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wcsncpy(3p) — Linux manual page

WCSNCPY(3P)             POSIX Programmer's ManualWCSNCPY(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 *restrictws2,           size_tn);       wchar_t *wcsncpy(wchar_t *restrictws1, const wchar_t *restrictws2,           size_tn);

DESCRIPTION        top

       Forwcsncpy(): 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.1‐2017 defers to the ISO C       standard.       Thewcpncpy() andwcsncpy() functions shall copy not more thann       wide-character codes (wide-character codes that follow a null       wide-character code are not copied) from the array pointed to byws2 to the array pointed to byws1.  If copying takes place       between objects that overlap, the behavior is undefined.       If the array pointed to byws2 is a wide-character string that is       shorter thann wide-character codes, null wide-character codes       shall be appended to the copy in the array pointed to byws1,       untiln wide-character codes in all are written.

RETURN VALUE        top

       If any null wide-character codes were written into the       destination, thewcpncpy() function shall return the address of       the first such null wide-character code. Otherwise, it shall       return&ws1[n].       Thewcsncpy() function shall returnws1.       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 firstn wide-       character codes of the array pointed to byws2, 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.1‐2017,wchar.h(0p)

COPYRIGHT        top

       Portions of this text are reprinted and reproduced in electronic       form from IEEE Std 1003.1-2017, Standard for Information       Technology -- Portable Operating System Interface (POSIX), The       Open Group Base Specifications Issue 7, 2018 Edition, Copyright       (C) 2018 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 athttp://www.opengroup.org/unix/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, seehttps://www.kernel.org/doc/man-pages/reporting_bugs.html .IEEE/The Open Group                2017WCSNCPY(3P)

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

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