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<h3 class="section">8.72 <code>ERFC</code> — Error function</h3>
<p><a name="index-ERFC-575"></a><a name="index-error-function_002c-complementary-576"></a>
<dl>
<dt><em>Description</em>:<dd><code>ERFC(X)</code> computes the complementary error function of <var>X</var>.
<br><dt><em>Standard</em>:<dd>Fortran 2008 and later
<br><dt><em>Class</em>:<dd>Elemental function
<br><dt><em>Syntax</em>:<dd><code>RESULT = ERFC(X)</code>
<br><dt><em>Arguments</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="15%"><var>X</var> </td><td valign="top" width="70%">The type shall be <code>REAL</code>.
<br></td></tr></table>
<br><dt><em>Return value</em>:<dd>The return value is of type <code>REAL</code> and of the same kind as <var>X</var>.
It lies in the range 0 \leq erfc (x) \leq 2 .
<br><dt><em>Example</em>:<dd>
<pre class="smallexample"> program test_erfc
real(8) :: x = 0.17_8
x = erfc(x)
end program test_erfc
</pre>
<br><dt><em>Specific names</em>:<dd>
<p><table summary=""><tr align="left"><td valign="top" width="20%">Name </td><td valign="top" width="20%">Argument </td><td valign="top" width="20%">Return type </td><td valign="top" width="25%">Standard
<br></td></tr><tr align="left"><td valign="top" width="20%"><code>DERFC(X)</code> </td><td valign="top" width="20%"><code>REAL(8) X</code> </td><td valign="top" width="20%"><code>REAL(8)</code> </td><td valign="top" width="25%">GNU extension
<br></td></tr></table>
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