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



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

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.1-2017
       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.1-2017, <wchar.h>

COPYRIGHT
       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 at http://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, see
       https://www.kernel.org/doc/man-pages/reporting_bugs.html .



IEEE/The Open Group                  2017                            WCSSTR(3)
