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+.\" Copyright (c) 1990, 1991, 1993
+.\"	The Regents of the University of California.  All rights reserved.
+.\"
+.\" This code is derived from software contributed to Berkeley by
+.\" Chris Torek.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\"    may be used to endorse or promote products derived from this software
+.\"    without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"     from: @(#)bcopy.3	8.1 (Berkeley) 6/4/93
+.\"	$NetBSD: bcopy.9,v 1.9 2003/08/07 10:31:30 agc Exp $
+.\"
+.Dd July 7, 2001
+.Dt BCOPY 9
+.Os
+.Sh NAME
+.Nm bcopy
+.Nd copy byte string
+.Sh SYNOPSIS
+.In sys/systm.h
+.Ft void
+.Fn bcopy "const void *src" "void *dst" "size_t len"
+.Sh DESCRIPTION
+.Bf -symbolic
+The
+.Fn bcopy
+interface is obsolete.
+Do not add new code using it.
+It will soon be purged.
+Use
+.Xr memcpy 9
+instead.
+(The
+.Fn bcopy
+function is now a macro for
+.Xr memcpy 9 . )
+.Ef
+.Pp
+The
+.Fn bcopy
+function
+copies
+.Fa len
+bytes from string
+.Fa src
+to string
+.Fa dst .
+.Pp
+.Bf -symbolic
+Unlike
+.Xr bcopy 3
+the two strings must not overlap!
+.Ef
+In the traditional
+.Bx
+kernel, overlapping copies were handled by the now-purged
+.Fn ovbcopy
+function.
+If you need to copy overlapping data, see
+.Xr memmove 9 .
+.Pp
+If
+.Fa len
+is zero, no bytes are copied.
+.Sh SEE ALSO
+.Xr bcopy 3 ,
+.Xr memcpy 9 ,
+.Xr memmove 9