1/* Test fegetenv preserves exception mask (bug 16198).
2 Copyright (C) 2014-2022 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.h>
20#include <stdio.h>
21
22static int
23do_test (void)
24{
25#if FE_ALL_EXCEPT
26 fenv_t env;
27
28 if (feenableexcept (FE_INVALID) != 0)
29 {
30 puts (s: "feenableexcept (FE_INVALID) failed, cannot test");
31 return 0;
32 }
33
34 if (fegetenv (envp: &env) != 0)
35 {
36 puts (s: "fegetenv failed, cannot test");
37 return 0;
38 }
39
40 int ret = fegetexcept ();
41 if (ret == FE_INVALID)
42 {
43 puts (s: "fegetenv preserved exception mask, OK");
44 return 0;
45 }
46 else
47 {
48 printf (format: "fegetexcept returned %d, expected %d\n", ret, FE_INVALID);
49 return 1;
50 }
51#else
52 puts ("No exceptions defined, cannot test");
53 return 0;
54#endif
55}
56
57#define TEST_FUNCTION do_test ()
58#include "../test-skeleton.c"
59

source code of glibc/math/test-fenv-preserve.c