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150 lines
3.4 KiB
C
150 lines
3.4 KiB
C
/* Test femode_t functions: test handling of exception traps.
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Copyright (C) 2016-2020 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <fenv.h>
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#include <stdio.h>
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#include <math-tests.h>
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static int
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test_ee (int exc1, int exc2)
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{
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int result = 0;
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printf ("testing %x %x\n", (unsigned int) exc1, (unsigned int) exc2);
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fedisableexcept (FE_ALL_EXCEPT);
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int ret = feenableexcept (exc1);
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if (ret == -1)
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{
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if (EXCEPTION_ENABLE_SUPPORTED (exc1))
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{
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puts ("first feenableexcept failed unexpectedly");
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result = 1;
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}
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else
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puts ("first feenableexcept failed, cannot test");
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return result;
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}
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femode_t saved;
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ret = fegetmode (&saved);
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if (ret != 0)
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{
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puts ("fegetmode failed");
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result = 1;
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return result;
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}
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fedisableexcept (FE_ALL_EXCEPT);
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ret = feenableexcept (exc2);
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if (ret == -1)
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{
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if (EXCEPTION_ENABLE_SUPPORTED (exc2))
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{
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puts ("second feenableexcept failed unexpectedly");
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result = 1;
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}
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else
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puts ("second feenableexcept failed, cannot test");
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return result;
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}
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ret = fesetmode (&saved);
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if (ret != 0)
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{
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puts ("fesetmode failed");
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result = 1;
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return result;
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}
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/* Verify that the set of enabled traps was restored. */
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ret = fegetexcept ();
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if (ret != exc1)
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{
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printf ("restored enabled traps %x not %x\n", (unsigned int) ret,
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(unsigned int) exc1);
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result = 1;
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}
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/* Likewise, with default modes. */
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ret = fesetmode (FE_DFL_MODE);
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if (ret != 0)
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{
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puts ("fesetmode (FE_DFL_MODE) failed");
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result = 1;
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return result;
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}
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ret = fegetexcept ();
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if (ret != 0)
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{
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printf ("FE_DFL_MODE enabled traps %x not 0\n", (unsigned int) ret);
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result = 1;
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}
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return result;
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}
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static int
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test_e (int exc1)
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{
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int result = 0;
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result |= test_ee (exc1, 0);
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result |= test_ee (exc1, FE_ALL_EXCEPT);
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#ifdef FE_DIVBYZERO
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result |= test_ee (exc1, FE_DIVBYZERO);
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#endif
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#ifdef FE_INEXACT
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result |= test_ee (exc1, FE_INEXACT);
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#endif
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#ifdef FE_INVALID
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result |= test_ee (exc1, FE_INVALID);
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#endif
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#ifdef FE_OVERFLOW
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result |= test_ee (exc1, FE_OVERFLOW);
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_ee (exc1, FE_UNDERFLOW);
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#endif
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return result;
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}
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static int
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do_test (void)
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{
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int result = 0;
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result |= test_e (0);
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result |= test_e (FE_ALL_EXCEPT);
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#ifdef FE_DIVBYZERO
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result |= test_e (FE_DIVBYZERO);
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#endif
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#ifdef FE_INEXACT
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result |= test_e (FE_INEXACT);
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#endif
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#ifdef FE_INVALID
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result |= test_e (FE_INVALID);
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#endif
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#ifdef FE_OVERFLOW
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result |= test_e (FE_OVERFLOW);
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#endif
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#ifdef FE_UNDERFLOW
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result |= test_e (FE_UNDERFLOW);
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#endif
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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