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/* Test that tininess.h is correct for this architecture.
Copyright (C) 2012-2023 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>
#include <tininess.h>
volatile float a = 0x1.fffp-126;
volatile float b = 0x1.0008p-1;
volatile float c;
volatile float m = FLT_MIN;
volatile float mm;
static int
do_test (void)
{
int result = 0;
#ifdef FE_UNDERFLOW
feclearexcept (FE_ALL_EXCEPT);
mm = m * m;
if (!fetestexcept (FE_UNDERFLOW))
{
puts ("underflow exception not supported at runtime, cannot test");
return 0;
}
feclearexcept (FE_ALL_EXCEPT);
c = a * b;
if (fetestexcept (FE_UNDERFLOW))
{
if (TININESS_AFTER_ROUNDING)
{
puts ("tininess.h says after rounding, "
"but detected before rounding");
result = 1;
}
}
else
{
if (!TININESS_AFTER_ROUNDING)
{
puts ("tininess.h says before rounding, "
"but detected after rounding");
result = 1;
}
}
#else
puts ("underflow exception not supported at compile time, cannot test");
#endif
return result;
}
#define TEST_FUNCTION do_test ()
#include "../test-skeleton.c"
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