module Abstract1:sig
..end
val is_polkagrid : 'a Apron.Abstract1.t -> bool
true
iff the argument manager is a polkagrid valueval of_polkagrid : 'a PolkaGrid.t Apron.Abstract1.t -> 'b Apron.Abstract1.t
val to_polkagrid : 'a Apron.Abstract1.t -> 'b PolkaGrid.t Apron.Abstract1.t
Failure
if the argument manager is not a polkagrid manager