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/* Test of rint*() function family.
Copyright (C) 2012-2019 Free Software Foundation, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>. */
static void
test_function (void)
{
/* Infinite numbers. */
ASSERT (RINT (INFINITY) == INFINITY);
ASSERT (RINT (- INFINITY) == - INFINITY);
/* NaNs. */
ASSERT (ISNAN (RINT (NAN)));
/* Randomized tests. */
{
int i;
for (i = 0; i < SIZEOF (RANDOM); i++)
{
DOUBLE x;
x = L_(0.5) * RANDOM[i];
ASSERT (RINT (x) == L_(0.0));
x = - x;
ASSERT (RINT (x) == L_(0.0));
x = L_(1.0) - L_(0.5) * RANDOM[i];
ASSERT (RINT (x) == L_(1.0));
x = - x;
ASSERT (RINT (x) == - L_(1.0));
x = L_(1.0) + L_(0.5) * RANDOM[i];
ASSERT (RINT (x) == L_(1.0));
x = - x;
ASSERT (RINT (x) == - L_(1.0));
x = L_(2.0) - L_(0.5) * RANDOM[i];
ASSERT (RINT (x) == L_(2.0));
x = - x;
ASSERT (RINT (x) == - L_(2.0));
}
}
}
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