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#if defined(LIBM_SCCS) && !defined(lint)
15__RCSID("$NetBSD: s_finite.c,v 1.13 2024/05/08 01:40:27 riastradh Exp $");
16#endif
17
18/*
19 * finite(x) returns 1 if x is finite, else 0;
20 * no branching!
21 */
22
23#include "namespace.h"
24#include "math.h"
25#include "math_private.h"
26
27__weak_alias(finite, _finite)
28
29int
30finite(double x)
31{
32	int32_t hx;
33	GET_HIGH_WORD(hx,x);
34	return (int)((u_int32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
35}
36