lass="keyword">val</span> neg_infinity</span> : <code class="type">float</code></pre><div class="info ">
Negative infinity.<br>
</div>

<pre><span id="VALnan"><span class="keyword">val</span> nan</span> : <code class="type">float</code></pre><div class="info ">
A special floating-point value denoting the result of an
   undefined operation such as <code class="code">0.0 /. 0.0</code>.  Stands for
   'not a number'.  Any floating-point operation with <code class="code">nan</code> as
   argument returns <code