1/* @(#)s_ldexp0.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_ldexp.c,v 1.10 2008/04/25 22:21:53 christos Exp $");
16#endif
17
18#include "namespace.h"
19#include "math.h"
20#include "math_private.h"
21#include <errno.h>
22
23double
24ldexp(double value, int exp0)
25{
26	if(!finite(value)||value==0.0) return value;
27	value = scalbn(value,exp0);
28	if(!finite(value)||value==0.0) errno = ERANGE;
29	return value;
30}
31