memcmp(3p) - phpMan

MEMCMP(3P)                 POSIX Programmer's Manual                MEMCMP(3P)

PROLOG
       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
       implementation of this interface may differ (consult the  corresponding
       Linux  manual page for details of Linux behavior), or the interface may
       not be implemented on Linux.
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.html .

IEEE/The Open Group                  2003                           MEMCMP(3P)