1 /* Test of copysign() function.
2 Copyright (C) 2010-2020 Free Software Foundation, Inc.
4 This program is free software: you can redistribute it and/or modify
5 it under the terms of the GNU General Public License as published by
6 the Free Software Foundation; either version 3 of the License, or
7 (at your option) any later version.
9 This program is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 GNU General Public License for more details.
14 You should have received a copy of the GNU General Public License
15 along with this program. If not, see <https://www.gnu.org/licenses/>. */
17 /* Written by Bruno Haible <bruno@clisp.org>, 2010. */
23 #include "signature.h"
24 SIGNATURE_CHECK (copysign
, double, (double, double));
27 #include "minus-zero.h"
39 /* A particular value in the first quadrant. */
45 /* A particular value in the second quadrant. */
51 /* A particular value in the third quadrant. */
57 /* A particular value in the fourth quadrant. */
63 /* From signed zero. */
72 /* Assume all gnulib targets support -0.0, until proven otherwise. */
90 ASSERT (memcmp (&z
, &zero
, sizeof z
) == 0);
96 ASSERT (memcmp (&z
, &zero
, sizeof z
) != 0);
102 ASSERT (memcmp (&z
, &zero
, sizeof z
) == 0);
108 ASSERT (memcmp (&z
, &zero
, sizeof z
) != 0);