>,</span> 
               <span class="identifier">state_type</span> <span class="special">&amp;</span> xout<span class="special">,</span> <span class="identifier">time_type</span> dt<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> System<span class="special">&gt;</span> 
  <span class="keyword">void</span> <a name="idp61120112-bb"