-spec alignof(term()) -> pos_integer().

-spec defcenum(atom(), list()) -> ok.

-spec defcstruct(atom(), [{atom(), term()}]) -> ok.

-spec defctype(atom(), term()) -> ok.

-spec defcunion(atom(), [{atom(), term()}]) -> ok.

-spec enum_to_atom(atom(), integer()) -> atom() | integer().

-spec enum_to_int(atom(), atom()) -> integer().

-spec field_info(atom(), atom()) -> {term(), non_neg_integer()} | not_found.

-spec lookup(atom()) -> term() | not_found.

-spec sizeof(term()) -> non_neg_integer().