_CTYPE_D
#define _D _CTYPE_D
_ISCTYPE_FUNC(alnum, (_CTYPE_A|_CTYPE_D))
_ISCTYPE_FUNC(digit, _CTYPE_D)
#define isalnum(c) ((int)((_ctype_tab_ + 1)[(c)] & (_CTYPE_A|_CTYPE_D)))
#define isdigit(c) ((int)((_ctype_tab_ + 1)[(c)] & _CTYPE_D))