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          <td class="paramtype">uint const &amp;&#160;</td>
          <td class="paramname"><em>Distance</em>&#160;</td>
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          <td>)</td>
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<p>Return the value(s) ULP distance before the input value(s). </p>
<dl class="section see"><dt>See Also</dt><dd><a class="el" href="a00184.html" title="Allow the measurement of the accuracy of a function against a reference 