0;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> is_mat = <span class="keyword">false</span>;</div><div class="line"><a name="l00078"></a><span class="lineno">   78</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> is_quat = <span class="keyword">true</span>;</div><div class="line"><a name="l00079"></a><span class="lineno">   79</span>&#160;        <span class=