  tvec3&lt;V1, P&gt; <span class="keyword">const</span> &amp; v1,</div>
<div class="line"><a name="l00104"></a><span class="lineno">  104</span>&#160;                        tvec3&lt;V2, P&gt; <span class="keyword">const</span> &amp; v2,</div>
<div class="line"><a name="l00105"></a><span class="lineno">  105</span>&#160;                        tvec3&lt;V3, P&gt; <span class="keyword">const</span> &amp; v3);</div>
<div class="line"><a name="l00106"></a><span class="lineno">  106</span>&#160;</div>
<div class