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 differ (con-
       sult 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       This function may be withdrawn in a future version.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,  Standard  for
       Information  Technology -- Portable Operating System Interface (POSIX), The Open Group Base Specifications Issue 6, Copy-
       right (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.open-
       group.org/unix/online.html .



IEEE/The Open Group                                           2003                                                      BCMP(3P)