span class="p">)</span>
<span class="w">         </span><span class="n">l</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">l</span><span class="o">+</span><span class="mi">1</span>
<span class="w">         </span><span class="k">cycle </span><span class="n">infinite</span>
<span class="w">      </span><span class="k">endif</span>

<span class="k">      call </span><span class="n">mat_wswap</span><span class="p">(</span><span class="n">n</span><span class="o">-</s