apply vNumbMoreThanOne with (radix := radix) (precision := precision);
auto with zarith.
apply Zle_trans with 0%Z;[case (dExp b)|idtac]; auto with zarith.
Qed.
(* A function that returns a bounded greater than a given r *)
Definition boundR (r : R) := boundNat (Zabs_nat (up (Rabs r))).

Theorem boundRCorrect1 : forall r : R, (r < boundR r)%R.
intros r; case (Rle_or_lt r 0); intros H'.