namespace boost {
namespace numeric {
namespace odeint {
template<typename Value, typename Algebra = range_algebra,
typename Operations = default_operations>
class default_error_checker;
template<typename ErrorStepper, typename ErrorChecker, typename Resizer>
class controlled_runge_kutta<ErrorStepper, ErrorChecker, Resizer, explicit_error_stepper_tag>;
template<typename ErrorStepper, typename ErrorChecker, typename Resizer>
class controlled_runge_kutta<ErrorStepper, ErrorChecker, Resizer, explicit_error_stepper_fsal_tag>;
}
}
}