I have copies of both the first and second editions of Hacker’s Delight. The second edition is mostly the same, but with a few additions and corrections. (Also printed on thicker paper with a smaller text area so it looks 2.2x thicker for 1.1x the content.)

I use it occasionally for things like optimizing tolower() https://news.ycombinator.com/item?id=31900872 and for popcount hacks https://dotat.at/prog/qp or for quickly updating a log-linear histogram https://dotat.at/@/2022-07-15-histogram.html