Mercurial > gnulib
view tests/test-frexp-ieee.h @ 39186:c1c789fe74ad
spawn-pipe: Silence a clang warning.
Reported by Tim Rühsen <tim.ruehsen@gmx.de>.
* lib/spawn-pipe.c: Disable clang -Wconditional-uninitialized warnings
in this file.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Fri, 15 Dec 2017 10:44:15 +0100 |
parents | a8586d5e30d2 |
children | 10eb9086bea0 |
line wrap: on
line source
/* Test of splitting a double into fraction and mantissa. Copyright (C) 2012-2017 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. */ /* NaN. */ { int exp = -9999; DOUBLE mantissa; mantissa = FREXP (NAN, &exp); ASSERT (ISNAN (mantissa)); } /* Signed zero. */ { int exp = -9999; DOUBLE mantissa; mantissa = FREXP (L_(0.0), &exp); ASSERT (mantissa == L_(0.0)); ASSERT (!signbit (mantissa)); ASSERT (exp == 0); } { int exp = -9999; DOUBLE mantissa; mantissa = FREXP (MINUS_ZERO, &exp); ASSERT (mantissa == L_(0.0)); ASSERT (!!signbit (mantissa) == !!signbit (MINUS_ZERO)); ASSERT (exp == 0); } /* Infinity. */ { int exp = -9999; DOUBLE mantissa; mantissa = FREXP (INFINITY, &exp); ASSERT (mantissa == INFINITY); } { int exp = -9999; DOUBLE mantissa; mantissa = FREXP (- INFINITY, &exp); ASSERT (mantissa == - INFINITY); } }