42 lines
1.2 KiB
C
42 lines
1.2 KiB
C
|
/* Return classification value corresponding to argument.
|
||
|
|
Copyright (C) 1997-2022 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 <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)
|