blob: 017b4a6ad8640ea41b0d548db3df89cd49f8b1ac (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
/* Test of modf*() function family.
Copyright (C) 2012-2022 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. */
{
DOUBLE integer_part = -9999;
DOUBLE fractional_part = MODF (NAN, &integer_part);
ASSERT (ISNAN (integer_part));
ASSERT (ISNAN (fractional_part));
}
/* Infinity. */
{
DOUBLE integer_part = -9999;
DOUBLE fractional_part = MODF (INFINITY, &integer_part);
ASSERT (integer_part == INFINITY);
ASSERT (fractional_part == L_(0.0));
ASSERT (!signbit (fractional_part));
}
{
DOUBLE integer_part = -9999;
DOUBLE fractional_part = MODF (- INFINITY, &integer_part);
ASSERT (integer_part == - INFINITY);
ASSERT (fractional_part == L_(0.0));
ASSERT (!!signbit (fractional_part) == !!signbit (MINUS_ZERO));
}
}
|
