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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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wcscspn(3) Library Functions Manual wcscspn(3)
wcscspn - search a wide-character string for any of a set of wide
characters
Standard C library (libc, -lc)
#include <wchar.h>
size_t wcscspn(const wchar_t *wcs, const wchar_t *reject);
The wcscspn() function is the wide-character equivalent of the
strcspn(3) function. It determines the length of the longest
initial segment of wcs which consists entirely of wide-characters
not listed in reject. In other words, it searches for the first
occurrence in the wide-character string wcs of any of the
characters in the wide-character string reject.
The wcscspn() function returns the number of wide characters in
the longest initial segment of wcs which consists entirely of
wide-characters not listed in reject. In other words, it returns
the position of the first occurrence in the wide-character string
wcs of any of the characters in the wide-character string reject,
or wcslen(wcs) if there is none.
For an explanation of the terms used in this section, see
attributes(7).
┌──────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├──────────────────────────────────────┼───────────────┼─────────┤
│ wcscspn() │ Thread safety │ MT-Safe │
└──────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
POSIX.1-2001, C99.
strcspn(3), wcspbrk(3), wcsspn(3)
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⟩.
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⟨https://mirrors.edge.kernel.org/pub/linux/docs/man-pages/⟩ on
2025-08-11. If you discover any rendering problems in this HTML
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man-pages@man7.org
Linux man-pages 6.15 2025-05-17 wcscspn(3)
Pages that refer to this page: strspn(3), wcspbrk(3), wcsspn(3), signal-safety(7)
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HTML rendering created 2025-09-06 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. |
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