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



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

NAME
       bcmp - memory operations (LEGACY)

SYNOPSIS
       #include <strings.h>

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


DESCRIPTION
       The  bcmp()  function  shall compare the first n bytes of the area pointed to by s1 with the area pointed to by
       s2.

RETURN VALUE
       The bcmp() function shall return 0 if s1 and s2 are identical; otherwise, it shall return non-zero. Both  areas
       are assumed to be n bytes long. If the value of n is 0, bcmp() shall return 0.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       The memcmp() function is preferred over this function.

       For maximum portability, it is recommended to replace the function call to bcmp() as follows:


              #define bcmp(b1,b2,len) memcmp((b1), (b2), (size_t)(len))

RATIONALE
       None.

FUTURE DIRECTIONS
       This function may be withdrawn in a future version.

SEE ALSO
       memcmp(), the Base Definitions volume of IEEE Std 1003.1-2001, <strings.h>

COPYRIGHT
       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2003 Edition, Stan-
       dard for Information Technology -- Portable Operating System Interface (POSIX), The Open Group Base  Specifica-
       tions  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 Stan-
       dard,  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                             BCMP(3P)