><span class="p">(</span><span class="nb">len</span><span class="p">)</span>
<span class="n">doubleprecision</span><span class="w"> </span><span class="kd">::</span><span class="w"> </span><span class="n">s</span><span class="p">,</span><span class="n">t</span><span class="p">,</span><span class="n">z</span>
<span class="kt">integer</span><span class="w">         </span><span class="kd">::</span><span class="w"> </span><span class="n">i</span>
<span class="kt">integer</span><span class="w">         </span><