.\" Copyright (c) 1990 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 are permitted provided
.\" that: (1) source distributions retain this entire copyright notice and
.\" comment, and (2) distributions including binaries display the following
.\" acknowledgement:  ``This product includes software developed by the
.\" University of California, Berkeley and its contributors'' in the
.\" documentation or other materials provided with the distribution and in
.\" all advertising materials mentioning features or use of this software.
.\" 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 ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
.\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
.\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
.\"
.\"	@(#)memcpy.3	5.2 (Berkeley) 6/24/90
.\"
.TH MEMCPY 3 "June 24, 1990"
.UC 7
.SH NAME
memcpy \- copy byte string
.SH SYNOPSIS
.nf
.ft B
#include <string.h>

void *
memcpy(void *dst, const void *src, size_t len);
.ft R
.fi
.SH DESCRIPTION
.B Memcpy
copies
.I len
bytes from string
.I src
to string
.I dst
and returns the original value of
.IR dst .
.SH SEE ALSO
bcopy(3), memccpy(3), memmove(3), strcpy(3)
.SH STANDARDS
.IR Memcpy
conforms to ANSI X3.159-1989 (``ANSI C'').
.SH BUGS
In this implementation
.B memcpy
is implemented using
.IR bcopy (3),
and therefore the strings may overlap.
On other systems, copying overlapping strings may produce surprises.
A simpler solution is to not use
.IR memcpy .