T : sig ... endinclude Validate with type t := T.tval validate_lbound : min:t Maybe_bound.t ‑> t Validate.checkval validate_ubound : max:t Maybe_bound.t ‑> t Validate.checkval validate_bound : min:t Maybe_bound.t ‑> max:t Maybe_bound.t ‑> t Validate.checkinclude With_zero with type t := T.tval validate_positive : t Validate.checkval validate_non_negative : t Validate.checkval validate_negative : t Validate.checkval validate_non_positive : t Validate.checkval is_positive : t ‑> boolval is_non_negative : t ‑> boolval is_negative : t ‑> boolval is_non_positive : t ‑> boolval sign : t ‑> Base__.Sign0.tReturns Neg, Zero, or Pos in a way consistent with the above functions.