pan class="p">(</span><span class="n">an</span><span class="o">+</span><span class="mf">1.0_wp</span><span class="p">)</span><span class="o">/</span><span class="mf">2.0_wp</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="w"> </span><span class="p">,</span><span class="w"> </span><span class="n">N</span>
<span class="w">               </span><span class="n"