Man page - wcsspn(3)

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Manual

wcsspn

NAME
LIBRARY
SYNOPSIS
DESCRIPTION
RETURN VALUE
ATTRIBUTES
STANDARDS
HISTORY
SEE ALSO

NAME

wcsspn - get length of a prefix wide-character substring

LIBRARY

Standard C library ( libc , -lc )

SYNOPSIS

#include <wchar.h>

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

DESCRIPTION

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

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

For an explanation of the terms used in this section, see attributes (7).

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STANDARDS

C11, POSIX.1-2008.

HISTORY

POSIX.1-2001, C99.

SEE ALSO

strspn (3), wcscspn (3)