IMSL Fortran Math Special Functions Library
Usage Notes
The notation used in this chapter follows that of Abramowitz and Stegun (1964).
The following is a plot of the exponential integral functions that can be computed by the routines described in this chapter.
Figure 3.2 —
Plot of
e
x
E
(
x
),
E
1
(x) and
Ei
(
x
)
