     is_scalar();</span></div>
<div class="line"><a name="l00096"></a><span class="lineno">   96</span>&#160;<span class="comment">                static bool                                                                     is_vector();</span></div>
<div class="line"><a name="l00097"></a><span class="lineno">   97</span>&#160;<span class="comment">                static bool                                                                     is_matrix();</span></div>
<div class="line"><a name="l00098"></