/../../../doc/src/images/note.png"></td>
<th align="left">Note</th>
</tr>
<tr><td align="left" valign="top">
<p>
          The C99 standard does not distinguish between the quiet NaN and signaling
          NaN values. A quiet NaN propagates through almost every arithmetic operation
          without raising a floating-point exception; a signaling NaN generally raises
          a floating-point exception when occurring as an arithmetic operand.
        </p>
<p>
          C99 specification does not define th