proposition: Lemma clamp_id x : clamp (clamp x) = clamp x.
proof: Proof. by rewrite clamp_in01 // !cp01_clamp. Qed.
imports: mathcomp(all_ssreflect all_algebra) mathcomp.classical(boolp classical_sets mathcomp_extra) xfinmap ereal reals discrete topology realseq realsum