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Home MathPack Statis Functions Erf
See also: IncompleteGamma, ErfApprox 

Erf

Unit:SDL_statis
Class: none
Declaration: function Erf (x: double): double;

The function Erf returns the error function (which is a special case of the incomplete gamma function). The error function is defined as follows:

Hint 1: The complementary error function (often denoted as erfc) can be easily calculated from Erf: erfc(x) = 1-Erf(x).

Hint 2: A faster routine to calculate the error function is ErfApprox.


Last Update: 2007-Mai-19