type t = Geninterp.Val.t
val of_constr : EConstr.constr -> tval to_constr : t -> EConstr.constr optionval of_uconstr : Ltac_pretype.closed_glob_constr -> tval to_uconstr : t -> Ltac_pretype.closed_glob_constr optionval of_int : int -> tval to_int : t -> int optionval of_ident : Names.Id.t -> tval to_ident : t -> Names.Id.t optionval to_list : t -> t list optionval to_option : t -> t option optionval to_pair : t -> (t * t) optionval cast : 'a Genarg.typed_abstract_argument_type -> Geninterp.Val.t -> 'a