/* @(#)s_finite.c 5.1 93/09/24 */ /* * ==================================================== * Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved. * * Developed at SunPro, a Sun Microsystems, Inc. business. * Permission to use, copy, modify, and distribute this * software is freely granted, provided that this notice * is preserved. * ==================================================== */ #if defined(LIBM_SCCS) && !defined(lint) static char rcsid[] = "$NetBSD: s_finite.c,v 1.8 1995/05/10 20:47:17 jtc Exp $"; #endif /* * finite(x) returns 1 is x is finite, else 0; * no branching! */ #include "math.h" #include "math_private.h" #ifdef __STDC__ int __finite(double x) #else int __finite(x) double x; #endif { int32_t hx; GET_HIGH_WORD(hx,x); return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31); } weak_alias(__finite,finite)
