xref: /titanic_51/usr/src/lib/libmail/common/strmove.c (revision 7c478bd95313f5f23a4c958a745db2134aa03244)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License, Version 1.0 only
6  * (the "License").  You may not use this file except in compliance
7  * with the License.
8  *
9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
10  * or http://www.opensolaris.org/os/licensing.
11  * See the License for the specific language governing permissions
12  * and limitations under the License.
13  *
14  * When distributing Covered Code, include this CDDL HEADER in each
15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
16  * If applicable, add the following below this CDDL HEADER, with the
17  * fields enclosed by brackets "[]" replaced with your own identifying
18  * information: Portions Copyright [yyyy] [name of copyright owner]
19  *
20  * CDDL HEADER END
21  */
22 /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
23 /*	  All Rights Reserved  	*/
24 
25 
26 /*
27  * Copyright (c) 1999, by Sun Microsystems, Inc.
28  * All rights reserved.
29  */
30 
31 #pragma ident	"%Z%%M%	%I%	%E% SMI"
32 /*LINTLIBRARY*/
33 
34 #include "synonyms.h"
35 #include <sys/types.h>
36 #include "libmail.h"
37 
38 /*
39  *  NAME
40  *	strmove - copy a string, permitting overlaps
41  *
42  *  SYNOPSIS
43  *	void strmove(char *to, char *from)
44  *
45  *  DESCRIPTION
46  *	strmove() acts exactly like strcpy() with the additional
47  *	guarantee that it will work with overlapping strings.
48  *	It does it left-to-right, a byte at a time.
49  */
50 
51 void
52 strmove(char *to, char *from)
53 {
54 	while ((*to++ = *from++) != 0)
55 		;
56 }
57