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 *\nwcs\n, const wchar_t *\naccept\n);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).
| Interface | Attribute | Value |
| wcsspn () | Thread safety | MT-Safe |
STANDARDS
C11, POSIX.1-2008.
HISTORY
POSIX.1-2001, C99.
SEE ALSO
strspn(3), wcscspn(3)