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(* Open Source License                                                       *)
(* Copyright (c) 2018 Dynamic Ledger Solutions, Inc. <contact@tezos.com>     *)
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open Script_int_repr

type t

val of_int64 : int64 -> t

val compare : t -> t -> int

(* Convert a timestamp to a notation if possible *)
val to_notation : t -> string option
(* Convert a timestamp to a string representation of the seconds *)
val to_num_str : t -> string
(* Convert to a notation if possible, or num if not *)
val to_string : t -> string
val of_string : string -> t option

val diff : t -> t -> z num

val add_delta : t -> z num -> t

val sub_delta : t -> z num -> t

val to_zint : t -> Z.t
val of_zint : Z.t -> t