>      </span><span class="n">yi</span><span class="w"> </span><span class="o">=</span><span class="w"> </span><span class="n">tr</span><span class="o">/</span><span class="mf">2.0d0</span>
<span class="w">   </span><span class="k">else</span>
<span class="k">      call </span><span class="n">la_err</span><span class="p">(</span><span class="mi">32</span><span class="p">)</span><span class="w"> </span><span class="c">! Singularity of LOG or ATAN</span>
<span class="w">   </span><span class="k">endif</span>
