 class="keyword">const</span> is_vec = <span class="keyword">true</span>;</div><div class="line"><a name="l00048"></a><span class="lineno">   48</span>&#160;        <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="l00049"></a><span class="lineno">   49</span>&#160;        <span class="keyword">static</span> <span class="keywordtype">bool</span> <span class="keyword">const<