>  172</span>&#160;                T <span class="keyword">const</span> &amp; t1,</div>
<div class="line"><a name="l00173"></a><span class="lineno">  173</span>&#160;                T <span class="keyword">const</span> &amp; t2,</div>
<div class="line"><a name="l00174"></a><span class="lineno">  174</span>&#160;                T <span class="keyword">const</span> &amp; t3);</div>
<div class="line"><a name="l00175"></a><span class="lineno">  175</span>&#160;</div>
<div class="line"><a name="l00178"></a><span