(** Type *)

type t


(** Conversions *)

val of_float : float -> t
val to_float : t -> float

val of_int   : int -> t
val to_int   : t -> int

val of_string: string -> t
val to_string: t -> string


(** Simple operations *)

val ( + ) : t -> t -> t
val ( - ) : t -> t -> t
val ( * ) : t -> float -> t
val ( / ) : t -> float -> t
val is_null : t -> bool


(** Printers *)

val pp : Format.formatter -> t -> unit