proposition: Lemma CintEsign x : x \in Cint -> x = (-1) ^+ (x < 0)%C * `|x|.
proof: Proof. exact: intrEsign. Qed.
imports: HB(structures) mathcomp(ssreflect ssrbool ssrfun ssrnat eqtype seq choice) mathcomp(div fintype path bigop finset prime order ssralg) mathcomp(poly polydiv mxpoly generic_quotient countalg) mathcomp(ssrnum closed_field ssrint archimedean rat intdiv) mathcomp(algebraics_fundamentals)