(** Obsolete results about boolean comparisons over [N],
    kept for compatibility with IntMap and SMC. *)

Notation Peqb_correct := Pos.eqb_refl (only parsing).Notation Neqb_correct := N.eqb_refl (only parsing).Notation Neqb_comm := N.eqb_sym (only parsing).

Lemma Nxor_eq_true n n' : N.lxor n n' = 0 -> N.eqb n n' = true.