 </span><span class="o">=</span><span class="w"> </span><span class="mf">0.0d0</span>
<span class="w">      </span><span class="k">do </span><span class="n">i</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="mi">1</span><span class="p">,</span><span class="w"> </span><span class="n">m</span>
<span class="w">         </span><span class="n">tr</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="o">-</span><span class="n">ar</span