Returns the logarithm of the Gamma function of the absolute value of
a double.
Namespace:
Imsl.MathAssembly: ImslCS (in ImslCS.dll) Version: 6.5.0.0
Syntax
C# |
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public static double LogGamma( double x ) |
Visual Basic (Declaration) |
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Public Shared Function LogGamma ( _ x As Double _ ) As Double |
Visual C++ |
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public: static double LogGamma( double x ) |
Parameters
- x
- Type: System..::.Double
A double value.
Return Value
A double value specifying the natural logarithm of the Gamma function of . If x is a negative integer, the result is NaN.Remarks
Method LogGamma computes . See Gamma for the definition of .
The Gamma function is not defined for integers less than or equal to zero. Also, must not be so large that the result overflows. Neither should x be so close to a negative integer that the accuracy is worse than half precision.