math/test-fesetexcept.c

   1 /* Test fesetexcept.
   2    Copyright (C) 2016-2019 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
  24 test_fesetexcept (int exc, const char *exc_name)
  25 {
  26   int result = 0;
  27
  28   printf ("Testing %s\n", exc_name);
  29   feclearexcept (FE_ALL_EXCEPT);
  30   int ret = fesetexcept (exc);
  31   if (ret == 0)
  32     printf ("fesetexcept (%s) succeeded\n", exc_name);
  33   else
  34     {
  35       printf ("fesetexcept (%s) failed\n", exc_name);
  36       if (exc == 0 || EXCEPTION_TESTS (float))
  37         {
  38           puts ("failure of fesetexcept was unexpected");
  39           result = 1;
  40         }
  41       else
  42         puts ("failure of fesetexcept OK, skipping further tests");
  43       return result;
  44     }
  45   ret = fetestexcept (FE_ALL_EXCEPT);
  46   if (ret != exc)
  47     {
  48       printf ("raised exceptions %x, expected %x\n",
  49               (unsigned int) ret, (unsigned int) exc);
  50       result = 1;
  51     }
  52
  53   ret = feraiseexcept (FE_ALL_EXCEPT);
  54   if (ret != 0)
  55     {
  56       if (exc == 0 && !EXCEPTION_TESTS (float))
  57         {
  58           puts ("feraiseexcept (FE_ALL_EXCEPT) failed, skipping further tests");
  59           return result;
  60         }
  61       puts ("feraiseexcept (FE_ALL_EXCEPT) unexpectedly failed");
  62       result = 1;
  63     }
  64   ret = fesetexcept (exc);
  65   if (ret != 0)
  66     {
  67       puts ("fesetexcept (second test) unexpectedly failed");
  68       result = 1;
  69     }
  70   ret = fetestexcept (FE_ALL_EXCEPT);
  71   if (ret != FE_ALL_EXCEPT)
  72     {
  73       printf ("raised exceptions (second test) %x, expected %x\n",
  74               (unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);
  75       result = 1;
  76     }
  77
  78   feclearexcept (FE_ALL_EXCEPT);
  79   ret = feraiseexcept (FE_ALL_EXCEPT & ~exc);
  80   if (ret != 0)
  81     {
  82       puts ("feraiseexcept (third test) unexpectedly failed");
  83       result = 1;
  84     }
  85   ret = fesetexcept (exc);
  86   if (ret != 0)
  87     {
  88       puts ("fesetexcept (third test) unexpectedly failed");
  89       result = 1;
  90     }
  91   ret = fetestexcept (FE_ALL_EXCEPT);
  92   if (ret != FE_ALL_EXCEPT)
  93     {
  94       printf ("raised exceptions (third test) %x, expected %x\n",
  95               (unsigned int) ret, (unsigned int) FE_ALL_EXCEPT);
  96       result = 1;
  97     }
  98
  99   return result;
 100 }
 101
 102 static int
 103 do_test (void)
 104 {
 105   int result = 0;
 106
 107   result |= test_fesetexcept (0, "0");
 108   result |= test_fesetexcept (FE_ALL_EXCEPT, "FE_ALL_EXCEPT");
 109 #ifdef FE_DIVBYZERO
 110   result |= test_fesetexcept (FE_DIVBYZERO, "FE_DIVBYZERO");
 111 #endif
 112 #ifdef FE_INEXACT
 113   result |= test_fesetexcept (FE_INEXACT, "FE_INEXACT");
 114 #endif
 115 #ifdef FE_INVALID
 116   result |= test_fesetexcept (FE_INVALID, "FE_INVALID");
 117 #endif
 118 #ifdef FE_OVERFLOW
 119   result |= test_fesetexcept (FE_OVERFLOW, "FE_OVERFLOW");
 120 #endif
 121 #ifdef FE_UNDERFLOW
 122   result |= test_fesetexcept (FE_UNDERFLOW, "FE_UNDERFLOW");
 123 #endif
 124
 125   return result;
 126 }
 127
 128 #define TEST_FUNCTION do_test ()
 129 #include "../test-skeleton.c"