On: Low Level Bit Hacks You Absolutely Must Know

[bcl]

Absolutely! Some of the examples, depending on the core architecture, could benefit from a table lookup, but all are good tools to have in the box.

[pkrumins → bcl]

Exactly! And you can get these questions even in job interviews. If you want to score the intervieews, then you better know the quick ways!

[ramchip → pkrumins]

I like bit twiddling, but I'm not sure I'd take the job if a primary concern of the interviewer is whether I know the quick way to find the lowest-order bit in a 64-bit int...