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.\" 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 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.\" @(#)bcopy.3 8.1 (Berkeley) 6/4/93 32.\" $FreeBSD: src/lib/libc/string/bcopy.3,v 1.10 2007/01/09 00:28:11 imp Exp $ 33.\" $DragonFly: src/lib/libc/string/bcopy.3,v 1.2 2003/06/17 04:26:46 dillon Exp $ 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 44.In strings.h 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 . 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. 79