about summary refs log tree commit diff
path: root/math/test-fenv-clear-main.c
blob: 955df884c01f9b52c8a83892988f84f31f47f954 (plain) (blame)
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
/* Test fesetenv (FE_DFL_ENV) and fesetenv (FE_NOMASK_ENV) clear
   exceptions (bug 19181).
   Copyright (C) 2015-2020 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
   <https://www.gnu.org/licenses/>.  */

#include <fenv.h>
#include <float.h>
#include <stdio.h>

volatile float fa = 1.0f, fb = 0.0f, fc = FLT_MAX, fr;
volatile long double lda = 1.0L, ldb = 0.0L, ldc = LDBL_MAX, ldr;

static void
raise_exceptions (void)
{
  /* Raise exceptions both with feraiseexcept and arithmetic to allow
     for case of multiple floating-point units with separate
     exceptions state.  */
  feraiseexcept (FE_ALL_EXCEPT);
  fr = fb / fb;
  fr = fa / fb;
  fr = fc * fc;
  fr = fa / fc / fc;
  ldr = ldb / ldb;
  ldr = lda / ldb;
  ldr = ldc * ldc;
  ldr = lda / ldc / ldc;
}

static __attribute__ ((noinline)) int
run_tests (void)
{
  int result = 0;
  raise_exceptions ();
  if (fesetenv (FE_DFL_ENV) == 0)
    {
      puts ("PASS: fesetenv (FE_DFL_ENV)");
      if (fetestexcept (FE_ALL_EXCEPT) == 0)
	puts ("PASS: fesetenv (FE_DFL_ENV) clearing exceptions");
      else
	{
	  puts ("FAIL: fesetenv (FE_DFL_ENV) clearing exceptions");
	  result = 1;
	}
    }
  else
    {
      puts ("FAIL: fesetenv (FE_DFL_ENV)");
      result = 1;
    }
#ifdef FE_NOMASK_ENV
  raise_exceptions ();
  if (fesetenv (FE_NOMASK_ENV) == 0)
    {
      if (fetestexcept (FE_ALL_EXCEPT) == 0)
	puts ("PASS: fesetenv (FE_NOMASK_ENV) clearing exceptions");
      else
	{
	  puts ("FAIL: fesetenv (FE_NOMASK_ENV) clearing exceptions");
	  result = 1;
	}
    }
  else
    puts ("fesetenv (FE_NOMASK_ENV) failed, cannot test");
#endif
  return result;
}

static int
do_test (void)
{
  CHECK_CAN_TEST;
  return run_tests ();
}

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