|WCSSPN(3)||Library Functions Manual||WCSSPN(3)|
wcsspn — span a
wchar_t *s, const wchar_t
wcsspn() function spans the initial
part of the wide string s as long as the wide
characters from s occur in the wide string
wcsspn() function returns the number
of wide characters spanned.
wcsspn() function conforms to
ISO/IEC 9899:1999 (“ISO C99”)
and was first introduced in ISO/IEC 9899/AMD1:1995
(“ISO C90, Amendment 1”).
wcsspn() function was ported from
NetBSD and first appeared in
|June 5, 2013||OpenBSD-current|