<span class="special">&gt;</span>
<span class="identifier">calculation_type</span><span class="special">&lt;</span> <span class="identifier">Point1</span><span class="special">,</span> <span class="identifier">Point2</span> <span class="special">&gt;::</span><span class="identifier">type</span> <span class="identifier">apply</span><span class="special">(</span><span class="identifier">Point1</span> <span class="keyword">const</span> <span class="special">&amp;</span> <span class="identifier">p1</span><span 