aboutsummaryrefslogtreecommitdiff
path: root/math/test-femode-traps.c
blob: ce9d46339ccc8e64db976c3ef23ba75ccf2e90ae (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
/* Test femode_t functions: test handling of exception traps.
   Copyright (C) 2016-2018 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#include <fenv.h>
#include <stdio.h>
#include <math-tests.h>

static int
test_ee (int exc1, int exc2)
{
  int result = 0;
  printf ("testing %x %x\n", (unsigned int) exc1, (unsigned int) exc2);

  fedisableexcept (FE_ALL_EXCEPT);
  int ret = feenableexcept (exc1);
  if (ret == -1)
    {
      if (EXCEPTION_ENABLE_SUPPORTED (exc1))
	{
	  puts ("first feenableexcept failed unexpectedly");
	  result = 1;
	}
      else
	puts ("first feenableexcept failed, cannot test");
      return result;
    }
  femode_t saved;
  ret = fegetmode (&saved);
  if (ret != 0)
    {
      puts ("fegetmode failed");
      result = 1;
      return result;
    }
  fedisableexcept (FE_ALL_EXCEPT);
  ret = feenableexcept (exc2);
  if (ret == -1)
    {
      if (EXCEPTION_ENABLE_SUPPORTED (exc2))
	{
	  puts ("second feenableexcept failed unexpectedly");
	  result = 1;
	}
      else
	puts ("second feenableexcept failed, cannot test");
      return result;
    }
  ret = fesetmode (&saved);
  if (ret != 0)
    {
      puts ("fesetmode failed");
      result = 1;
      return result;
    }
  /* Verify that the set of enabled traps was restored.  */
  ret = fegetexcept ();
  if (ret != exc1)
    {
      printf ("restored enabled traps %x not %x\n", (unsigned int) ret,
	      (unsigned int) exc1);
      result = 1;
    }
  /* Likewise, with default modes.  */
  ret = fesetmode (FE_DFL_MODE);
  if (ret != 0)
    {
      puts ("fesetmode (FE_DFL_MODE) failed");
      result = 1;
      return result;
    }
  ret = fegetexcept ();
  if (ret != 0)
    {
      printf ("FE_DFL_MODE enabled traps %x not 0\n", (unsigned int) ret);
      result = 1;
    }

  return result;
}

static int
test_e (int exc1)
{
  int result = 0;

  result |= test_ee (exc1, 0);
  result |= test_ee (exc1, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
  result |= test_ee (exc1, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
  result |= test_ee (exc1, FE_INEXACT);
#endif
#ifdef FE_INVALID
  result |= test_ee (exc1, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
  result |= test_ee (exc1, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
  result |= test_ee (exc1, FE_UNDERFLOW);
#endif

  return result;
}

static int
do_test (void)
{
  int result = 0;

  result |= test_e (0);
  result |= test_e (FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
  result |= test_e (FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
  result |= test_e (FE_INEXACT);
#endif
#ifdef FE_INVALID
  result |= test_e (FE_INVALID);
#endif
#ifdef FE_OVERFLOW
  result |= test_e (FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
  result |= test_e (FE_UNDERFLOW);
#endif

  return result;
}

#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"