ref: a39ae178fcc4387fe63efea4d15b34d52f4a13de
dir: /libmath/fdlibm/s_finite.c/
/* derived from /netlib/fdlibm */
/* @(#)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.
* ====================================================
*/
/*
* finite(x) returns 1 is x is finite, else 0;
* no branching!
*/
#include "fdlibm.h"
int finite(double x)
{
int hx;
hx = __HI(x);
return (unsigned)((hx&0x7fffffff)-0x7ff00000)>>31;
}