Mercurial > gnulib
view tests/test-sqrt-ieee.h @ 40211:5f58d2ac35ea
unistr/u8-cmp: Fix undefined behaviour.
Reported by Jeffrey Walton <noloader@gmail.com>.
* lib/unistr/u8-cmp.c (u8_cmp): Don't invoke memcmp if n is zero.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 08 Mar 2019 20:38:22 +0100 |
parents | b06060465f09 |
children |
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/* Test of sqrt*() function family. Copyright (C) 2012-2019 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 the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 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, see <https://www.gnu.org/licenses/>. */ static void test_function (void) { /* [MX] shaded specification in POSIX. */ /* Negative values. */ ASSERT (ISNAN (SQRT (- L_(0.3)))); /* NaN. */ ASSERT (ISNAN (SQRT (NAN))); /* Signed zero. */ { DOUBLE y = SQRT (L_(0.0)); ASSERT (y == L_(0.0)); ASSERT (!signbit (y)); } { DOUBLE y = SQRT (MINUS_ZERO); ASSERT (y == L_(0.0)); ASSERT (!!signbit (y) == !!signbit (MINUS_ZERO)); } /* Infinity. */ ASSERT (SQRT (INFINITY) == INFINITY); ASSERT (ISNAN (SQRT (- INFINITY))); }