pename</span> KeyNodePtrCompare<span class="special">&gt;</span> 
    <span class="keyword">static</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">pair</span><span class="special">&lt;</span> <span class="identifier">node_ptr</span><span class="special">,</span> <span class="identifier">node_ptr</span> <span class="special">&gt;</span> 
    <a class="link" href="splaytree_algorithms.html#idp72521744-bb"><span class="identifier">equal_range</span></a><span cl