sig
type 'a bot_or_not = Bot | Not_bot of 'a
type maybe_bool = Sure_value of bool | Maybe
type 'a top_or_not = Top | Not_top of 'a
type 'a flat_lattice = Val of 'a | Any | Undefined
val lub :
'a Usual_domains.flat_lattice ->
'a Usual_domains.flat_lattice -> 'a Usual_domains.flat_lattice
val glb_list :
'a list Usual_domains.flat_lattice ->
'a list Usual_domains.flat_lattice -> 'a list Usual_domains.flat_lattice
end