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wcslen(3p) [posix man page]

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

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing 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  ter-
       minating  null wide-character code, and the value of maxlen.  The wcsnlen() function shall never examine more than the first maxlen charac-
       ters 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>

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy -- 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 Stan-
       dard 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								WCSLEN(3P)

Check Out this Related Man Page

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

PROLOG

       This  manual page is part of the POSIX Programmer's Manual.  The Linux implementation of this interface may differ (consult the correspond-
       ing Linux manual page for details of Linux behavior), or the interface may not be implemented on Linux.

NAME

       wcsstr -- find a wide-character substring

SYNOPSIS

       #include <wchar.h>

       wchar_t *wcsstr(const wchar_t *restrict ws1,
	   const wchar_t *restrict ws2);

DESCRIPTION

       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  wcsstr()  function shall locate the first occurrence in the wide-character string pointed to by ws1 of the sequence of wide characters
       (excluding the terminating null wide character) in the wide-character string pointed to by ws2.

RETURN VALUE

       Upon successful completion, wcsstr() shall return a pointer to the located wide-character string, or a null pointer if  the  wide-character
       string is not found.

       If ws2 points to a wide-character string with zero length, the function shall return ws1.

ERRORS

       No errors are defined.

       The following sections are informative.

EXAMPLES

       None.

APPLICATION USAGE

       None.

RATIONALE

       None.

FUTURE DIRECTIONS

       None.

SEE ALSO

       wcschr()

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

COPYRIGHT

       Portions of this text are reprinted and reproduced in electronic form from IEEE Std 1003.1, 2013 Edition, Standard for Information Technol-
       ogy -- 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 Stan-
       dard 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								WCSSTR(3P)
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