|
/* @(#)s_finite.c 1.3 95/01/18 */
|
/*
|
* ====================================================
|
* Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
|
*
|
* Developed at SunSoft, a Sun Microsystems, Inc. business.
|
* Permission to use, copy, modify, and distribute this
|
* software is freely granted, provided that this notice
|
* is preserved.
|
* ====================================================
|
*/
|
|
/*
|
* ieee_finite(x) returns 1 is x is finite, else 0;
|
* no branching!
|
*/
|
|
#include "fdlibm.h"
|
|
#ifdef __STDC__
|
int ieee_finite(double x)
|
#else
|
int ieee_finite(x)
|
double x;
|
#endif
|
{
|
int hx;
|
hx = __HI(x);
|
return (unsigned)((hx&0x7fffffff)-0x7ff00000)>>31;
|
}
|
