proposition: Lemma cast_intpartnE m n (eq_mn : m = n) p : val (cast_intpartn eq_mn p) = val p.
proof: Proof. by subst m; case: p. Qed.
imports: HB(structures) mathcomp(all_ssreflect) mathcomp(div ssralg ssrint ssrnum binomial) tools combclass sorted ordtype