string/bcmp.3

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  34 .\"     @(#)bcmp.3      8.1 (Berkeley) 6/4/93
  35 .\" $FreeBSD: src/lib/libc/string/bcmp.3,v 1.10 2003/09/08 19:57:15 ru Exp $
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  37 .Dd June 4, 1993
  38 .Dt BCMP 3
  39 .Os
  40 .Sh NAME
  41 .Nm bcmp
  42 .Nd compare byte string
  43 .Sh LIBRARY
  44 .Lb libc
  45 .Sh SYNOPSIS
  46 .In strings.h
  47 .Ft int
  48 .Fn bcmp "const void *s1" "const void *s2" "size_t n"
  49 .Sh DESCRIPTION
  50 The
  51 .Fn bcmp
  52 function
  53 compares byte string
  54 .Fa s1
  55 against byte string
  56 .Fa s2 ,
  57 returning zero if they are identical, non-zero otherwise.
  58 Both strings are assumed to be
  59 .Fa n
  60 bytes long.
  61 Zero-length strings are always identical.
  62 .Pp
  63 The strings may overlap.
  64 .Sh SEE ALSO
  65 .Xr memcmp 3 ,
  66 .Xr strcasecmp 3 ,
  67 .Xr strcmp 3 ,
  68 .Xr strcoll 3 ,
  69 .Xr strxfrm 3
  70 .Sh HISTORY
  71 A
  72 .Fn bcmp
  73 function first appeared in
  74 .Bx 4.2 .
  75 Its prototype existed previously in
  76 .In string.h
  77 before it was moved to
  78 .In strings.h
  79 for
  80 .St -p1003.1-2001
  81 compliance.