Mercurial > gnulib
view tests/test-frexp-ieee.h @ 36940:c741bc27922a
maint: update all copyright year number ranges
Run "make update-copyright". Compare to commit 1602f0a from last year.
Signed-off-by: Eric Blake <eblake@redhat.com>
author | Eric Blake <eblake@redhat.com> |
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date | Tue, 01 Jan 2013 00:50:58 +0000 |
parents | cf56b1d1c1a4 |
children | 344018b6e5d7 |
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/* Test of splitting a double into fraction and mantissa. Copyright (C) 2012-2013 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 <http://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); } }