1
2/* @(#)s_finite.c 1.3 95/01/18 */
3/*
4 * ====================================================
5 * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
6 *
7 * Developed at SunSoft, a Sun Microsystems, Inc. business.
8 * Permission to use, copy, modify, and distribute this
9 * software is freely granted, provided that this notice
10 * is preserved.
11 * ====================================================
12 */
13
14/*
15 * ieee_finite(x) returns 1 is x is finite, else 0;
16 * no branching!
17 */
18
19#include "fdlibm.h"
20
21#ifdef __STDC__
22	int ieee_finite(double x)
23#else
24	int ieee_finite(x)
25	double x;
26#endif
27{
28	int hx;
29	hx = __HI(x);
30	return  (unsigned)((hx&0x7fffffff)-0x7ff00000)>>31;
31}
32