Bessel function of arbitrary order

Hi,

I am trying to use spherical Bessel function (of arbitrary order) but haven't find a demo on this. Is there a tutorial demo available?

Thank you.

have a look into:
github.com/NGSolve/ngs-special-functions

here we are adding special functions from the third party library SLATEC,

best, Joachim

Joachim,

I tried to install ngs-special-functions with the current version of ngsolve
NGSolve-6.2.1902-139-gc4543a8
The installation went through but it gave me a bug when I import
ngsolve.special_functions
It says
undefined symbol: zbesj_

Hi Guosheng,

I experienced this issue once before but cannot reproduce it anymor. Try to configure/build it again sequentially (i.e. make without '-j')

I got the following error:

CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
F2C_LIBRARY
linked by target "special_functions" in directory ../ngsolve-src/ngs-special-functions/src

-- Configuring incomplete, errors occurred!

Is it due to my outdated version of Ngsolve?

that works now! Thanks, Matthiash.