posix man page for bcopy

BCOPY(P)						     POSIX Programmer's Manual							  BCOPY(P)

NAME
       bcopy - memory operations (LEGACY)

SYNOPSIS
       #include <strings.h>

       void bcopy(const void *s1, void *s2, size_t n);

DESCRIPTION
       The bcopy() function shall copy n bytes from the area pointed to by s1 to the area pointed to by s2.

       The bytes are copied correctly even if the area pointed to by s1 overlaps the area pointed to by s2.

RETURN VALUE
       The bcopy() function shall not return a value.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

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

       The following are approximately equivalent (note the order of the arguments):

	      bcopy(s1,s2,n) ~= memmove(s2,s1,n)

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

	      #define bcopy(b1,b2,len) (memmove((b2), (b1), (len)), (void) 0)

RATIONALE
       None.

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       This function may be withdrawn in a future version.

SEE ALSO
       memmove() , 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 Technol-
       ogy -- 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								  BCOPY(P)