1 | /* Install given floating-point environment. |
2 | Copyright (C) 1997-2024 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 <fenv_private.h> |
21 | #include <shlib-compat.h> |
22 | |
23 | int |
24 | __fesetenv (const fenv_t *envp) |
25 | { |
26 | fenv_t dummy; |
27 | |
28 | /* Put these constants in memory explicitly, so as to cope with a |
29 | -fPIC bug as of gcc 970624. Making them automatic is quicker |
30 | than loading up the pic register in this instance. */ |
31 | |
32 | if (envp == FE_DFL_ENV) |
33 | { |
34 | dummy = 0; |
35 | envp = &dummy; |
36 | } |
37 | else if (envp == FE_NOMASK_ENV) |
38 | { |
39 | dummy = 0x1f << 23; |
40 | envp = &dummy; |
41 | } |
42 | |
43 | __fenv_ldfsr (*envp); |
44 | |
45 | /* Success. */ |
46 | return 0; |
47 | } |
48 | |
49 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
50 | strong_alias (__fesetenv, __old_fesetenv) |
51 | compat_symbol (libm, __old_fesetenv, fesetenv, GLIBC_2_1); |
52 | #endif |
53 | |
54 | libm_hidden_def (__fesetenv) |
55 | libm_hidden_ver (__fesetenv, fesetenv) |
56 | versioned_symbol (libm, __fesetenv, fesetenv, GLIBC_2_2); |
57 | |