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NAME | LIBRARY | SYNOPSIS | DESCRIPTION | RETURN VALUE | ATTRIBUTES | STANDARDS | HISTORY | SEE ALSO | COLOPHON |
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wcsspn(3) Library Functions Manual wcsspn(3)
wcsspn - get length of a prefix wide-character substring
Standard C library (libc, -lc)
#include <wchar.h>
size_t wcsspn(const wchar_t *wcs, const wchar_t *accept);
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.
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.
For an explanation of the terms used in this section, see
attributes(7).
┌─────────────────────────────────────┬───────────────┬─────────┐
│ Interface │ Attribute │ Value │
├─────────────────────────────────────┼───────────────┼─────────┤
│ wcsspn() │ Thread safety │ MT-Safe │
└─────────────────────────────────────┴───────────────┴─────────┘
C11, POSIX.1-2008.
POSIX.1-2001, C99.
strspn(3), wcscspn(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
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⟨https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git/tree/CONTRIBUTING⟩.
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Linux man-pages 6.9.1 2024-05-02 wcsspn(3)
Pages that refer to this page: strspn(3), wcscspn(3), signal-safety(7)
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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. |
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