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/* Test femode_t functions.
Copyright (C) 2016-2024 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_mmee (int mode1, int mode2, int exc1, int exc2)
{
int result = 0;
printf ("testing %x %x %x %x\n", (unsigned int) mode1, (unsigned int) mode2,
(unsigned int) exc1, (unsigned int) exc2);
feclearexcept (FE_ALL_EXCEPT);
int ret = fesetround (mode1);
if (ret != 0)
{
if (ROUNDING_TESTS (float, mode1))
{
puts ("first fesetround failed unexpectedly");
result = 1;
}
else
puts ("first fesetround failed, cannot test");
return result;
}
ret = fesetexcept (exc1);
if (ret != 0)
{
if (EXCEPTION_TESTS (float) || exc1 == 0)
{
puts ("first fesetexcept failed unexpectedly");
result = 1;
}
else
puts ("first fesetexcept failed, cannot test");
return result;
}
femode_t saved;
ret = fegetmode (&saved);
if (ret != 0)
{
puts ("fegetmode failed");
result = 1;
return result;
}
feclearexcept (FE_ALL_EXCEPT);
ret = fesetround (mode2);
if (ret != 0)
{
if (ROUNDING_TESTS (float, mode2))
{
puts ("second fesetround failed unexpectedly");
result = 1;
}
else
puts ("second fesetround failed, cannot test");
return result;
}
ret = fesetexcept (exc2);
if (ret != 0)
{
if (EXCEPTION_TESTS (float) || exc2 == 0)
{
puts ("second fesetexcept failed unexpectedly");
result = 1;
}
else
puts ("second fesetexcept failed, cannot test");
return result;
}
ret = fesetmode (&saved);
if (ret != 0)
{
puts ("fesetmode failed");
result = 1;
return result;
}
/* Verify that the rounding mode was restored but the exception
flags remain unchanged. */
ret = fegetround ();
if (ret != mode1)
{
printf ("restored rounding mode %x not %x\n", (unsigned int) ret,
(unsigned int) mode1);
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != exc2)
{
printf ("exceptions %x not %x\n", (unsigned int) ret,
(unsigned int) exc2);
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 = fegetround ();
if (ret != FE_TONEAREST)
{
printf ("FE_DFL_MODE rounding mode %x not %x\n", (unsigned int) ret,
(unsigned int) FE_TONEAREST);
result = 1;
}
ret = fetestexcept (FE_ALL_EXCEPT);
if (ret != exc2)
{
printf ("FE_DFL_MODE exceptions %x not %x\n", (unsigned int) ret,
(unsigned int) exc2);
result = 1;
}
return result;
}
static int
test_mme (int mode1, int mode2, int exc1)
{
int result = 0;
result |= test_mmee (mode1, mode2, exc1, 0);
result |= test_mmee (mode1, mode2, exc1, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_mmee (mode1, mode2, exc1, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_mmee (mode1, mode2, exc1, FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_mmee (mode1, mode2, exc1, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_mmee (mode1, mode2, exc1, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_mmee (mode1, mode2, exc1, FE_UNDERFLOW);
#endif
return result;
}
static int
test_mm (int mode1, int mode2)
{
int result = 0;
result |= test_mme (mode1, mode2, 0);
result |= test_mme (mode1, mode2, FE_ALL_EXCEPT);
#ifdef FE_DIVBYZERO
result |= test_mme (mode1, mode2, FE_DIVBYZERO);
#endif
#ifdef FE_INEXACT
result |= test_mme (mode1, mode2, FE_INEXACT);
#endif
#ifdef FE_INVALID
result |= test_mme (mode1, mode2, FE_INVALID);
#endif
#ifdef FE_OVERFLOW
result |= test_mme (mode1, mode2, FE_OVERFLOW);
#endif
#ifdef FE_UNDERFLOW
result |= test_mme (mode1, mode2, FE_UNDERFLOW);
#endif
return result;
}
static int
test_m (int mode1)
{
int result = 0;
#ifdef FE_DOWNWARD
result |= test_mm (mode1, FE_DOWNWARD);
#endif
#ifdef FE_TONEAREST
result |= test_mm (mode1, FE_TONEAREST);
#endif
#ifdef FE_TOWARDZERO
result |= test_mm (mode1, FE_TOWARDZERO);
#endif
#ifdef FE_UPWARD
result |= test_mm (mode1, FE_UPWARD);
#endif
return result;
}
static int
do_test (void)
{
int result = 0;
#ifdef FE_DOWNWARD
result |= test_m (FE_DOWNWARD);
#endif
#ifdef FE_TONEAREST
result |= test_m (FE_TONEAREST);
#endif
#ifdef FE_TOWARDZERO
result |= test_m (FE_TOWARDZERO);
#endif
#ifdef FE_UPWARD
result |= test_m (FE_UPWARD);
#endif
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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