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wcsspn(3p)

IEEE/The Open Group
2013

man-pages

Linux kernel and C library user-space interface documentation

man-pages-posix

POSIX Manual Pages

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

wcsspn — get the length of a wide substring

SYNOPSIS

#include <wchar.h>

size_t wcsspn(const wchar_t *ws1, const wchar_t *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 wcsspn() function shall compute the length (in wide characters) of the maximum initial segment of the wide-character string pointed to by ws1 which consists entirely of wide-character codes from the wide-character string pointed to by ws2.

RETURN VALUE

The wcsspn() function shall return the length of the initial substring of ws1; no return value is 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

wcscspn()
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 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 .
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