(* *)
(**************************************************************************)
-set "baseuri" "cic:/matita/decidable_kit/eqtype/".
-
include "decidable_kit/decidable.ma".
include "datatypes/constructors.ma".
(* XXX le coercion nel cast non vengono inserite *)
definition nat_canonical_eqType : nat → nat_eqType :=
λn : nat.(n : sort nat_eqType).
-coercion cic:/matita/decidable_kit/eqtype/nat_canonical_eqType.con.
+coercion nat_canonical_eqType.
definition bcmp ≝ λx,y:bool. match x with [ true ⇒ y | false => notb y ].
definition bool_eqType : eqType ≝ mk_eqType ? ? bcmpP.
definition bool_canonical_eqType : bool → bool_eqType :=
λb : bool.(b : sort bool_eqType).
-coercion cic:/matita/decidable_kit/eqtype/bool_canonical_eqType.con.
+coercion bool_canonical_eqType.
(* ### subtype of an eqType ### *)
definition option_eqType : eqType → eqType ≝ λd:eqType.mk_eqType ? ? (ocmpP d).
definition option_canonical_eqType : ∀d:eqType.d → option_eqType d ≝
λd:eqType.λx:d.(Some ? x : sort (option_eqType d)).
-coercion cic:/matita/decidable_kit/eqtype/option_canonical_eqType.con.
+coercion option_canonical_eqType.
(* belle le coercions! *)
definition test_canonical_option_eqType ≝