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/* Test of rounding to nearest, breaking ties away from zero.
Copyright (C) 2010-2023 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, 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/>. */
#include <config.h>
#include <math.h>
#include "isnand-nolibm.h"
#include "minus-zero.h"
#include "infinity.h"
#include "nan.h"
#include "macros.h"
int
main ()
{
/* See IEEE 754, section 6.3:
"the sign of the result of the round floating-point number to
integral value operation is the sign of the operand. These rules
shall apply even when operands or results are zero or infinite." */
/* Zero. */
ASSERT (!signbit (round (0.0)));
ASSERT (!!signbit (round (minus_zerod)) == !!signbit (minus_zerod));
/* Positive numbers. */
ASSERT (!signbit (round (0.3)));
ASSERT (!signbit (round (0.7)));
/* Negative numbers. */
ASSERT (!!signbit (round (-0.3)) == !!signbit (minus_zerod));
ASSERT (!!signbit (round (-0.7)) == !!signbit (minus_zerod));
/* [MX] shaded specification in POSIX. */
/* NaN. */
ASSERT (isnand (round (NaNd ())));
/* Infinity. */
ASSERT (round (Infinityd ()) == Infinityd ());
ASSERT (round (- Infinityd ()) == - Infinityd ());
return 0;
}
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