fact: Fixpoint LeadCoef p : cps tF := fun k => if p is c :: q then bind l <- LeadCoef q; If l == 0 Then k c Else k l else k (Const 0).
imports: mathcomp.ssreflect.ssreflect mathcomp(ssrfun ssrbool eqtype ssrnat seq choice fintype) mathcomp(finfun path matrix) mathcomp(bigop order ssralg poly polydiv ssrnum zmodp div ssrint) mathcomp(polyorder polyrcf interval polyXY) mathcomp(qe_rcf_th ordered_qelim mxtens)