 class="c">!     TREAT CERTAIN SPECIAL CASES IMMEDIATELY--</span>
<span class="c">!     1) P = 0.0 OR 1.0</span>
<span class="c">!     2) P = 0.5 AND PPAR = 0.5</span>
<span class="c">!     3) PPF = 0 OR N</span>
<span class="c">!</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">/=</span><span class="mf">0.0_wp</span><span class="w"> </span><span class="p">)</span><span class="w"