(* ** Examples *)
Arguments mult : simpl never.
Arguments plus : simpl never.
(* Disable the warnings regarding [Undo]. This is a demonstration file. *)
Set Warnings "-undo-batch-mode,-non-interactive".
(* *** Copy.v *)
Definition CopyValue_sizefun {sigX X : Type} {cX : codable sigX X} (x : X) : Vector.t (nat->nat) 2 := [|id; CopyValue_size x|].

Lemma CaseNat_SpecT (y : nat) :
TripleT
(≃≃([], [|Contains _ y|]))
CaseNat_steps
CaseNat
(fun yout =>
tspec  ([if yout then y <> 0 else y = 0],[|Contains _ (pred y)|])).