s="literallayout"><span class="keyword">static</span> <span class="identifier">node_ptr</span> <a name="idp72599744-bb"></a><span class="identifier">get_header</span><span class="special">(</span><span class="keyword">const</span> <span class="identifier">node_ptr</span> <span class="special">&amp;</span> n<span class="special">)</span><span class="special">;</span></pre>
<p><span class="bold"><strong>Requires</strong></span>: "n" must be a node inserted in a tree.</p>
<p><span class="bold"><strong>Effects<