type t = UChar.t
exception Out_of_range
val char_of : t -> char
val of_char : char -> t
val code : t -> int
val chr : int -> t
external uint_code : t -> int = "%identity"
val chr_of_uint : int -> t
external unsafe_chr_of_uint : int -> t = "%identity"
val eq : t -> t -> bool
val compare : t -> t -> int
type uchar = t
val int_of_uchar : uchar -> int
val uchar_of_int : int -> uchar