1 /* Install given floating-point environment and raise exceptions.
2 Copyright (C) 1997-2022 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_libc.h>
20
21 int
__feupdateenv(const fenv_t * envp)22 __feupdateenv (const fenv_t *envp)
23 {
24 unsigned long int tmp;
25
26 /* Get the current exception state. */
27 tmp = __ieee_get_fp_control ();
28
29 /* Install new environment. */
30 __fesetenv (envp);
31
32 /* Raise the saved exception. Incidently for us the implementation
33 defined format of the values in objects of type fexcept_t is the
34 same as the ones specified using the FE_* constants. */
35 __feraiseexcept (tmp & SWCR_STATUS_MASK);
36
37 /* Success. */
38 return 0;
39 }
40
41 #include <shlib-compat.h>
42 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
43 strong_alias (__feupdateenv, __old_feupdateenv)
44 compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
45 #endif
46
47 libm_hidden_def (__feupdateenv)
48 libm_hidden_ver (__feupdateenv, feupdateenv)
49 versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);
50