/* Test of rounding to nearest, breaking ties away from zero.
- Copyright (C) 2010 Free Software Foundation, Inc.
+ Copyright (C) 2010-2013 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
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, write to the Free Software Foundation,
- Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
+ along with this program; if not, see <http://www.gnu.org/licenses/>. */
#include <config.h>
#include <math.h>
+#include "isnanf-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 (roundf (0.0f)));
ASSERT (!!signbit (roundf (minus_zerof)) == !!signbit (minus_zerof));
+ /* Positive numbers. */
+ ASSERT (!signbit (roundf (0.3f)));
+ ASSERT (!signbit (roundf (0.7f)));
+ /* Negative numbers. */
+ ASSERT (!!signbit (roundf (-0.3f)) == !!signbit (minus_zerof));
+ ASSERT (!!signbit (roundf (-0.7f)) == !!signbit (minus_zerof));
+
+ /* [MX] shaded specification in POSIX. */
+
+ /* NaN. */
+ ASSERT (isnanf (roundf (NaNf ())));
+ /* Infinity. */
+ ASSERT (roundf (Infinityf ()) == Infinityf ());
+ ASSERT (roundf (- Infinityf ()) == - Infinityf ());
return 0;
}