atic</span> <span class="identifier">node_ptr</span> 
    <a class="link" href="splaytree_algorithms.html#idp72591904-bb"><span class="identifier">splay_down</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&amp;</span><span class="special">,</span> <span class="keyword">const</span> <span class="identifier">KeyType</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">KeyNodeP