AdvancedIntegerMathLogFactorial Method

public static double LogFactorial(
	int n
)

Public Shared Function LogFactorial ( 
	n As Integer
) As Double

public:
static double LogFactorial(
	int n
)

static member LogFactorial : 
        n : int -> float 

Parameters

n  Int32

The argument, which must be non-negative.

Return Value

This function provides accurate values of ln(n!) even for values of n which would cause n! to overflow.

Reference