Steve Wozniak's floating point routines for the 6502
Woz was scary good at both hw and sw (author of Apple BASIC.) If you have time, go through his various Apple documents online.I believe he was never the same after his small plane crashed. (Back then, wealthy people used small planes like ATVs, and had about the same safety record.)I worked with another hw engineer of similar ability back in the 80s.Mind-blowing watching him just pick up a pen and draw out a complete board schematic at lunch, then getting the working board back from mfg. the following week and launching it on the Space Shuttle.