2008-03-30 Eric Blake <ebb9@byu.net>
+ Test signbit behavior on zeros.
+ * tests/test-signbit.c (test_signbitf): Add tests for zero.
+ (test_signbitd, test_signbitl): Likewise.
+
More strtod touchups.
* tests/test-strtod.c (main): Ignore tests for signbit on NaN, and
sign of negative underflow, for now. Use .5, not .1.
/* Test of signbit() substitute.
- Copyright (C) 2007 Free Software Foundation, Inc.
+ Copyright (C) 2007, 2008 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
ASSERT (signbit (-2.718f));
ASSERT (signbit (-2.718e30f));
ASSERT (signbit (-2.718e-30f));
+ /* Zeros. */
+ ASSERT (!signbit (0.0f));
+ if (1.0f / -zerof < 0)
+ ASSERT (signbit (-0.0f));
+ else
+ ASSERT (!signbit (-0.0f));
/* Infinite values. */
ASSERT (!signbit (1.0f / 0.0f));
ASSERT (signbit (-1.0f / 0.0f));
ASSERT (signbit (-2.718));
ASSERT (signbit (-2.718e30));
ASSERT (signbit (-2.718e-30));
+ /* Zeros. */
+ ASSERT (!signbit (0.0));
+ if (1.0 / -zerod < 0)
+ ASSERT (signbit (-0.0));
+ else
+ ASSERT (!signbit (-0.0));
/* Infinite values. */
ASSERT (!signbit (1.0 / 0.0));
ASSERT (signbit (-1.0 / 0.0));
ASSERT (signbit (-2.718L));
ASSERT (signbit (-2.718e30L));
ASSERT (signbit (-2.718e-30L));
+ /* Zeros. */
+ ASSERT (!signbit (0.0L));
+ if (1.0L / -zerol < 0)
+ ASSERT (signbit (-0.0L));
+ else
+ ASSERT (!signbit (-0.0L));
/* Infinite values. */
ASSERT (!signbit (1.0L / 0.0L));
ASSERT (signbit (-1.0L / 0.0L));