ool</span> <span class="keyword">const</span> is_vec = <span class="keyword">false</span>;</div><div class="line"><a name="l00057"></a><span class="lineno">   57</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class="keyword">const</span> is_mat = <span class="keyword">true</span>;</div><div class="line"><a name="l00058"></a><span class="lineno">   58</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class=