nan</code>.
    If <code class="code">y</code> is <code class="code">nan</code>, returns either <code class="code">x</code> or <code class="code">-.&nbsp;x</code>, but it is not
    specified which.</p>
</div>
</div>

<pre><span id="VALfrexp"><span class="keyword">val</span> frexp</span> : <code class="type">float -&gt; float * int</code></pre><div class="info ">
<div class="info-desc">
<p><code class="code">frexp&nbsp;f</code> returns the pair of the significant
    and the exponent of <code class="code">f