WCSNCPY(3P)                                         POSIX Programmer's Manual                                        WCSNCPY(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
       wcsncpy - copy part of a wide-character string

SYNOPSIS
       #include <wchar.h>

       wchar_t *wcsncpy(wchar_t *restrict ws1, const wchar_t *restrict ws2,
              size_t n);


DESCRIPTION
       The  wcsncpy()  function  shall  copy not more than n wide-character codes (wide-character codes that follow a null wide-
       character code are not copied) from the array pointed to by ws2 to the array pointed to by ws1. If  copying  takes  place
       between objects that overlap, the behavior is undefined.

       If  the array pointed to by ws2 is a wide-character string that is shorter than n wide-character codes, null wide-charac-
       ter codes shall be appended to the copy in the array pointed to by ws1, until n wide-character codes in all are written.

RETURN VALUE
       The wcsncpy() function shall return ws1; no return value is reserved to indicate an error.

ERRORS
       No errors are defined.

       The following sections are informative.

EXAMPLES
       None.

APPLICATION USAGE
       If there is no null wide-character code in the first n wide-character codes of the array pointed to by ws2, the result is
       not null-terminated.

RATIONALE
       None.

FUTURE DIRECTIONS
       None.

SEE ALSO
       wcscpy(), the Base Definitions volume of IEEE Std 1003.1-2001, <wchar.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                                                   WCSNCPY(3P)