> For the complete documentation index, see [llms.txt](https://calnix.gitbook.io/aave-book/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://calnix.gitbook.io/aave-book/primer/wadraylibrary/wip-2s-complement.md).

# WIP: 2's complement

* <https://www.rareskills.io/post/signed-int-solidity>
* <https://stackoverflow.com/questions/1049722/what-is-twos-complement>
* also search 1s complement