func_errors.m:011: Error: function arguments have modes, but function result
func_errors.m:011:   does not.
func_errors.m:011: Error: some but not all arguments have modes.
func_errors.m:011:   The argument without a mode is the second.
func_errors.m:012: Error: function arguments have modes, but function result
func_errors.m:012:   does not.
func_errors.m:013: Error: function result has mode, but function arguments do
func_errors.m:013:   not.
func_errors.m:019: Error: some but not all arguments have modes.
func_errors.m:019:   The arguments without modes are the second and third.