Returns the logarithm of the Gamma function of the absolute value of
a double.
Namespace:
Imsl.Math
Assembly:
ImslCS (in ImslCS.dll) Version: 6.5.0.0
Syntax
| C# |
|---|
public static double LogGamma( double x ) |
| Visual Basic (Declaration) |
|---|
Public Shared Function LogGamma ( _ x As Double _ ) As Double |
| Visual C++ |
|---|
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.
