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Annotation of 43BSDReno/lib/libc/string/memcmp.3, revision 1.1.1.1

1.1       root        1: .\" Copyright (c) 1990 The Regents of the University of California.
                      2: .\" All rights reserved.
                      3: .\"
                      4: .\" This code is derived from software contributed to Berkeley by
                      5: .\" Chris Torek.
                      6: .\"
                      7: .\" Redistribution and use in source and binary forms are permitted provided
                      8: .\" that: (1) source distributions retain this entire copyright notice and
                      9: .\" comment, and (2) distributions including binaries display the following
                     10: .\" acknowledgement:  ``This product includes software developed by the
                     11: .\" University of California, Berkeley and its contributors'' in the
                     12: .\" documentation or other materials provided with the distribution and in
                     13: .\" all advertising materials mentioning features or use of this software.
                     14: .\" Neither the name of the University nor the names of its contributors may
                     15: .\" be used to endorse or promote products derived from this software without
                     16: .\" specific prior written permission.
                     17: .\" THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
                     18: .\" WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
                     19: .\" MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     20: .\"
                     21: .\"    @(#)memcmp.3    5.2 (Berkeley) 6/24/90
                     22: .\"
                     23: .TH MEMCMP 3 "June 24, 1990"
                     24: .UC 7
                     25: .SH NAME
                     26: memcmp \- compare byte string
                     27: .SH SYNOPSIS
                     28: .nf
                     29: .ft B
                     30: #include <string.h>
                     31: 
                     32: int
                     33: memcmp(const void *b1, const void *b2, size_t len);
                     34: .ft R
                     35: .fi
                     36: .SH DESCRIPTION
                     37: .B Memcmp
                     38: compares byte string
                     39: .I b1
                     40: against byte string
                     41: .IR b2 ,
                     42: returning zero if they are identical,
                     43: otherwise returning the difference between the first two differing bytes
                     44: (treated as unsigned char values, so that '\e200' is greater than \&'\e0',
                     45: e.g.).
                     46: Both strings are assumed to be
                     47: .I len
                     48: bytes long.
                     49: Zero-length strings are always identical.
                     50: .SH SEE ALSO
                     51: bcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3)
                     52: .SH STANDARDS
                     53: .I Memcmp
                     54: conforms to ANSI X3.159-1989 (``ANSI C'').

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