class="special">&amp;</span><span class="special">,</span> <span class="identifier">time_type</span><span class="special">,</span> <span class="identifier">time_type</span><span class="special">,</span> 
                      <span class="identifier">time_type</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="const_step_iterator.html#idp40498384-bb"><span class="identifier">const_step_iterator</span></a><span class="special">(</span><span class="identifier">Stepper</