proposition: Lemma real_field_typ_subproof (R : realFieldType) (x : R) : Signed.spec 0%R ?=0 >=<0 x.
proof: Proof. exact: real_domain_typ_subproof. Qed.
imports: HB(structures) Coq(ssreflect ssrfun ssrbool) mathcomp(ssrnat eqtype choice order ssralg ssrnum ssrint) mathcomp(mathcomp_extra)