span class="o">=</span><span class="w"> </span><span class="nb">DEXP</span><span class="p">(</span><span class="o">-</span><span class="n">dlamba</span><span class="p">)</span>
<span class="w">               </span><span class="k">IF</span><span class="w"> </span><span class="p">(</span><span class="w"> </span><span class="n">P</span><span class="o">&gt;</span><span class="n">pf0</span><span class="w"> </span><span class="p">)</span><span class="w"> </span><span class="k">THEN</span>
<span class="c">!</span