math/test-fenv-return.c

   1 /* Test return value when setting FE_NOMASK_ENV (BZ16918, BZ17009).
   2    Copyright (C) 2014-2020 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 count_errors;
  24
  25 static void
  26 test_feenableexcept (void)
  27 {
  28 #if defined FE_ALL_EXCEPT
  29   int res;
  30
  31   fedisableexcept (FE_ALL_EXCEPT);
  32
  33   res = feenableexcept (FE_ALL_EXCEPT);
  34
  35   if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (res == -1))
  36     {
  37       puts ("feenableexcept (FE_ALL_EXCEPT) not supported, cannot test.");
  38       return;
  39     }
  40   else if (res != 0)
  41     {
  42       puts ("feenableexcept (FE_ALL_EXCEPT) failed");
  43       count_errors++;
  44     }
  45
  46   if (fegetexcept () != FE_ALL_EXCEPT)
  47     {
  48       puts ("feenableexcept did not set all exceptions");
  49       count_errors++;
  50     }
  51 #endif
  52 }
  53
  54 static void
  55 test_fesetenv (void)
  56 {
  57 #if defined FE_NOMASK_ENV && defined FE_ALL_EXCEPT
  58   int res;
  59
  60   fedisableexcept (FE_ALL_EXCEPT);
  61
  62   res = fesetenv (FE_NOMASK_ENV);
  63
  64   if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (res != 0))
  65     {
  66       puts ("fesetenv (FE_NOMASK_ENV) not supported, cannot test.");
  67       return;
  68     }
  69   else if (res != 0)
  70     {
  71       puts ("fesetenv (FE_NOMASK_ENV) failed");
  72       count_errors++;
  73     }
  74
  75   if (fegetexcept () != FE_ALL_EXCEPT)
  76     {
  77       puts ("fesetenv did not set all exceptions");
  78       count_errors++;
  79     }
  80 #endif
  81 }
  82
  83 static void
  84 test_feupdateenv (void)
  85 {
  86 #if defined FE_NOMASK_ENV && defined FE_ALL_EXCEPT
  87   int res;
  88
  89   fedisableexcept (FE_ALL_EXCEPT);
  90
  91   res = feupdateenv (FE_NOMASK_ENV);
  92
  93   if (!EXCEPTION_ENABLE_SUPPORTED (FE_ALL_EXCEPT) && (res != 0))
  94     {
  95       puts ("feupdateenv (FE_NOMASK_ENV)) not supported, cannot test.");
  96       return;
  97     }
  98   else if (res != 0)
  99     {
 100       puts ("feupdateenv (FE_NOMASK_ENV) failed");
 101       count_errors++;
 102     }
 103
 104   if (fegetexcept () != FE_ALL_EXCEPT)
 105     {
 106       puts ("feupdateenv did not set all exceptions");
 107       count_errors++;
 108     }
 109 #endif
 110 }
 111
 112 static int
 113 do_test (void)
 114 {
 115   test_feenableexcept ();
 116   test_fesetenv ();
 117   test_feupdateenv ();
 118
 119   return count_errors != 0 ? 1 : 0;
 120 }
 121
 122 #define TEST_FUNCTION do_test ()
 123 #include "../test-skeleton.c"