“FXAM—Examine Floating-Point” in this chapter). If the value in register ST(0) is a NaN or is in an undefined format, the condition flags are set to “unordered” and the invalid operation exception is generated.</p>
<p>The sign of zero is ignored, so that (– 0.0 ← +0.0).</p>
<p>This instruction’s operation is the same in non-64-bit modes and 64-bit mode.</p>
<h2 id="operation">Operation<a class="anchor" href="#operation">
			¶
		</a></h2>
<pre>CASE (relation of operands) OF
    Not comparabl