minix/lib/libc/string/bcmp.3

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.\" Copyright (c) 1990, 1991, 1993
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.\" This code is derived from software contributed to Berkeley by
.\" Chris Torek.
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.\" from: @(#)bcmp.3 8.1 (Berkeley) 6/4/93
.\" $NetBSD: bcmp.3,v 1.14 2012/05/05 21:24:19 dholland Exp $
.\"
.Dd May 5, 2012
.Dt BCMP 3
.Os
.Sh NAME
.Nm bcmp
.Nd compare byte string
.Sh LIBRARY
.Lb libc
.Sh SYNOPSIS
.In strings.h
.Ft int
.Fn bcmp "const void *b1" "const void *b2" "size_t len"
.Sh DESCRIPTION
The
.Fn bcmp
function
compares byte string
.Fa b1
against byte string
.Fa b2 ,
returning zero if they are identical, non-zero otherwise.
Both strings are assumed to be
.Fa len
bytes long.
Zero-length strings are always identical.
.Pp
The strings may overlap.
.Pp
This function is obsolete.
The equivalent function
.Xr memcmp 3
should be used instead.
.Sh SEE ALSO
.Xr memcmp 3 ,
.Xr strcasecmp 3 ,
.Xr strcmp 3 ,
.Xr strcoll 3 ,
.Xr strxfrm 3
.Sh STANDARDS
The
.Fn bcmp
function conforms to
.St -p1003.1-2001 .
The
.St -p1003.1-2004
revision marked it as legacy and recommended the use of
.Xr memcmp 3
instead.
The
.St -p1003.1-2008
revision removed
.Fn bcmp
from the specification.
.Sh HISTORY
A
.Fn bcmp
function first appeared in
.Bx 4.2 .