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Reports any comparisons to <code>Double.NaN</code> or <code>Float.NaN</code>.
Such comparisons are never meaningful, as NaN is not equal to anything, including itself.
Use the <code>Double.isNaN()</code> or <code>Float.isNaN()</code> methods instead.
<p><b>Example:</b></p>
<pre><code>
  if (x == Double.NaN) {...}
</code></pre>
<p>After the quick-fix is applied:</p>
<pre><code>
  if (Double.isNaN(x)) {...}
</code></pre>
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