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/* Test fesetenv (FE_DFL_ENV) and fesetenv (FE_NOMASK_ENV) clear
exceptions (bug 19181).
Copyright (C) 2015-2021 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 <float.h>
#include <stdio.h>
volatile float fa = 1.0f, fb = 0.0f, fc = FLT_MAX, fr;
volatile long double lda = 1.0L, ldb = 0.0L, ldc = LDBL_MAX, ldr;
static void
raise_exceptions (void)
{
/* Raise exceptions both with feraiseexcept and arithmetic to allow
for case of multiple floating-point units with separate
exceptions state. */
feraiseexcept (FE_ALL_EXCEPT);
fr = fb / fb;
fr = fa / fb;
fr = fc * fc;
fr = fa / fc / fc;
ldr = ldb / ldb;
ldr = lda / ldb;
ldr = ldc * ldc;
ldr = lda / ldc / ldc;
}
static __attribute__ ((noinline)) int
run_tests (void)
{
int result = 0;
raise_exceptions ();
if (fesetenv (FE_DFL_ENV) == 0)
{
puts ("PASS: fesetenv (FE_DFL_ENV)");
if (fetestexcept (FE_ALL_EXCEPT) == 0)
puts ("PASS: fesetenv (FE_DFL_ENV) clearing exceptions");
else
{
puts ("FAIL: fesetenv (FE_DFL_ENV) clearing exceptions");
result = 1;
}
}
else
{
puts ("FAIL: fesetenv (FE_DFL_ENV)");
result = 1;
}
#ifdef FE_NOMASK_ENV
raise_exceptions ();
if (fesetenv (FE_NOMASK_ENV) == 0)
{
if (fetestexcept (FE_ALL_EXCEPT) == 0)
puts ("PASS: fesetenv (FE_NOMASK_ENV) clearing exceptions");
else
{
puts ("FAIL: fesetenv (FE_NOMASK_ENV) clearing exceptions");
result = 1;
}
}
else
puts ("fesetenv (FE_NOMASK_ENV) failed, cannot test");
#endif
return result;
}
static int
do_test (void)
{
CHECK_CAN_TEST;
return run_tests ();
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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