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1.\" Copyright (c) 1990, 1991, 1993
2.\" The Regents of the University of California. All rights reserved.
3.\"
4.\" This code is derived from software contributed to Berkeley by
5.\" Chris Torek.
6.\"
7.\" Redistribution and use in source and binary forms, with or without
8.\" modification, are permitted provided that the following conditions
9.\" are met:
10.\" 1. Redistributions of source code must retain the above copyright
11.\" notice, this list of conditions and the following disclaimer.
12.\" 2. Redistributions in binary form must reproduce the above copyright
13.\" notice, this list of conditions and the following disclaimer in the
14.\" documentation and/or other materials provided with the distribution.
15.\" 3. All advertising materials mentioning features or use of this software
16.\" must display the following acknowledgement:
17.\" This product includes software developed by the University of
18.\" California, Berkeley and its contributors.
19.\" 4. Neither the name of the University nor the names of its contributors
20.\" may be used to endorse or promote products derived from this software
21.\" without specific prior written permission.
22.\"
23.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33.\" SUCH DAMAGE.
34.\"
35.\" @(#)bcopy.3 8.1 (Berkeley) 6/4/93
36.\" $FreeBSD: src/lib/libc/string/bcopy.3,v 1.8 2002/09/01 21:53:46 robert Exp $
37.\"
38.Dd June 4, 1993
39.Dt BCOPY 3
40.Os
41.Sh NAME
42.Nm bcopy
43.Nd copy byte string
44.Sh LIBRARY
45.Lb libc
46.Sh SYNOPSIS
47.In strings.h
48.Ft void
49.Fn bcopy "const void *src" "void *dst" "size_t len"
50.Sh DESCRIPTION
51The
52.Fn bcopy
53function
54copies
55.Fa len
56bytes from string
57.Fa src
58to string
59.Fa dst .
60The two strings may overlap.
61If
62.Fa len
63is zero, no bytes are copied.
64.Sh SEE ALSO
65.Xr memccpy 3 ,
66.Xr memcpy 3 ,
67.Xr memmove 3 ,
68.Xr strcpy 3 ,
69.Xr strncpy 3
70.Sh HISTORY
71A
72.Fn bcopy
73function appeared in
74.Bx 4.2 .
75Its prototype existed previously in
76.Aq Pa string.h
77before it was moved to
78.Aq Pa strings.h
79for
80.St -p1003.1-2001
81compliance.