static</span> <span class="keyword">bool</span> <a class="link" href="less.html#idp40569696-bb"><span class="identifier">op</span></a><span class="special">(</span><span class="identifier">T</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">U</span> <span class="keyword">const</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">mpl</span><span class="special">::</span><span class="i