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. 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.\" $FreeBSD$ 32.\" 33.Dd June 4, 1993 34.Dt BSTRING 3 35.Os 36.Sh NAME 37.Nm bcmp , 38.Nm bcopy , 39.Nm bzero , 40.Nm memccpy , 41.Nm memchr , 42.Nm memcmp , 43.Nm memcpy , 44.Nm memmove , 45.Nm memset 46.Nd byte string operations 47.Sh LIBRARY 48.Lb libc 49.Sh SYNOPSIS 50.In string.h 51.Ft int 52.Fn bcmp "const void *b1" "const void *b2" "size_t len" 53.Ft void 54.Fn bcopy "const void *src" "void *dst" "size_t len" 55.Ft void 56.Fn bzero "void *b" "size_t len" 57.Ft void * 58.Fn memchr "const void *b" "int c" "size_t len" 59.Ft int 60.Fn memcmp "const void *b1" "const void *b2" "size_t len" 61.Ft void * 62.Fn memccpy "void *dst" "const void *src" "int c" "size_t len" 63.Ft void * 64.Fn memcpy "void *dst" "const void *src" "size_t len" 65.Ft void * 66.Fn memmove "void *dst" "const void *src" "size_t len" 67.Ft void * 68.Fn memset "void *b" "int c" "size_t len" 69.Sh DESCRIPTION 70These functions operate on variable length strings of bytes. 71They do not check for terminating null bytes as the routines 72listed in 73.Xr string 3 74do. 75.Pp 76See the specific manual pages for more information. 77.Sh SEE ALSO 78.Xr bcmp 3 , 79.Xr bcopy 3 , 80.Xr bzero 3 , 81.Xr memccpy 3 , 82.Xr memchr 3 , 83.Xr memcmp 3 , 84.Xr memcpy 3 , 85.Xr memmove 3 , 86.Xr memset 3 87.Sh STANDARDS 88The functions 89.Fn memchr , 90.Fn memcmp , 91.Fn memcpy , 92.Fn memmove , 93and 94.Fn memset 95conform to 96.St -isoC . 97.Sh HISTORY 98The functions 99.Fn bzero 100and 101.Fn memccpy 102appeared in 103.Bx 4.3 ; 104the functions 105.Fn bcmp , 106.Fn bcopy , 107appeared in 108.Bx 4.2 . 109