wctype_t
wctype_t wctype_l(const char *, locale_t);
int iswctype(wint_t, wctype_t);
wctype_t wctype(const char *);
int iswctype_l(wint_t, wctype_t, locale_t);
iswctype(wint_t c, wctype_t charclass)
if (charclass == (wctype_t)0) {
iswctype_l(wint_t c, wctype_t charclass, locale_t locale)
if (charclass == (wctype_t)0)
wctype_t
wctype_t
#define FUNCPARA wint_t wc, wctype_t charclass
#define FUNCPARA wint_t wc, wctype_t charclass, locale_t locale
wctype_t wctyg, wctyu, wctyc;