e, <span class=machine><span class=font-tt>[size</span></span><span class=machine><span class=font-tt>_</span></span><span class=machine><span class=font-tt>is(*dimx, *dimy)] double d[][]</span></span>
specifies a matrix of <span class=machine><span class=font-tt>double</span></span> whose first dimension has size
<span class=machine><span class=font-tt>*dimx</span></span> and the second has size <span class=machine><span class=font-tt>*dimy</span></span>.</p>
<h3 id="sec22" class="subsection">3.4 Big arr