proposition: Theorem abs_B2R_le_emax_minus_prec : forall x, (Rabs (B2R x) <= bpow radix2 emax - bpow radix2 (emax - prec))%R.
proof: Proof. intros x. rewrite <- B2R_B2BSN. now apply abs_B2R_le_emax_minus_prec. Qed.
imports: Coq(ZArith Reals Psatz SpecFloat) Core Round Bracket Operations Div Sqrt Relative BinarySingleNaN