t :: term
to_atom(BitString.t | List.t | Atom.t) :: Atom.t
to_float(BitString.t | List.t | Float.t | Integer.t) :: Float.t
to_integer(BitString.t | List.t | Float.t | Integer.t) :: Integer.t
to_string(BitString.t | List.t | Atom.t | Float.t | Integer.t) :: BitString.t