wcscspn
Section: C Library Functions (3)
Updated: 2022-12-15
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NAME
wcscspn - search a wide-character string for any of a set of wide characters
LIBRARY
Standard C library
(libc, -lc)
SYNOPSIS
#include <wchar.h>
size_t wcscspn(const wchar_t *wcs, const wchar_t *reject);
DESCRIPTION
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.
RETURN VALUE
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.
ATTRIBUTES
For an explanation of the terms used in this section, see
attributes(7).
| Interface | Attribute | Value
|
|
wcscspn()
| Thread safety | MT-Safe
|
STANDARDS
POSIX.1-2001, POSIX.1-2008, C99.
SEE ALSO
strcspn(3),
wcspbrk(3),
wcsspn(3)
Index
- NAME
-
- LIBRARY
-
- SYNOPSIS
-
- DESCRIPTION
-
- RETURN VALUE
-
- ATTRIBUTES
-
- STANDARDS
-
- SEE ALSO
-
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