type wint_t
type wctrans_t
type wctype_t

function int iswalnum (wint_t)
function int iswalpha (wint_t)
function int iswcntrl (wint_t)
function int iswdigit (wint_t)
function int iswgraph (wint_t)
function int iswlower (wint_t)
function int iswprint (wint_t)
function int iswpunct (wint_t)
function int iswspace (wint_t)
function int iswupper (wint_t)
function int iswxdigit (wint_t)
function int iswctype (wint_t, wctype_t)
function wint_t towctrans (wint_t, wctrans_t)
function wint_t towlower (wint_t)
function wint_t towupper (wint_t)
function wctrans_t wctrans (const char*)
function wctype_t wctype (const char*)

macro WEOF

allow-header ctype.h
allow-header stdio.h
allow-header stdarg.h
allow-header stdlib.h
allow-header string.h
allow-header stddef.h
allow-header time.h
allow-header wchar.h

allow is*
allow to*
allow *_t