I have written a function for GSL to perform Numerical Differentiation
which I would like to offer to this project.
I saw on https://www.gnu.org/software/gsl/ that I should first propose
it as an extension, however the "How to help" link under
Extensions/Applications goes nowhere, so I wondered if there was
somewhere else to look for guidelines on setting up an extension.
I looked over most of the links to the listed extensions (many of which
are broken) and didn't see any commonality which may be the answer to my
question. In any case, to whom do I write to get added to the list of
extensions?
Thanks for your help.
FWIW, the new function is more accurate (up to 13 or 14 significant
digits vs. 9 or 10 for <gsl_deriv_central>) and can compute Nth
derivatives by passing N (1 through 9) to the function at zero
additional cost in performance. The algorithm is based upon the papers
“New Finite Difference Formulas for Numerical Differentiation”, I.R.
Khan, R. Ohba / Journal of Computational and Applied Mathematics 126
(2000) pp. 269-276
“Taylor Series Based Finite Difference Approximations of Higher-Degree
Derivatives”, I.R. Khan, R. Ohba / Journal of Computational and Applied
Mathematics 154 (2003) pp. 115-124
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_______________________________________________________________
Bob Smith - [email protected]
http://www.sudleyplace.com - http://www.nars2000.org
