Functions
Function	E1 (X As Double, Optional Info As Long) As Double
	Exponential integral E1(x)

Function	Ei (X As Double, Optional Info As Long) As Double
	Exponential integral Ei(x)

Function	En (X As Double, N As Long, Optional Info As Long) As Double
	Exponential integral En(x)

Function	Li (X As Double, Optional Info As Long) As Double
	Logarithmic integral li(x)

Function	Spence (X As Double, Optional Info As Long) As Double
	Spence's function (dilogarithm) Li2(x)

Detailed Description

This is the group of C5. Exponential and logarithmic integrals.

Functions