE_* constants. */ | |
39 | feraiseexcept (temp); | |
40 | ||
41 | /* Success. */ | |
42 | return 0; | |
43 | } | |
44 | libm_hidden_def (__feupdateenv) | |
45 | weak_alias (__feupdateenv, feupdateenv) | |
46 | libm_hidden_weak (feupdateenv) |