# File lib/test/unit/assertions.rb, line 754
      def assert_in_epsilon(expected_float, actual_float, epsilon=0.001,
                            message="")
        _wrap_assertion do
          _assert_in_epsilon_validate_arguments(expected_float,
                                                actual_float,
                                                epsilon)
          full_message = _assert_in_epsilon_message(expected_float,
                                                    actual_float,
                                                    epsilon,
                                                    message)
          assert_block(full_message) do
            normalized_expected_float = expected_float.to_f
            delta = normalized_expected_float * epsilon.to_f
            (normalized_expected_float - actual_float.to_f).abs <= delta
          end
        end
      end