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! INCOG computes the incomplete gamma function r(a,x), Γ(a,x), P(a,x).
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:
22 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, real ( kind = 8 ) A, the parameter.
Input, real ( kind = 8 ) X, the argument.
Output, real ( kind = 8 ) GIN, GIM, GIP, the values of
r(a,x), Γ(a,x), P(a,x).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| real(kind=8) | :: | a | ||||
| real(kind=8) | :: | x | ||||
| real(kind=8) | :: | gin | ||||
| real(kind=8) | :: | gim | ||||
| real(kind=8) | :: | gip |