1WCSLEN(3P)                 POSIX Programmer's Manual                WCSLEN(3P)
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PROLOG

6       This  manual  page is part of the POSIX Programmer's Manual.  The Linux
7       implementation of this interface may differ (consult the  corresponding
8       Linux  manual page for details of Linux behavior), or the interface may
9       not be implemented on Linux.
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NAME

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

16       #include <wchar.h>
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18       size_t wcslen(const wchar_t *ws);
19       size_t wcsnlen(const wchar_t *ws, size_t maxlen);
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DESCRIPTION

22       For wcslen(): The functionality described on  this  reference  page  is
23       aligned  with the ISO C standard. Any conflict between the requirements
24       described here and the ISO C standard is unintentional. This volume  of
25       POSIX.1‐2008 defers to the ISO C standard.
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27       The  wcslen() function shall compute the number of wide-character codes
28       in the wide-character string to which ws points, not including the ter‐
29       minating null wide-character code.
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31       The  wcsnlen() function shall compute the smaller of the number of wide
32       characters in the string to which ws points, not including  the  termi‐
33       nating  null  wide-character  code,  and  the  value  of  maxlen.   The
34       wcsnlen() function shall never examine more than the first maxlen char‐
35       acters of the wide-character string pointed to by ws.
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RETURN VALUE

38       The wcslen() function shall return the length of ws.
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40       The  wcsnlen()  function shall return an integer containing the smaller
41       of either the length of the wide-character string pointed to by  ws  or
42       maxlen.
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44       No return values are reserved to indicate an error.
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ERRORS

47       No errors are defined.
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49       The following sections are informative.
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EXAMPLES

52       None.
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APPLICATION USAGE

55       None.
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RATIONALE

58       None.
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FUTURE DIRECTIONS

61       None.
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SEE ALSO

64       strlen()
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66       The Base Definitions volume of POSIX.1‐2008, <wchar.h>
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69       Portions  of  this text are reprinted and reproduced in electronic form
70       from IEEE Std 1003.1, 2013 Edition, Standard for Information Technology
71       --  Portable  Operating  System  Interface (POSIX), The Open Group Base
72       Specifications Issue 7, Copyright (C) 2013 by the Institute of Electri‐
73       cal  and  Electronics  Engineers,  Inc  and  The  Open Group.  (This is
74       POSIX.1-2008 with the 2013 Technical Corrigendum  1  applied.)  In  the
75       event of any discrepancy between this version and the original IEEE and
76       The Open Group Standard, the original IEEE and The Open Group  Standard
77       is  the  referee document. The original Standard can be obtained online
78       at http://www.unix.org/online.html .
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80       Any typographical or formatting errors that appear  in  this  page  are
81       most likely to have been introduced during the conversion of the source
82       files to man page format. To report such errors,  see  https://www.ker‐
83       nel.org/doc/man-pages/reporting_bugs.html .
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87IEEE/The Open Group                  2013                           WCSLEN(3P)
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