1/* Test fegetexceptflag and fesetexceptflag: exception traps enabled.
2 Copyright (C) 2016-2022 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#include <math-tests.h>
22
23static int
24do_test (void)
25{
26 int result = 0;
27
28 fedisableexcept (FE_ALL_EXCEPT);
29 int ret = feraiseexcept (FE_ALL_EXCEPT);
30 if (ret != 0)
31 {
32 if (EXCEPTION_TESTS (float))
33 {
34 puts (s: "feraiseexcept (FE_ALL_EXCEPT) failed");
35 result = 1;
36 return result;
37 }
38 else
39 {
40 puts (s: "feraiseexcept (FE_ALL_EXCEPT) unsupported, cannot test");
41 return 77;
42 }
43 }
44 fexcept_t saved;
45 ret = fegetexceptflag (flagp: &saved, FE_ALL_EXCEPT);
46 if (ret != 0)
47 {
48 puts (s: "fegetexceptflag failed");
49 result = 1;
50 return result;
51 }
52 feclearexcept (FE_ALL_EXCEPT);
53
54 ret = feenableexcept (FE_ALL_EXCEPT);
55 if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (ret == -1))
56 {
57 puts (s: "feenableexcept (FE_ALL_EXCEPT) not supported, cannot test");
58 return 77;
59 }
60 else if (ret != 0)
61 {
62 puts (s: "feenableexcept (FE_ALL_EXCEPT) failed");
63 result = 1;
64 }
65
66 if (EXCEPTION_SET_FORCES_TRAP)
67 {
68 puts (s: "setting exceptions traps, cannot test on this architecture");
69 return 77;
70 }
71 /* The test is that this does not cause exception traps. */
72 ret = fesetexceptflag (flagp: &saved, FE_ALL_EXCEPT);
73 if (ret != 0)
74 {
75 puts (s: "fesetexceptflag failed");
76 result = 1;
77 }
78 feclearexcept (FE_ALL_EXCEPT);
79
80 return result;
81}
82
83#define TEST_FUNCTION do_test ()
84#include "../test-skeleton.c"
85

source code of glibc/math/test-fexcept-traps.c