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nvidia-cuda-toolkit-devel-4.2.9-2.mga2.nonfree.i586.rpm

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<a class="anchor" name="g3c680d660d75780ef53075a439211626"></a><!-- doxytag: member="math_functions.h::log1p" ref="g3c680d660d75780ef53075a439211626" args="(double x)" -->
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          <td class="memname">__device__ double log1p           </td>
          <td>(</td>
          <td class="paramtype">double&nbsp;</td>
          <td class="paramname"> <em>x</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td></td>
        </tr>
      </table>
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<p>
Calculate the value of <img class="formulaInl" alt="$log_{e}(1+x)$" src="form_11.png"> of the input argument <code>x</code>.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd><ul>
<li>log1p(<img class="formulaInl" alt="$\pm 0$" src="form_3.png">) returns <img class="formulaInl" alt="$-\infty$" src="form_6.png">.</li><li>log1p(-1) returns +0.</li><li>log1p(<code>x</code>) returns NaN for <code>x</code> &lt; -1.</li><li>log1p(<img class="formulaInl" alt="$+\infty$" src="form_1.png">) returns <img class="formulaInl" alt="$+\infty$" src="form_1.png">.</li></ul>
</dd></dl>
<dl class="note" compact><dt><b>Note:</b></dt><dd>For accuracy information for this function see the CUDA C Programming Guide, Appendix C, Table C-2. </dd></dl>

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