mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-30 19:53:46 +00:00
24 lines
394 B
C
24 lines
394 B
C
|
/*
|
||
|
|
* __isinfd(x) returns 1 if x is infinity, else 0;
|
||
|
|
* no branching!
|
||
|
|
* Added by Cygnus Support.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "fdlibm.h"
|
||
|
|
|
||
|
|
#ifndef _DOUBLE_IS_32BITS
|
||
|
|
|
||
|
|
int
|
||
|
|
_DEFUN (__isinfd, (x),
|
||
|
|
double x)
|
||
|
|
{
|
||
|
|
__int32_t hx,lx;
|
||
|
|
EXTRACT_WORDS(hx,lx,x);
|
||
|
|
hx &= 0x7fffffff;
|
||
|
|
hx |= (__uint32_t)(lx|(-lx))>>31;
|
||
|
|
hx = 0x7ff00000 - hx;
|
||
|
|
return 1 - (int)((__uint32_t)(hx|(-hx))>>31);
|
||
|
|
}
|
||
|
|
|
||
|
|
#endif /* _DOUBLE_IS_32BITS */
|