th>
                  <p>
                    Returns
                  </p>
                </th>
</tr></thead>
<tbody>
<tr>
<td>
                  <p>
</p>
<pre xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="table-programlisting"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> <span class="identifier">Point1</span><span class="special">,</span> <span class="keyword">typename</span> <span class="identifier">Point2</span>