LambertW Method (x)

Computes the Lambert W function.

Declaration Syntax

Visual Basic

Visual C++

public static double LambertW(
	double x
)

Public Shared Function LambertW ( _
	x As Double _
) As Double

public:
static double LambertW(
	double x
)

static member LambertW : 
        x:float -> float

Parameters

x (Double): The argument, which must be greater than or equal to -1/e.

Return Value

The value W(x).

Remarks

The Lambert W function solves the transcendental equation W e^W = x. The function appears in a number of contexts, including the solution of differential equations and the enumeration of trees.