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! JYNDD: Bessel functions Jn(x) and Yn(x), first and second derivatives.
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:
02 August 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 ) N, the order.
Input, real ( kind = 8 ) X, the argument.
Output, real ( kind = 8 ) BJN, DJN, FJN, BYN, DYN, FYN, the values of
Jn(x), Jn'(x), Jn"(x), Yn(x), Yn'(x), Yn"(x).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| integer(kind=4) | :: | n | ||||
| real(kind=8) | :: | x | ||||
| real(kind=8) | :: | bjn | ||||
| real(kind=8) | :: | djn | ||||
| real(kind=8) | :: | fjn | ||||
| real(kind=8) | :: | byn | ||||
| real(kind=8) | :: | dyn | ||||
| real(kind=8) | :: | fyn |