proposition: Lemma Qdlog2_half (x : Q) : 0 < x → Qdlog2 x - 1 = Qdlog2 (mult x (/2)).
proof: Proof. intros E. now rewrite Qdlog2_mult_pow2. Qed.
imports: Coq.ZArith.ZArith Coq.QArith.QArith Coq.QArith.Qround CoRN.stdlib_omissions.Q MathClasses.interfaces.abstract_algebra MathClasses.interfaces.additional_operations MathClasses.interfaces.orders MathClasses.theory.int_pow MathClasses.orders.rationals MathClasses.implementations.stdlib_rationals MathClasses.implementations.positive_semiring_elements