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type t
(* conversion to int *)
val to_int : t -> int
val of_int : int -> t
val of_uint : int -> t
(* conversion to a string *)
val to_string : t -> string
val of_string : string -> t
(* logical operations *)
val l_sl : t -> t -> t
val l_sr : t -> t -> t
val l_and : t -> t -> t
val l_xor : t -> t -> t
val l_or : t -> t -> t
(* Arithmetic operations *)
val add : t -> t -> t
val sub : t -> t -> t
val mul : t -> t -> t
val div : t -> t -> t
val rem : t -> t -> t
(* Specific arithmetic operations *)
val mulc : t -> t -> t * t
val div21 : t -> t -> t -> t * t
(* comparison *)
val lt : t -> t -> bool
val equal : t -> t -> bool
val le : t -> t -> bool
val compare : t -> t -> int
(* head and tail *)
val head0 : t -> t
val tail0 : t -> t
(** Used by retroknowledge *)
val add_digit : t -> t -> t
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