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/* Test of rounding towards negative infinity.
Copyright (C) 2010-2011 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 <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <math.h>
#include "minus-zero.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 (floor (0.0)));
ASSERT (!!signbit (floor (minus_zerod)) == !!signbit (minus_zerod));
/* Positive numbers. */
ASSERT (!signbit (floor (0.3)));
ASSERT (!signbit (floor (0.7)));
/* Negative numbers. */
ASSERT (!!signbit (floor (-0.3)) == !!signbit (minus_zerod));
ASSERT (!!signbit (floor (-0.7)) == !!signbit (minus_zerod));
return 0;
}
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