Subject: incomplete Bessel function

From: [email-masked] (Isabelle Flamant)
Date: Thu, 24 Nov 94 16:00:54 +0100

Hello,

I need to calculate the incomplete Bessel function.  
The form of this function is defined by the formula

                inf
  K  (x,y) = int   exp(-(xt+(y/t))) * (t**(n-1)) dt
   n            1

with x and y .gt. 0 and arbitrary n.
More particularly, I have to evaluate this for n=0.

Does anybody have any information on the availability 
of algorithm(s) for this.

Thanks in advance.

Isabelle Flamant