Sophie

Sophie

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

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<a class="anchor" name="g6fc515121cf408a92ef611a3c6fdc5cc"></a><!-- doxytag: member="math_functions.h::cospif" ref="g6fc515121cf408a92ef611a3c6fdc5cc" args="(float x)" -->
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<div class="memproto">
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          <td class="memname">__device__ float cospif           </td>
          <td>(</td>
          <td class="paramtype">float&nbsp;</td>
          <td class="paramname"> <em>x</em>          </td>
          <td>&nbsp;)&nbsp;</td>
          <td></td>
        </tr>
      </table>
</div>
<div class="memdoc">

<p>
Calculate the cosine of <code>x<img class="formulaInl" alt="$\times \pi$" src="form_27.png"></code> (measured in radians), where <code>x</code> is the input argument.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd><ul>
<li>cospif(<img class="formulaInl" alt="$\pm 0$" src="form_3.png">) returns 1.</li><li>cospif(<img class="formulaInl" alt="$\pm \infty$" src="form_0.png">) returns NaN.</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-1. </dd></dl>

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