/* Test of rounding towards negative infinity.
- 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
#include <math.h>
#include "fpucw.h"
+#include "isnanl-nolibm.h"
#include "minus-zero.h"
+#include "infinity.h"
+#include "nan.h"
#include "macros.h"
int
BEGIN_LONG_DOUBLE_ROUNDING ();
+ /* 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 (floorl (0.0L)));
ASSERT (!!signbit (floorl (minus_zerol)) == !!signbit (minus_zerol));
+ /* Positive numbers. */
+ ASSERT (!signbit (floorl (0.3L)));
+ ASSERT (!signbit (floorl (0.7L)));
+ /* Negative numbers. */
+ ASSERT (!!signbit (floorl (-0.3L)) == !!signbit (minus_zerol));
+ ASSERT (!!signbit (floorl (-0.7L)) == !!signbit (minus_zerol));
+
+ /* [MX] shaded specification in POSIX. */
+
+ /* NaN. */
+ ASSERT (isnanl (floorl (NaNl ())));
+ /* Infinity. */
+ ASSERT (floorl (Infinityl ()) == Infinityl ());
+ ASSERT (floorl (- Infinityl ()) == - Infinityl ());
return 0;
}