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<code><span id="TYPEELTfpclass.FP_nan"><span class="constructor">FP_nan</span></span></code></td>
<td class="typefieldcomment" align="left" valign="top"><code>(*</code></td><td class="typefieldcomment" align="left" valign="top"><div class="info ">
Not a number: result of an undefined operation<br>
</div>
</td><td class="typefieldcomment" align="left" valign="bottom"><code>*)</code></td>
</tr></tbody></table>

<div class="info ">
The five classes of floating-point numbers, as determined by
   the <a 