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 #include <LibConfig.h>
13 #include <sys/EfiCdefs.h>
14 #if defined(LIBM_SCCS) && !defined(lint)
15 __RCSID("$NetBSD: s_ldexp.c,v 1.9 2002/05/26 22:01:56 wiz Exp $");
16 #endif
17
18 #include <errno.h>
19 #include "math.h"
20 #include "math_private.h"
21
22 double
ldexp(double value,int exp)23 ldexp(double value, int exp)
24 {
25 if(!finite(value)||value==0.0) return value;
26 value = scalbn(value,exp);
27 if(!finite(value)||value==0.0) errno = ERANGE;
28 return value;
29 }
30