AdvancedComplexMathEin Method

public static Complex Ein(
	Complex z
)

Public Shared Function Ein ( 
	z As Complex
) As Complex

public:
static Complex Ein(
	Complex z
)

static member Ein : 
        z : Complex -> Complex 

Parameters

z  Complex

The complex argument.

Return Value

The entire exponential integral function can be defined by an integral or an equivalent series.

Both Ei(x) and E₁(z) can be obtained from Ein(z).

Unlike either Ei(x) or E₁(z), Ein(z) is entire, that is, it has no poles or cuts anywhere in the complex plane.

Reference