"special">...</span> <span class="special">&gt;</span> <a name="boost.numeric.odeint.runge_kutta4_classic.stepper_base_type"></a><span class="identifier">stepper_base_type</span><span class="special">;</span>
  <span class="keyword">typedef</span> <span class="identifier">stepper_base_type</span><span class="special">::</span><span class="identifier">state_type</span>                            <a name="boost.numeric.odeint.runge_kutta4_classic.state_type"></a><span class="identifier">state_type</span><span