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a8c79c40 | 1 | /* Install given floating-point environment and raise exceptions. |
b168057a | 2 | Copyright (C) 1997-2015 Free Software Foundation, Inc. |
a8c79c40 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
7 | modify it under the terms of the GNU Lesser General Public | |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
10 | ||
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
14 | Lesser General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU Lesser General Public | |
59ba27a6 PE |
17 | License along with the GNU C Library; if not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
a8c79c40 UD |
19 | |
20 | #include <fenv.h> | |
21 | ||
22 | int | |
23 | __feupdateenv (const fenv_t *envp) | |
24 | { | |
25 | fexcept_t temp; | |
26 | unsigned int xtemp; | |
27 | ||
28 | /* Save current exceptions. */ | |
29 | __asm__ ("fnstsw %0\n\tstmxcsr %1" : "=m" (*&temp), "=m" (xtemp)); | |
30 | temp = (temp | xtemp) & FE_ALL_EXCEPT; | |
31 | ||
32 | /* Install new environment. */ | |
33 | fesetenv (envp); | |
34 | ||
35 | /* Raise the saved exception. Incidently for us the implementation | |
36 | defined format of the values in objects of type fexcept_t is the | |
37 | same as the ones specified using the FE_* constants. */ | |
714fad23 | 38 | __feraiseexcept ((int) temp); |
a8c79c40 UD |
39 | |
40 | /* Success. */ | |
41 | return 0; | |
42 | } | |
43 | ||
44 | #include <shlib-compat.h> | |
45 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) | |
46 | strong_alias (__feupdateenv, __old_feupdateenv) | |
47 | compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1); | |
48 | #endif | |
49 | ||
9ff8d36f | 50 | libm_hidden_ver (__feupdateenv, feupdateenv) |
a8c79c40 | 51 | versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2); |