T, Q&gt;&amp; x, <span class="keyword">const</span> vec&lt;4, T, Q&gt;&amp; y, <span class="keyword">const</span> vec&lt;4, T, Q&gt;&amp; a){<span class="keywordflow">return</span> <a class="code" href="a00662.html#ga8e93f374aae27d1a88b921860351f8d4">mix</a>(x, y, a);}   </div><div class="line"><a name="l00049"></a><span class="lineno">   49</span>&#160;</div><div class="line"><a name="l00050"></a><span class="lineno"><a class="line" href="a00732.html#ga0fd09e616d122bc2ed9726682ffd44b7">   50</a></span>&#16