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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.
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15.\" 4. Neither the name of the University nor the names of its contributors
16.\" may be used to endorse or promote products derived from this software
17.\" without specific prior written permission.
18.\"
19.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
20.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
23.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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26.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29.\" SUCH DAMAGE.
30.\"
31.\" @(#)bcopy.3 8.1 (Berkeley) 6/4/93
716024cd 32.\" $FreeBSD: src/lib/libc/string/bcopy.3,v 1.10 2007/01/09 00:28:11 imp Exp $
1de703da 33.\" $DragonFly: src/lib/libc/string/bcopy.3,v 1.2 2003/06/17 04:26:46 dillon Exp $
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34.\"
35.Dd June 4, 1993
36.Dt BCOPY 3
37.Os
38.Sh NAME
39.Nm bcopy
40.Nd copy byte string
41.Sh LIBRARY
42.Lb libc
43.Sh SYNOPSIS
716024cd 44.In strings.h
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45.Ft void
46.Fn bcopy "const void *src" "void *dst" "size_t len"
47.Sh DESCRIPTION
48The
49.Fn bcopy
50function
51copies
52.Fa len
53bytes from string
54.Fa src
55to string
56.Fa dst .
57The two strings may overlap.
58If
59.Fa len
60is zero, no bytes are copied.
61.Sh SEE ALSO
62.Xr memccpy 3 ,
63.Xr memcpy 3 ,
64.Xr memmove 3 ,
65.Xr strcpy 3 ,
66.Xr strncpy 3
67.Sh HISTORY
68A
69.Fn bcopy
70function appeared in
71.Bx 4.2 .
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72Its prototype existed previously in
73.In string.h
74before it was moved to
75.In strings.h
76for
77.St -p1003.1-2001
78compliance.