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/* Test femode_t functions: test handling of exception traps.
Copyright (C) 2016-2025 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <stdio.h>
#include <math-tests.h>
static int
test_ee (int exc1, int exc2)
{
int result = 0;
printf ("testing %x %x\n", (unsigned int) exc1, (unsigned int) exc2);
fedisableexcept (FE_ALL_EXCEPT);
int ret = feenableexcept (exc1);
if (ret == -1)
{
if (EXCEPTION_ENABLE_SUPPORTED (exc1))
{
puts ("first feenableexcept failed unexpectedly");
result = 1;
}
else
puts ("first feenableexcept failed, cannot test");
return result;
}
femode_t saved;
ret = fegetmode (&saved);
if (ret != 0)
{
puts ("fegetmode failed");
result = 1;
return result;
}
fedisableexcept (FE_ALL_EXCEPT);
ret = feenableexcept (exc2);
if (ret == -1)
{
if (EXCEPTION_ENABLE_SUPPORTED (exc2))
{
puts ("second feenableexcept failed unexpectedly");
result = 1;
}
else
puts ("second feenableexcept failed, cannot test");
return result;
}
ret = fesetmode (&saved);
if (ret != 0)
{
puts ("fesetmode failed");
result = 1;
return result;
}
/* Verify that the set of enabled traps was restored. */
ret = fegetexcept ();
if (ret != exc1)
{
printf ("restored enabled traps %x not %x\n", (unsigned int) ret,
(unsigned int) exc1);
result = 1;
}
/* Likewise, with default modes. */
ret = fesetmode (FE_DFL_MODE);
if (ret != 0)
{
puts ("fesetmode (FE_DFL_MODE) failed");
result = 1;
return result;
}
ret = fegetexcept ();
if (ret != 0)
{
printf ("FE_DFL_MODE enabled traps %x not 0\n", (unsigned int) ret);
result = 1;
}
return result;
}
static int
test_e (int exc1)
{
int result = 0;
result |= test_ee (exc1, 0);
result |= test_ee (exc1, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_ee (exc1, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_ee (exc1, FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_ee (exc1, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_ee (exc1, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_ee (exc1, FE_UNDERFLOW);
#endif
return result;
}
static int
do_test (void)
{
int result = 0;
result |= test_e (0);
result |= test_e (FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_e (FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_e (FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_e (FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_e (FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_e (FE_UNDERFLOW);
#endif
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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