1 /* @(#)s_finite.c 5.1 93/09/24 */
2 /*
3  * ====================================================
4  * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.
5  *
6  * Developed at SunPro, a Sun Microsystems, Inc. business.
7  * Permission to use, copy, modify, and distribute this
8  * software is freely granted, provided that this notice
9  * is preserved.
10  * ====================================================
11  */
12 
13 #include <sys/cdefs.h>
14 __FBSDID("$FreeBSD$");
15 
16 /*
17  * finite(x) returns 1 is x is finite, else 0;
18  * no branching!
19  */
20 
21 #include "math.h"
22 #include "math_private.h"
23 
finite(double x)24 	int finite(double x)
25 {
26 	int32_t hx;
27 	GET_HIGH_WORD(hx,x);
28 	return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
29 }
30