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.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 4. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" @(#)bstring.3 8.1 (Berkeley) 6/4/93 31.\" $FreeBSD: src/lib/libc/string/bstring.3,v 1.8 2007/01/09 00:28:11 imp Exp $ 32.\" $DragonFly: src/lib/libc/string/bstring.3,v 1.2 2003/06/17 04:26:46 dillon Exp $ 33.\" 34.Dd June 4, 1993 35.Dt BSTRING 3 36.Os 37.Sh NAME 38.Nm bcmp , 39.Nm bcopy , 40.Nm bzero , 41.Nm memccpy , 42.Nm memchr , 43.Nm memcmp , 44.Nm memcpy , 45.Nm memmove , 46.Nm memset 47.Nd byte string operations 48.Sh LIBRARY 49.Lb libc 50.Sh SYNOPSIS 51.In string.h 52.Ft int 53.Fn bcmp "const void *b1" "const void *b2" "size_t len" 54.Ft void 55.Fn bcopy "const void *src" "void *dst" "size_t len" 56.Ft void 57.Fn bzero "void *b" "size_t len" 58.Ft void * 59.Fn memchr "const void *b" "int c" "size_t len" 60.Ft int 61.Fn memcmp "const void *b1" "const void *b2" "size_t len" 62.Ft void * 63.Fn memccpy "void *dst" "const void *src" "int c" "size_t len" 64.Ft void * 65.Fn memcpy "void *dst" "const void *src" "size_t len" 66.Ft void * 67.Fn memmove "void *dst" "const void *src" "size_t len" 68.Ft void * 69.Fn memset "void *b" "int c" "size_t len" 70.Sh DESCRIPTION 71These functions operate on variable length strings of bytes. 72They do not check for terminating null bytes as the routines 73listed in 74.Xr string 3 75do. 76.Pp 77See the specific manual pages for more information. 78.Sh SEE ALSO 79.Xr bcmp 3 , 80.Xr bcopy 3 , 81.Xr bzero 3 , 82.Xr memccpy 3 , 83.Xr memchr 3 , 84.Xr memcmp 3 , 85.Xr memcpy 3 , 86.Xr memmove 3 , 87.Xr memset 3 88.Sh STANDARDS 89The functions 90.Fn memchr , 91.Fn memcmp , 92.Fn memcpy , 93.Fn memmove , 94and 95.Fn memset 96conform to 97.St -isoC . 98.Sh HISTORY 99The functions 100.Fn bzero 101and 102.Fn memccpy 103appeared in 104.Bx 4.3 ; 105the functions 106.Fn bcmp , 107.Fn bcopy , 108appeared in 109.Bx 4.2 . 110