<span class="o">=</span><span class="w"> </span><span class="p">(</span><span class="n">iy</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">m2</span><span class="p">)</span><span class="w"> </span><span class="o">+</span><span class="w"> </span><span class="n">m2</span><span class="w">       </span><span class="c">! this statement is for computers where integer overflow affects the sign bit</span>

<span class="w">   </span><span class="n">mat_urand</span><span c