n> <span class="keyword">typename</span> StateInOut<span class="special">,</span> <span class="keyword">typename</span> StateIn<span class="special">,</span> 
           <span class="keyword">typename</span> ABBuf<span class="special">&gt;</span> 
    <span class="keyword">void</span> <a class="link" href="adams_moulton.html#idm46275237124976-bb"><span class="identifier">do_step</span></a><span class="special">(</span><span class="identifier">System</span><span class="special">,</span> <span class="keyword"