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GammaRelatedGammaIC(Double, Double, Boolean) Method

Evaluate the complementary incomplete Gamma function GammaIC(x,a) = integral from x to infinity of exp(-t) * t**(a-1) GammaIC(x,a) is evaluated for arbitrary real values of A and for non-negative values of x (even though GammaIC is defined for x < 0.0), except that for x = 0 and a <= 0.0, GammaIC is undefined.

Namespace: Altaxo.Calc
Assembly: AltaxoCore (in AltaxoCore.dll) Version: 4.8.3448.0 (4.8.3448.0)
Syntax
C#
Copy
public static double GammaIC(
	double x,
	double a,
	bool bDebug
)

Parameters

x  Double
The function argument.
a  Double

[Missing <param name="a"/> documentation for "M:Altaxo.Calc.GammaRelated.GammaIC(System.Double,System.Double,System.Boolean)"]

bDebug  Boolean
If true, an exception is thrown if serious errors occur. If false, NaN is returned on errors.

Return Value

Double
Complementary incomplete Gamma function value.
Remarks
This is a translation from the Fortran version of DGAMIC, SLATEC, FNLIB, CATEGORY C7E, REVISION 920528, originally written by Fullerton W. (LANL) to C++. References: (1) W. Gautschi, A computational procedure for incomplete gamma functions, ACM Transactions on Mathematical Software 5, 4 (December 1979), pp. 466-481. (2) W. Gautschi, Incomplete gamma functions, Algorithm 542, ACM Transactions on Mathematical Software 5, 4 (December 1979), pp. 482-489.
See Also