PROLOG | NAME | SYNOPSIS | DESCRIPTION | RETURN VALUE | ERRORS | EXAMPLES | APPLICATION USAGE | RATIONALE | FUTURE DIRECTIONS | SEE ALSO | COPYRIGHT

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

PROLOG         top

       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         top

       wcpncpy, wcsncpy — copy a fixed-size wide-character string, returning
       a pointer to its end

SYNOPSIS         top

       #include <wchar.h>

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

DESCRIPTION         top

       For wcsncpy(): The functionality described on this reference page is
       aligned with the ISO C standard. Any conflict between the
       requirements described here and the ISO C standard is unintentional.
       This volume of POSIX.1‐2008 defers to the ISO C standard.

       The wcpncpy() and wcsncpy() functions 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-character 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         top

       If any null wide-character codes were written into the destination,
       the wcpncpy() function shall return the address of the first such
       null wide-character code. Otherwise, it shall return &ws1[n].

       The wcsncpy() function shall return ws1.

       No return values are reserved to indicate an error.

ERRORS         top

       No errors are defined.

       The following sections are informative.

EXAMPLES         top

       None.

APPLICATION USAGE         top

       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         top

       None.

FUTURE DIRECTIONS         top

       None.

SEE ALSO         top

       strncpy(3p), wcscpy(3p)

       The Base Definitions volume of POSIX.1‐2008, wchar.h(0p)

COPYRIGHT         top

       Portions of this text are reprinted and reproduced in electronic form
       from IEEE Std 1003.1, 2013 Edition, Standard for Information
       Technology -- Portable Operating System Interface (POSIX), The Open
       Group Base Specifications Issue 7, Copyright (C) 2013 by the
       Institute of Electrical and Electronics Engineers, Inc and The Open
       Group.  (This is POSIX.1-2008 with the 2013 Technical Corrigendum 1
       applied.) 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.unix.org/online.html .

       Any typographical or formatting errors that appear in this page are
       most likely to have been introduced during the conversion of the
       source files to man page format. To report such errors, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .

IEEE/The Open Group                 2013                         WCSNCPY(3P)

Pages that refer to this page: wchar.h(0p)strncpy(3p)wcpncpy(3p)wcscpy(3p)