IN THE CLOSED INTERVAL 0 TO N.</span>
<span class="c">!</span>
<span class="w">                     </span><span class="k">IF</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">ix2</span><span class="o">&lt;</span><span class="mi">0</span><span class="w"> </span><span class="p">)</span><span class="w"> </span><span class="n">ix2</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">0</span>
<span class="w">                  