bionic (3) wcslen.3posix.gz

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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
       wcslen, wcsnlen — get length of a fixed-sized wide-character string


SYNOPSIS
       #include <wchar.h>

       size_t wcslen(const wchar_t *ws);
       size_t wcsnlen(const wchar_t *ws, size_t maxlen);


DESCRIPTION
       For  wcslen(): 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  wcslen()  function  shall compute the number of wide-character codes in the wide-character string to
       which ws points, not including the terminating null wide-character code.

       The wcsnlen() function shall compute the smaller of the number of wide characters in the string to  which
       ws  points,  not  including  the  terminating  null  wide-character  code,  and the value of maxlen.  The
       wcsnlen() function shall never examine more than the first maxlen characters of the wide-character string
       pointed to by ws.


RETURN VALUE
       The wcslen() function shall return the length of ws.

       The  wcsnlen()  function shall return an integer containing the smaller of either the length of the wide-
       character string pointed to by ws or maxlen.

       No return values are reserved to indicate an error.


ERRORS
       No errors are defined.

       The following sections are informative.


EXAMPLES
       None.


APPLICATION USAGE
       None.


RATIONALE
       None.


FUTURE DIRECTIONS
       None.


SEE ALSO
       strlen()

       The Base Definitions volume of POSIX.1‐2008, <wchar.h>


       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 .