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open Script_int

(* A type for ticket amount values to ensure positivity *)
type t = private n num

val encoding : t Data_encoding.t

(* Converts a natural number to a ticket amount value unless the input is zero *)
val of_n : n num -> t option

(* Converts a integral number to a ticket amount value unless the input is not positive *)
val of_z : z num -> t option

val of_zint : Z.t -> t option

val add : t -> t -> t

(* Subtract among ticket amount values unless the resultant amount is not positive *)
val sub : t -> t -> t option

val one : t