module type Verified_std_spec =sig..end
Int.t, Int32.t, Int63.t
    Int64.t, Nativeint.t, Float.t) to enrich them with Pos.t,
    Pos0.t, Neg.t, and Neg0.t modules, and the Make_bounded and
    Make_bounded_unsafe functors.include Number.Spec
val module_name : stringval zero : t