sig
val graph : ?loops:bool -> v:int -> e:int -> unit -> Sig_pack.S.t
val labeled :
(Sig_pack.S.V.t -> Sig_pack.S.V.t -> Sig_pack.S.E.label) ->
?loops:bool -> v:int -> e:int -> unit -> Sig_pack.S.t
val gnp : ?loops:bool -> v:int -> prob:float -> unit -> Sig_pack.S.t
val gnp_labeled :
(Sig_pack.S.V.t -> Sig_pack.S.V.t -> Sig_pack.S.E.label) ->
?loops:bool -> v:int -> prob:float -> unit -> Sig_pack.S.t
end