/* Test of rounding towards zero.
- Copyright (C) 2010 Free Software Foundation, Inc.
+ 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
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 (truncl (0.0L)));
ASSERT (!!signbit (truncl (minus_zerol)) == !!signbit (minus_zerol));
+ /* Positive numbers. */
+ ASSERT (!signbit (truncl (0.3L)));
+ ASSERT (!signbit (truncl (0.7L)));
+ /* Negative numbers. */
+ ASSERT (!!signbit (truncl (-0.3L)) == !!signbit (minus_zerol));
+ ASSERT (!!signbit (truncl (-0.7L)) == !!signbit (minus_zerol));
return 0;
}