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#ifndef lint 14static char rcsid[] = "$FreeBSD: src/lib/msun/src/s_finite.c,v 1.8 2003/07/23 04:53:46 peter Exp $"; 15#endif 16 17/* 18 * finite(x) returns 1 is x is finite, else 0; 19 * no branching! 20 */ 21 22#include "math.h" 23#include "math_private.h" 24 25 int finite(double x) 26{ 27 int32_t hx; 28 GET_HIGH_WORD(hx,x); 29 return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31); 30} 31