Long time on-line friend Alfred Vachris has recently been converting Fortran code developed through his working career into VBA:
I had the opportunity to work at Grumman while going to Graduate School and they gave me a part-time job as a programmer. The first day on the job, I was handed a copy of A guide to FORTRAN programming by Daniel McCracken. It was love at first sight. I was a Mathematics major from Notre Dame, but all my courses were focused on theoretical mathematics rather than a more engineering focused piratical mathematics. I switched over to Aeronautical Engineering during my senior year. And then followed up by going to Graduate School for a degree in Astronautics.
In the early 1960’s I discovered an article in Design News, a trade magazine, that featured a short article on the Aitken Graphical Construction for generating additional points on a Parabola. This article became the foundation of my efforts to then put together my Tool Kit of codes for Tabular functions.
I am re-factoring the original FORTRAN code to Excel VBA. I was first posting on WordPress: https://alfred-excel-vachris.com/author/excel1star/
But I find it much easier to post PDF documents on LinkedIn.
Here is a list of LinkedIn posts related to the Toolkit:
Aitken Variation – Hermitian Interpolation
Graphical Twist – Alternate Brent Root Finding
Root Finding Examples – Polynomials
Slope: Numerical Differentiation of Tabular Functions
For the benefit of those (like me) not familiar with how Linkedin displays pdf documents, to display the full text and make links active:
Scroll to the bottom of the displayed page and click the “full-screen” icon at the bottom right:
At the top of the page click on “Accessibility Mode”, or the download icon: