1 /* Install given floating-point environment and raise exceptions.
2 Copyright (C) 1997-2021 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 <fenv_private.h>
21 #include <shlib-compat.h>
22
23 int
__feupdateenv(const fenv_t * envp)24 __feupdateenv (const fenv_t *envp)
25 {
26 fexcept_t tmp;
27
28 /* Save current exceptions. */
29 __fenv_stfsr (tmp);
30 tmp &= FE_ALL_EXCEPT;
31
32 /* Install new environment. */
33 __fesetenv (envp);
34
35 /* Raise the safed 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. */
38 __feraiseexcept ((int) tmp);
39
40 /* Success. */
41 return 0;
42 }
43
44 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
45 strong_alias (__feupdateenv, __old_feupdateenv)
46 compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
47 #endif
48
49 libm_hidden_def (__feupdateenv)
50 libm_hidden_ver (__feupdateenv, feupdateenv)
51 versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
52