val (&&) : bool t -> bool t -> bool tval (||) : bool t -> bool t -> bool tval (+) : int t -> int t -> int tval (-) : int t -> int t -> int tval (*) : int t -> int t -> int tval (/) : int t -> int t -> int tval (+.) : float t -> float t -> float tval (-.) : float t -> float t -> float tval (*.) : float t -> float t -> float tval (/.) : float t -> float t -> float tval (**) : float t -> float t -> float tval (?>) : 'a t -> ( 'a -> 'b t ) -> 'b tmodule Pixel : sig ... end