>
<th>Compat/Leg Mode</th>
<th>Description</th></tr>
<tr>
<td>D9 E4</td>
<td>FTST</td>
<td>Valid</td>
<td>Valid</td>
<td>Compare ST(0) with 0.0.</td></tr></table>
<h2 id="description">Description<a class="anchor" href="#description">
			¶
		</a></h2>
<p>Compares the value in the ST(0) register with 0.0 and sets the condition code flags C0, C2, and C3 in the FPU status word according to the results (see table below).</p>
<figure id="tbl-3-40">
<table>
<tr>
<th>Condition</th>
<th>C3</th>
<th>C2</th>
<th>C0</