Link code from netlib in fortran-bessels

[perazz]

Hi,

I've been using your refactoring of the bessels K functions from the netlib, as a reference implementation to compare against in my Fortran port of Bessels.jl.

I believe it's fair use of your MIT license code and the netlib code, but let me know if you have concerns.

BTW: that will be removed at some points, when all tests are well established enough.
Thanks,
Federico

[scivision]

Thanks for noting that. I put all the Netlib "specfun" code in the src/specfun directory and put URLs at the top of each to indicate this heritage.
Originally, I was just bootstrapping code to get the calculator working and I should have indicated this attribution from the start of the project.

I did use the Fortran 2008 Bessel intrinsics where available. It's nice your project is benchmarking the improvements from non-intrinsic code.

[perazz]

Awesome, thank you. I just wanted to be sure since I embedded the code in the repo instead of linking it.