math/test-fenv-preserve.c

   1 /* Test fegetenv preserves exception mask (bug 16198).
   2    Copyright (C) 2014 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <stdio.h>
  21
  22 static int
  23 do_test (void)
  24 {
  25   fenv_t env;
  26
  27   if (feenableexcept (FE_INVALID) != 0)
  28     {
  29       puts ("feenableexcept (FE_INVALID) failed, cannot test");
  30       return 0;
  31     }
  32
  33   if (fegetenv (&env) != 0)
  34     {
  35       puts ("fegetenv failed, cannot test");
  36       return 0;
  37     }
  38
  39   int ret = fegetexcept ();
  40   if (ret == FE_INVALID)
  41     {
  42       puts ("fegetenv preserved exception mask, OK");
  43       return 0;
  44     }
  45   else
  46     {
  47       printf ("fegetexcept returned %d, expected %d\n", ret, FE_INVALID);
  48       return 1;
  49     }
  50 }
  51
  52 #define TEST_FUNCTION do_test ()
  53 #include "../test-skeleton.c"