This document is a Mac OS X manual page. Manual pages are a command-line technology for providing documentation. You can view these manual pages locally using the man(1) command. These manual pages come from many different sources, and thus, have a variety of writing styles.

For more information about the manual page format, see the manual page for manpages(5).

MEMCMP(3)                BSD Library Functions Manual                MEMCMP(3)

NAME
     memcmp -- compare byte string

LIBRARY
     Standard C Library (libc, -lc)

SYNOPSIS
     #include <string.h>

     int
     memcmp(const void *s1, const void *s2, size_t n);

DESCRIPTION
     The memcmp() function compares byte string s1 against byte string s2.  Both strings are assumed to be n
     bytes long.

RETURN VALUES
     The memcmp() function returns zero if the two strings are identical, otherwise returns the difference
     between the first two differing bytes (treated as unsigned char values, so that `\200' is greater than
     `\0', for example).  Zero-length strings are always identical.

SEE ALSO
     bcmp(3), strcasecmp(3), strcmp(3), strcoll(3), strxfrm(3)

STANDARDS
     The memcmp() function conforms to ISO/IEC 9899:1990 (``ISO C90'').

BSD                              June 4, 1993                              BSD