<span class="identifier">state_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">wrapped_state_type</span>                                                                                                                             <a name="boost.numeric.odeint.modified_midpoint.wrapped_state_type"></a><span class="identifier">wrapped_state_type</span><span class="sp