1/* @(#)s_ldexp.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#if defined(LIBM_SCCS) && !defined(lint)
14static char rcsid[] = "$NetBSD: s_ldexp.c,v 1.6 1995/05/10 20:47:40 jtc Exp $";
15#endif
16
17#include <math.h>
18#include <math_private.h>
19#include <errno.h>
20
21double __ldexp(double value, int exp)
22{
23 if(!isfinite(value)||value==0.0) return value + value;
24 value = __scalbn(value,exp);
25 if(!isfinite(value)||value==0.0) __set_errno (ERANGE);
26 return value;
27}
28weak_alias (__ldexp, ldexp)
29weak_alias (__ldexp, scalbn)
30#ifdef NO_LONG_DOUBLE
31strong_alias (__ldexp, __ldexpl)
32weak_alias (__ldexp, ldexpl)
33weak_alias (__ldexp, scalbnl)
34#endif
35