Random.State

`sig type t val make : int array -> Random.State.t val make_self_init : unit -> Random.State.t val copy : Random.State.t -> Random.State.t val bits : Random.State.t -> int val int : Random.State.t -> int -> int val int32 : Random.State.t -> Int32.t -> Int32.t val nativeint : Random.State.t -> Nativeint.t -> Nativeint.t val int64 : Random.State.t -> Int64.t -> Int64.t val float : Random.State.t -> float -> float val bool : Random.State.t -> bool end`