bcopy

BCOPY(3P)                   POSIX Programmer's Manual                  BCOPY(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
       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       This function may be withdrawn in a future version.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 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                             BCOPY(3P)