wcsspn(3) — Linux manual page

wcsspn(3)               Library Functions Manual               wcsspn(3)

NAME         top

       wcsspn - get length of a prefix wide-character substring

LIBRARY         top

       Standard C library (libc, -lc)

SYNOPSIS         top

       #include <wchar.h>

       size_t wcsspn(const wchar_t *wcs, const wchar_t *accept);

DESCRIPTION         top

       The wcsspn() function is the wide-character equivalent of the
       strspn(3) function.  It determines the length of the longest
       initial segment of wcs which consists entirely of wide-characters
       listed in accept.  In other words, it searches for the first
       occurrence in the wide-character string wcs of a wide-character
       not contained in the wide-character string accept.

RETURN VALUE         top

       The wcsspn() function returns the number of wide characters in
       the longest initial segment of wcs which consists entirely of
       wide-characters listed in accept.  In other words, it returns the
       position of the first occurrence in the wide-character string wcs
       of a wide-character not contained in the wide-character string
       accept, or wcslen(wcs) if there is none.

ATTRIBUTES         top

       For an explanation of the terms used in this section, see
       attributes(7).
       ┌─────────────────────────────────────┬───────────────┬─────────┐
       │ Interface                           │ Attribute     │ Value   │
       ├─────────────────────────────────────┼───────────────┼─────────┤
       │ wcsspn()                            │ Thread safety │ MT-Safe │
       └─────────────────────────────────────┴───────────────┴─────────┘

STANDARDS         top

       C11, POSIX.1-2008.

HISTORY         top

       POSIX.1-2001, C99.

SEE ALSO         top

       strspn(3), wcscspn(3)

COLOPHON         top

       This page is part of the man-pages (Linux kernel and C library
       user-space interface documentation) project.  Information about
       the project can be found at 
       ⟨https://www.kernel.org/doc/man-pages/⟩.  If you have a bug report
       for this manual page, see
       ⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
       This page was obtained from the tarball man-pages-6.9.1.tar.gz
       fetched from
       ⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
       2024-06-26.  If you discover any rendering problems in this HTML
       version of the page, or you believe there is a better or more up-
       to-date source for the page, or you have corrections or
       improvements to the information in this COLOPHON (which is not
       part of the original manual page), send a mail to
       man-pages@man7.org

Linux man-pages 6.9.1          2024-05-02                      wcsspn(3)

Pages that refer to this page: strspn(3),  wcscspn(3),  signal-safety(7)

HTML rendering created 2024-06-26 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH.