package electrod

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Relation scopes.

type relation = private

| Plain_relation of TupleSet.t * TupleSet.t
(*
inv: inf in sup
*)
| Partial_function of int * TupleSet.t
(*
int is the domain arity (inv: >= 0); inf = empty
*)
| Total_function of int * TupleSet.t
(*
int is the domain arity (inv: >= 0); inf = empty
*)

type t = private

Constructors

val exact : TupleSet.t -> t

val plain_relation : TupleSet.t -> TupleSet.t -> relation

val partial_function : int -> TupleSet.t -> relation

val total_function : int -> TupleSet.t -> relation

val inexact : relation -> t

val included_in : TupleSet.t -> t -> bool

included_in ts scope tells whether ts is in the scope (meaning it also contains the lower bound of the scope if the latter is inexact.)

val inf : t -> TupleSet.t

Return the inf and sup bounds of the scope.

val sup : t -> TupleSet.t

val must : t -> TupleSet.t

Return the must and may (= sup - inf; computation is cached) bounds of the scope.

val may : t -> TupleSet.t

val is_partial : t -> bool

val inferred_arity : t -> int

0 if the arity cannot be inferred (= is unknown), n > 0 otherwise.

include Intf.Print.S with type t := t

val pp : t Fmtc.t

val to_string : t -> string