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.\" 3. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)bstring.3 8.1 (Berkeley) 6/4/93 35.\" $FreeBSD: src/lib/libc/string/bstring.3,v 1.3.2.3 2001/12/14 18:33:59 ru Exp $ 36.\" $DragonFly: src/lib/libc/string/bstring.3,v 1.2 2003/06/17 04:26:46 dillon Exp $ 37.\" 38.Dd June 4, 1993 39.Dt BSTRING 3 40.Os 41.Sh NAME 42.Nm bcmp , 43.Nm bcopy , 44.Nm bzero , 45.Nm memccpy , 46.Nm memchr , 47.Nm memcmp , 48.Nm memcpy , 49.Nm memmove , 50.Nm memset 51.Nd byte string operations 52.Sh LIBRARY 53.Lb libc 54.Sh SYNOPSIS 55.In string.h 56.Ft int 57.Fn bcmp "const void *b1" "const void *b2" "size_t len" 58.Ft void 59.Fn bcopy "const void *src" "void *dst" "size_t len" 60.Ft void 61.Fn bzero "void *b" "size_t len" 62.Ft void * 63.Fn memchr "const void *b" "int c" "size_t len" 64.Ft int 65.Fn memcmp "const void *b1" "const void *b2" "size_t len" 66.Ft void * 67.Fn memccpy "void *dst" "const void *src" "int c" "size_t len" 68.Ft void * 69.Fn memcpy "void *dst" "const void *src" "size_t len" 70.Ft void * 71.Fn memmove "void *dst" "const void *src" "size_t len" 72.Ft void * 73.Fn memset "void *b" "int c" "size_t len" 74.Sh DESCRIPTION 75These functions operate on variable length strings of bytes. 76They do not check for terminating null bytes as the routines 77listed in 78.Xr string 3 79do. 80.Pp 81See the specific manual pages for more information. 82.Sh SEE ALSO 83.Xr bcmp 3 , 84.Xr bcopy 3 , 85.Xr bzero 3 , 86.Xr memccpy 3 , 87.Xr memchr 3 , 88.Xr memcmp 3 , 89.Xr memcpy 3 , 90.Xr memmove 3 , 91.Xr memset 3 92.Sh STANDARDS 93The functions 94.Fn memchr , 95.Fn memcmp , 96.Fn memcpy , 97.Fn memmove , 98and 99.Fn memset 100conform to 101.St -isoC . 102.Sh HISTORY 103The functions 104.Fn bzero 105and 106.Fn memccpy 107appeared in 108.Bx 4.3 ; 109the functions 110.Fn bcmp , 111.Fn bcopy , 112appeared in 113.Bx 4.2 . 114