$ErfC

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:

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• &numsp.&'sub(x) &thinsp.&'sub(2)
  1 &minus. 2&sol.&radic.&pi. &'sub(0)&int. &thinsp.e&'sup(-z) &thinsp.dz

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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.