|WCSSPN(3)||Library Functions Manual||WCSSPN(3)|
wcsspn — span a
wchar_t *s, const wchar_t
function spans the initial part of the wide string s
as long as the wide characters from s occur in the
wide string charset.
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|