blob: 7ca9249694f4fd3012267c36e670d9633f4e4fc0 (
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
38
39
40
41
42
|
/* Return classification value corresponding to argument.
Copyright (C) 1997-2019 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997.
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 <math.h>
#include <math_private.h>
int
__fpclassifyf (float x)
{
uint32_t wx;
int retval = FP_NORMAL;
GET_FLOAT_WORD (wx, x);
wx &= 0x7fffffff;
if (wx == 0)
retval = FP_ZERO;
else if (wx < 0x800000)
retval = FP_SUBNORMAL;
else if (wx >= 0x7f800000)
retval = wx > 0x7f800000 ? FP_NAN : FP_INFINITE;
return retval;
}
libm_hidden_def (__fpclassifyf)
|