e1z Subroutine

public subroutine e1z(z, ce1)

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! E1Z computes the complex exponential integral E1(z).

Licensing:

This routine is copyrighted by Shanjie Zhang and Jianming Jin.  However, 
they give permission to incorporate this routine into a user program 
provided that the copyright is acknowledged.

Modified:

16 July 2012

Author:

Shanjie Zhang, Jianming Jin

Reference:

Shanjie Zhang, Jianming Jin,
Computation of Special Functions,
Wiley, 1996,
ISBN: 0-471-11963-6,
LC: QA351.C45.

Parameters:

Input, complex ( kind = 8 ) Z, the argument.

Output, complex ( kind = 8 ) CE1, the function value.

Arguments

Type IntentOptional Attributes Name
complex(kind=8) :: z
complex(kind=8) :: ce1