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5.\" Chris Torek.
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30.\"     from: @(#)bcmp.3	8.1 (Berkeley) 6/4/93
31.\"	$NetBSD: bcmp.3,v 1.14 2012/05/05 21:24:19 dholland Exp $
32.\"
33.Dd May 5, 2012
34.Dt BCMP 3
35.Os
36.Sh NAME
37.Nm bcmp
38.Nd compare byte string
39.Sh LIBRARY
40.Lb libc
41.Sh SYNOPSIS
42.In strings.h
43.Ft int
44.Fn bcmp "const void *b1" "const void *b2" "size_t len"
45.Sh DESCRIPTION
46The
47.Fn bcmp
48function
49compares byte string
50.Fa b1
51against byte string
52.Fa b2 ,
53returning zero if they are identical, non-zero otherwise.
54Both strings are assumed to be
55.Fa len
56bytes long.
57Zero-length strings are always identical.
58.Pp
59The strings may overlap.
60.Pp
61This function is obsolete.
62The equivalent function
63.Xr memcmp 3
64should be used instead.
65.Sh SEE ALSO
66.Xr memcmp 3 ,
67.Xr strcasecmp 3 ,
68.Xr strcmp 3 ,
69.Xr strcoll 3 ,
70.Xr strxfrm 3
71.Sh STANDARDS
72The
73.Fn bcmp
74function conforms to
75.St -p1003.1-2001 .
76The
77.St -p1003.1-2004
78revision marked it as legacy and recommended the use of
79.Xr memcmp 3
80instead.
81The
82.St -p1003.1-2008
83revision removed
84.Fn bcmp
85from the specification.
86.Sh HISTORY
87A
88.Fn bcmp
89function first appeared in
90.Bx 4.2 .
91