It’s surprisingly useful, and shows up everywhere from chess to molecular biology—-but the CPU instruction probably exists because of its use in code-breaking.

It’s surprisingly useful, and shows up everywhere from chess to molecular biology—-but the CPU instruction probably exists because of its use in code-breaking. This article has a lot of interesting examples. https://vaibhavsagar.com/blog/2019/09/08/popcount/ https://vaibhavsagar.com/blog/2019/09/08/popcount/