Comparable.With_zero
module T : sig ... end
include With_zero with type t := T.t
val is_positive : T.t -> bool
val is_non_negative : T.t -> bool
val is_negative : T.t -> bool
val is_non_positive : T.t -> bool
val sign : T.t -> Sign.t
Returns Neg, Zero, or Pos in a way consistent with the above functions.
Neg
Zero
Pos