Code Optimizations for the Brave

A wilder example of loop unrolling in C is Duff's Device, which exploits an unusual aspect of fallthrough behavior within switch statements.

https://en.wikipedia.org/wiki/Duff%27s_device

http://www.drdobbs.com/a-reusable-duff-device/184406208

https://stackoverflow.com/questions/514118/how-does-duffs-de...