Mercurial > gnulib
view tests/test-frexp-ieee.h @ 40160:5c7e0484c1e9
tmpfile: Add support for Android.
* m4/tmpfile.m4 (gl_FUNC_TMPFILE): Add a runtime test whether tmpfile()
works.
* lib/tmpfile.c (tmpfile): Add an alternative implementation for
Android.
* modules/tmpfile (Depends-on): Add 'stdbool'.
* doc/posix-functions/tmpfile.texi: Mention the Android bug.
* modules/argv-iter-tests (Depends-on): Add 'tmpfile'.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 27 Jan 2019 22:03:14 +0100 |
parents | b06060465f09 |
children |
line wrap: on
line source
/* Test of splitting a double into fraction and mantissa. 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. */ /* 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); } }