wcsspn(3)wcsspn(3)NAME
wcsspn, wcscspn - Return the length of the initial segment of a wide-
character string
SYNOPSIS
#include <wchar.h>
size_t wcsspn(
const wchar_t *wcstring1,
const wchar_t *wcstring2 ); size_t wcscspn(
const wchar_t *wcstring1,
const wchar_t *wcstring2 );
LIBRARY
Standard C Library (libc)
STANDARDS
Interfaces documented on this reference page conform to industry stan‐
dards as follows:
wcscspn(), wcsspn(): ISO C, XPG4
Refer to the standards(5) reference page for more information about
industry standards and associated tags.
PARAMETERS
Points to a wide-character string being checked for an initial segment.
Points to a wide-character string containing a set of wide characters
that define the initial segment.
DESCRIPTION
The wcsspn() and wcscspn() functions compute the number of wide charac‐
ters in the initial segment of a wide-character string. The wcsspn()
function considers the initial segment to consist of all wide charac‐
ters that are included in the set of wide characters pointed to by the
wcstring2 parameter. The function counts these wide characters until it
finds one that is not included in the set. The wcscspn() function con‐
siders the initial segment to consist of all wide characters that are
not included in the set of wide characters pointed to by the wcstring2
parameter. The function counts these wide characters until it finds one
that is included in the set.
RETURN VALUES
On successful completion, the wcsspn() and wcscspn() functions return
the number of wide characters in the segment. No error return is
defined for these functions.
SEE ALSO
Functions: setlocale(3), strspn(3), wcslen(3)
Standards: standards(5)wcsspn(3)
