output"><span class="keyword">float</span></code>, <code class="computeroutput"><span class="keyword">double</span></code>, or <code class="computeroutput"><span class="keyword">long</span>
                <span class="keyword">double</span></code>.
              </li>
<li class="listitem">
                <span class="bold"><strong>Returns:</strong></span> <code class="computeroutput"><span class="keyword">true</span></code>
                when <code class="computeroutput"><span class="identifier">x</span