News for hackers. Stuff that matters.

A comment on Two's complement – You beauty.

Re:Two's complement – You beauty by crawfordcomeaux on Wednesday January 11, 2017 @03:09AM (#13372500)
Would it be possible to use - 0 & +0 in useful ways, like determining "direction" of previous operation? No clue how that could be useful, but I'm betting there's a use case out there.
[ Parent | on HN ]
Re:Two's complement – You beauty by cmrx64 on Wednesday January 11, 2017 @03:28AM (#13372566)
Yes! Although I'm not sure if it would ever be useful for integers, it's vital in floating point: https://people.freebsd.org/~das/kahan86branch.pdf
[ Parent | on HN ]