$ErfC: Difference between revisions

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<span class="pageSubtitle">Error function complement</span>
<span class="pageSubtitle">Error function complement</span>
<p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented
<p class="warning">Most Sirius $functions have been deprecated in favor of Object Oriented
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The <var>$ErfC</var> function returns 1 - the <var>[[$Erf]]</var> value, that is:
The <var>$ErfC</var> function returns 1 - the <var>[[$Erf]]</var> value, that is:
:hp0 font=chapn.
 
<ul>
1 &minus; 2/&radic;&pi; <sub>0</sub>&int;<sup>x</sup> e<sup>-z<sup>2</sup></sup> dz
<li>                &numsp.&'sub(x)  &thinsp.&'sub(2)
<br>
1 &minus. 2&sol.&radic.&pi. &'sub(0)&int. &thinsp.e&'sup(-z) &thinsp.dz
</ul>
:ehp0.


==Syntax==
==Syntax==

Revision as of 18:30, 6 January 2012

Error function complement

Most Sirius $functions have been deprecated in favor of Object Oriented methods. There is currently no direct OO equivalent for the $ErfC function.

The $ErfC function returns 1 - the $Erf value, that is:

1 − 2/√π  0x e-z2 dz

Syntax

%num = $ErfC(x)

See the SIRFUNC EXEC parameter for an explanation of when this high-performance, high-precision version of the IBM mathematical function from the Sirius Mods is used, as opposed to the version of the $function in the Model 204 FUND or FUNDLE CSECT.