/* Zero. */
ASSERT (ceill (0.0L) == 0.0L);
- ASSERT (!signbit (ceill (0.0L)));
ASSERT (ceill (minus_zerol) == 0.0L);
- ASSERT (!!signbit (minus_zerol) == !!signbit (ceill (minus_zerol)));
/* Positive numbers. */
ASSERT (ceill (0.3L) == 1.0L);
ASSERT (ceill (0.7L) == 1.0L);