         <code class="computeroutput"><span class="identifier">fp_nan</span></code> when
                      <code class="computeroutput"><span class="identifier">x</span></code> is NaN;
                    </li>
<li class="listitem">
                      <code class="computeroutput"><span class="identifier">fp_normal</span></code> otherwise.
                    </li>
</ul></div>
              </li>
</ul></div>
</div>
</div>
<div class="section">
<div class="titlepage"><div><div><h4 class="title">
<a nam