1*d3d281f4Smiod /* $OpenBSD: memcpy.c,v 1.1 2013/01/20 23:01:44 miod Exp $ */
2*d3d281f4Smiod /* $NetBSD: bcopy.c,v 1.5 1995/04/22 13:46:50 cgd Exp $ */
3*d3d281f4Smiod
4*d3d281f4Smiod /*-
5*d3d281f4Smiod * Copyright (c) 1993
6*d3d281f4Smiod * The Regents of the University of California. All rights reserved.
7*d3d281f4Smiod *
8*d3d281f4Smiod * Redistribution and use in source and binary forms, with or without
9*d3d281f4Smiod * modification, are permitted provided that the following conditions
10*d3d281f4Smiod * are met:
11*d3d281f4Smiod * 1. Redistributions of source code must retain the above copyright
12*d3d281f4Smiod * notice, this list of conditions and the following disclaimer.
13*d3d281f4Smiod * 2. Redistributions in binary form must reproduce the above copyright
14*d3d281f4Smiod * notice, this list of conditions and the following disclaimer in the
15*d3d281f4Smiod * documentation and/or other materials provided with the distribution.
16*d3d281f4Smiod * 3. Neither the name of the University nor the names of its contributors
17*d3d281f4Smiod * may be used to endorse or promote products derived from this software
18*d3d281f4Smiod * without specific prior written permission.
19*d3d281f4Smiod *
20*d3d281f4Smiod * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21*d3d281f4Smiod * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22*d3d281f4Smiod * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23*d3d281f4Smiod * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24*d3d281f4Smiod * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25*d3d281f4Smiod * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26*d3d281f4Smiod * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27*d3d281f4Smiod * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28*d3d281f4Smiod * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29*d3d281f4Smiod * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30*d3d281f4Smiod * SUCH DAMAGE.
31*d3d281f4Smiod *
32*d3d281f4Smiod * @(#)bcopy.c 8.1 (Berkeley) 6/11/93
33*d3d281f4Smiod */
34*d3d281f4Smiod
35*d3d281f4Smiod #include <sys/types.h>
36*d3d281f4Smiod
37*d3d281f4Smiod /*
38*d3d281f4Smiod * This is designed to be small, not fast.
39*d3d281f4Smiod */
40*d3d281f4Smiod void *
memcpy(s1,s2,n)41*d3d281f4Smiod memcpy(s1, s2, n)
42*d3d281f4Smiod void *s1;
43*d3d281f4Smiod const void *s2;
44*d3d281f4Smiod size_t n;
45*d3d281f4Smiod {
46*d3d281f4Smiod register const char *f = s2;
47*d3d281f4Smiod register char *t = s1;
48*d3d281f4Smiod
49*d3d281f4Smiod if (f < t) {
50*d3d281f4Smiod f += n;
51*d3d281f4Smiod t += n;
52*d3d281f4Smiod while (n-- > 0)
53*d3d281f4Smiod *--t = *--f;
54*d3d281f4Smiod } else
55*d3d281f4Smiod while (n-- > 0)
56*d3d281f4Smiod *t++ = *f++;
57*d3d281f4Smiod return s1;
58*d3d281f4Smiod }
59