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 
23 static int
do_test(void)24 do_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 ("feraiseexcept (FE_ALL_EXCEPT) failed");
35 	  result = 1;
36 	  return result;
37 	}
38       else
39 	{
40 	  puts ("feraiseexcept (FE_ALL_EXCEPT) unsupported, cannot test");
41 	  return 77;
42 	}
43     }
44   fexcept_t saved;
45   ret = fegetexceptflag (&saved, FE_ALL_EXCEPT);
46   if (ret != 0)
47     {
48       puts ("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 ("feenableexcept (FE_ALL_EXCEPT) not supported, cannot test");
58       return 77;
59     }
60   else if (ret != 0)
61     {
62       puts ("feenableexcept (FE_ALL_EXCEPT) failed");
63       result = 1;
64     }
65 
66   if (EXCEPTION_SET_FORCES_TRAP)
67     {
68       puts ("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 (&saved, FE_ALL_EXCEPT);
73   if (ret != 0)
74     {
75       puts ("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