forked from KolibriOS/kolibrios
30 lines
713 B
C
30 lines
713 B
C
|
/* Copyright (C) 2002,2007 by Red Hat, Incorporated. All rights reserved.
|
||
|
|
*
|
||
|
|
* Permission to use, copy, modify, and distribute this software
|
||
|
|
* is freely granted, provided that this notice is preserved.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "fdlibm.h"
|
||
|
|
|
||
|
|
int
|
||
|
|
__fpclassifyf (float x)
|
||
|
|
{
|
||
|
|
__uint32_t w;
|
||
|
|
|
||
|
|
GET_FLOAT_WORD(w,x);
|
||
|
|
|
||
|
|
if (w == 0x00000000 || w == 0x80000000)
|
||
|
|
return FP_ZERO;
|
||
|
|
else if ((w >= 0x00800000 && w <= 0x7f7fffff) ||
|
||
|
|
(w >= 0x80800000 && w <= 0xff7fffff))
|
||
|
|
return FP_NORMAL;
|
||
|
|
else if ((w >= 0x00000001 && w <= 0x007fffff) ||
|
||
|
|
(w >= 0x80000001 && w <= 0x807fffff))
|
||
|
|
return FP_SUBNORMAL;
|
||
|
|
else if (w == 0x7f800000 || w == 0xff800000)
|
||
|
|
return FP_INFINITE;
|
||
|
|
else
|
||
|
|
return FP_NAN;
|
||
|
|
}
|
||
|
|
|