blob: 82928c6a9959125f0542289ea1eb5831b7083f33 (
plain) (
blame)
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
|
/* Return nonzero value if number is negative.
Copyright (C) 2017-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#include <float128_private.h>
#include <math.h>
#include <math_private.h>
/* Once GCC >= 6.0 is required for building glibc, this implementation can
be removed and replaced with an inclusion of ldbl-128/s_signbitl.c. */
int
__signbitf128 (_Float128 x)
{
#if __GNUC_PREREQ (6, 0)
return __builtin_signbit (x);
#else
int64_t e;
GET_FLOAT128_MSW64 (e, x);
return e < 0;
#endif
}
hidden_def (__signbitf128)
|
