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Next: <a href="Log-Complementary-Error-Function.html#Log-Complementary-Error-Function" accesskey="n" rel="next">Log Complementary Error Function</a>, Previous: <a href="Error-Function.html#Error-Function" accesskey="p" rel="previous">Error Function</a>, Up: <a href="Error-Functions.html#Error-Functions" accesskey="u" rel="up">Error Functions</a> &nbsp; [<a href="Function-Index.html#Function-Index" title="Index" rel="index">Index</a>]</p>
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<a name="Complementary-Error-Function-1"></a>
<h4 class="subsection">7.15.2 Complementary Error Function</h4>

<dl>
<dt><a name="index-gsl_005fsf_005ferfc"></a>Function: <em>double</em> <strong>gsl_sf_erfc</strong> <em>(double <var>x</var>)</em></dt>
<dt><a name="index-gsl_005fsf_005ferfc_005fe"></a>Function: <em>int</em> <strong>gsl_sf_erfc_e</strong> <em>(double <var>x</var>, gsl_sf_result * <var>result</var>)</em></dt>
<dd><p>These routines compute the complementary error function 
<em>erfc(x) = 1 - erf(x) = (2/\sqrt(\pi)) \int_x^\infty \exp(-t^2)</em>.
</p></dd></dl>





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