                         <a name="boost.numeric.odeint.modified_midpoint.algebra_type"></a><span class="identifier">algebra_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">operations_type</span>                                                                                                                                <a name="boost.numeric.odeint.modified_midpoin