code">is_infinite&nbsp;x</code> is <code class="code"><span class="keyword">true</span></code> iff <code class="code">x</code> is <a href="Float.html#VALinfinity"><code class="code"><span class="constructor">Float</span>.infinity</code></a> or <a href="Float.html#VALneg_infinity"><code class="code"><span class="constructor">Float</span>.neg_infinity</code></a>.</p>
</div>
<ul class="info-attributes">
<li><b>Since</b> 4.08.0</li>
</ul>
</div>

<pre><span id="VALis_nan"><span class="keyword">val</span> is_nan