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(************************************************************************)
(* v * The Coq Proof Assistant / The Coq Development Team *)
(* <O___,, * INRIA - CNRS - LIX - LRI - PPS - Copyright 1999-2012 *)
(* \VV/ **************************************************************)
(* // * This file is distributed under the terms of the *)
(* * GNU Lesser General Public License Version 2.1 *)
(************************************************************************)
(** This module defines existential variables, which are isomorphic to [int].
Nonetheless, casting from an [int] to a variable is deemed unsafe, so that
to keep track of such casts, one has to use the provided {!unsafe_of_int}
function. *)
type t
(** Type of existential variables. *)
val repr : t -> int
(** Recover the underlying integer. *)
val unsafe_of_int : int -> t
(** This is not for dummies. Do not use this function if you don't know what you
are doing. *)
val equal : t -> t -> bool
(** Equality over existential variables. *)
val compare : t -> t -> int
(** Comparison over existential variables. *)
val hash : t -> int
(** Hash over existential variables. *)
module Set : Set.S with type elt = t
module Map : CMap.ExtS with type key = t and module Set := Set
|
