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! GMN computes quantities for oblate radial functions with small argument.
Discussion:
This procedure computes Gmn(-ic,ix) and its derivative for oblate
radial functions with a small argument.
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:
15 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, integer ( kind = 4 ) M, the mode parameter; M = 0, 1, 2, ...
Input, integer ( kind = 4 ) N, mode parameter, N = M, M + 1, M + 2, ...
Input, real ( kind = 8 ) C, spheroidal parameter.
Input, real ( kind = 8 ) X, the argument.
Input, real ( kind = 8 ) BK(*), coefficients.
Output, real ( kind = 8 ) GF, GD, the value of Gmn(-C,X) and Gmn'(-C,X).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer(kind=4) | :: | m | ||||
| integer(kind=4) | :: | n | ||||
| real(kind=8) | :: | c | ||||
| real(kind=8) | :: | x | ||||
| real(kind=8) | :: | bk(200) | ||||
| real(kind=8) | :: | gf | ||||
| real(kind=8) | :: | gd |