(** [memval_inject] and compositions *)

(* Specifications: *)
Lemma memval_inject_compose:
forall f f' v1 v2 v3,
memval_inject f v1 v2 -> memval_inject f' v2 v3 ->
memval_inject (compose_meminj f f') v1 v3.
Lemma memval_inject_compose:
forall f f' v1 v2 v3,
memval_inject f v1 v2 -> memval_inject f' v2 v3 ->
memval_inject (compose_meminj f f') v1 v3.