val to_int : int32 -> intval add : int32 -> int32 -> int32val shift_left : int32 -> int -> int32val shift_right_logical : int32 -> int -> int32val shift_right : int32 -> int -> int32val logand : int32 -> int32 -> int32val logxor : int32 -> int32 -> int32val logor : int32 -> int32 -> int32val of_int : int -> int32val mul : int32 -> int32 -> int32