I ported some Algol code into C years ago, despite being completely unfamiliar with Algol I found code very easy to understand. Found the paper with original c

I ported some Algol code into C years ago, despite being completely unfamiliar with Algol I found code very easy to understand. Found the paper with original code here, it's for a Reinsch spline: https://tlakoba.w3.uvm.edu/AppliedUGMath/auxpaper_Reinsch_1967.pdf https://tlakoba.w3.uvm.edu/AppliedUGMath/auxpaper_Reinsch_19...