math/test-fesetexcept-traps.c

   1 /* Test fesetexcept: exception traps enabled.
   2    Copyright (C) 2016-2020 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 do_test (void)
  25 {
  26   int result = 0;
  27
  28   fedisableexcept (FE_ALL_EXCEPT);
  29   int ret = feenableexcept (FE_ALL_EXCEPT);
  30   if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (ret == -1))
  31     {
  32       puts ("feenableexcept (FE_ALL_EXCEPT) not supported, cannot test");
  33       return 77;
  34     }
  35   else if (ret != 0)
  36     {
  37       puts ("feenableexcept (FE_ALL_EXCEPT) failed");
  38       result = 1;
  39       return result;
  40     }
  41
  42   if (EXCEPTION_SET_FORCES_TRAP)
  43     {
  44       puts ("setting exceptions traps, cannot test on this architecture");
  45       return 77;
  46     }
  47   /* Verify fesetexcept does not cause exception traps.  */
  48   ret = fesetexcept (FE_ALL_EXCEPT);
  49   if (ret == 0)
  50     puts ("fesetexcept (FE_ALL_EXCEPT) succeeded");
  51   else
  52     {
  53       puts ("fesetexcept (FE_ALL_EXCEPT) failed");
  54       if (EXCEPTION_TESTS (float))
  55         {
  56           puts ("failure of fesetexcept was unexpected");
  57           result = 1;
  58         }
  59       else
  60         puts ("failure of fesetexcept OK");
  61     }
  62   feclearexcept (FE_ALL_EXCEPT);
  63
  64   return result;
  65 }
  66
  67 #define TEST_FUNCTION do_test ()
  68 #include "../test-skeleton.c"