I've been stress-testing Mu's floating-point instructions for a few days using this ray-tracing tutorial.

It's been great; I've found 2 bugs so far.

Today I thought I found a third, in the floating-point reciprocal instruction.

Except it wasn't really. Read on.

This post is part of my Freewheeling Apps Devlog.

Comments gratefully appreciated. Please send them to me by any method of your choice and I'll include them here.