</code>.  When <code class="code">f</code> is zero, the
    significant <code class="code">x</code> and the exponent <code class="code">n</code> of <code class="code">f</code> are equal to
    zero.  When <code class="code">f</code> is non-zero, they are defined by
    <code class="code">f&nbsp;=&nbsp;x&nbsp;*.&nbsp;2&nbsp;**&nbsp;n</code> and <code class="code">0.5&nbsp;&lt;=&nbsp;x&nbsp;&lt;&nbsp;1.0</code>.</p>
</div>
</div>

<pre><span id="VALldexp"><span class="keyword">val</span> ldexp</span> : <code 