e Code</h2>
    <div class="hl codehilite"><pre><span></span><span class="k">subroutine </span><span class="n">dexran</span><span class="p">(</span><span class="n">N</span><span class="p">,</span><span class="n">Istart</span><span class="p">,</span><span class="n">X</span><span class="p">)</span>
<span class="kt">integer</span><span class="p">,</span><span class="k">intent</span><span class="p">(</span><span class="n">in</span><span class="p">)</span><span class="w">    </span><span class="kd">::</span><spa