1.\" Copyright (c) 1990, 1991 The Regents of the University of California. 2.\" 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. 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 25.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 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.\" $OpenBSD: bcopy.3,v 1.10 2011/07/25 00:38:52 schwarze Exp $ 32.\" 33.Dd $Mdocdate: July 25 2011 $ 34.Dt BCOPY 3 35.Os 36.Sh NAME 37.Nm bcopy 38.Nd copy bytes 39.Sh SYNOPSIS 40.Fd #include <string.h> 41.Ft void 42.Fn bcopy "const void *src" "void *dst" "size_t len" 43.Sh DESCRIPTION 44The 45.Fn bcopy 46function copies 47.Fa len 48bytes from buffer 49.Fa src 50to buffer 51.Fa dst . 52The two buffers may overlap. 53If 54.Fa len 55is zero, no bytes are copied. 56.Sh SEE ALSO 57.Xr memccpy 3 , 58.Xr memcpy 3 , 59.Xr memmove 3 , 60.Xr strcpy 3 , 61.Xr strlcpy 3 , 62.Xr strncpy 3 63.Sh HISTORY 64The 65.Fn bcopy 66function first appeared in 67.Bx 4.2 . 68