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NAME

       memcmp - compare bytes in memory

SYNOPSIS

       #include <string.h>

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

DESCRIPTION

       The memcmp() function shall compare the first n bytes (each interpreted
       as unsigned char) of the object pointed to by s1 to the first  n  bytes
       of the object pointed to by s2.

       The  sign of a non-zero return value shall be determined by the sign of
       the difference between the values of the  first  pair  of  bytes  (both
       interpreted  as  type  unsigned  char) that differ in the objects being
       compared.

RETURN VALUE

       The memcmp() function shall return an integer greater than,  equal  to,
       or  less  than 0, if the object pointed to by s1 is greater than, equal
       to, or less than the object pointed to by s2, respectively.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       The Base Definitions volume of IEEE Std 1003.1-2001, <string.h>

COPYRIGHT

       Portions of this text are reprinted and reproduced in  electronic  form
       from IEEE Std 1003.1, 2003 Edition, Standard for Information Technology
       -- Portable Operating System Interface (POSIX),  The  Open  Group  Base
       Specifications  Issue  6,  Copyright  (C) 2001-2003 by the Institute of
       Electrical and Electronics Engineers, Inc and The Open  Group.  In  the
       event of any discrepancy between this version and the original IEEE and
       The Open Group Standard, the original IEEE and The Open Group  Standard
       is  the  referee document. The original Standard can be obtained online
       at http://www.opengroup.org/unix/online.php .



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