Module Type BoolOrderFacts
(Import E:EqLtLe')
(Import C:HasCmp E)
(Import F:HasBoolOrdFuns' E)
(Import O:CompareBasedOrder E C)
(Import S:BoolOrdSpecs E F).
Include CompareBasedOrderFacts E C O.
(** Nota : apart from [eqb_compare] below, facts about [eqb] are in BoolEqualityFacts *)
(** Alternate specifications based on [BoolSpec] and [reflect] *)
(** Negated variants of the specifications *)
(** Basic equality laws for boolean tests *)

Lemma leb_antisym x y : y <=? x = negb (x <? y).