                                                                                                   <a name="boost.numeric.odeint.modified_midpoint.time_type"></a><span class="identifier">time_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">algebra_type</span>                                                                                                          