Paul Khuong

Paul Khuong's personal blog. Some Lisp, some optimisation, mathematical or computer.

Popular posts: 6
Total points: 837
HN comments: 251
Rank: #2,722 personal

Visit pvk.ca → RSS feedOn Hacker News Aug 2012 – May 2026

Software Engineering 6 Systems & Performance 3 Math & Algorithms 2 Programming Languages 1

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0x7FDE623822FC16E6: A magic constant for double float reciprocal (2011)

2021158 points24 comments Software Engineering details

EDIT: I never expected this post to garner so much interest. Just to be clear, using the constant is a very bad idea in almost every situation I can think of. Even instructions like RCPSS should only be used by people who are convinced that the tradeoffs are worth it (or don’t have any other choice). Subtracting from…

Tabasco Sort: a super-optimal merge sort

2012109 points5 comments Software Engineering details

Paul Khuong's personal blog. Some Lisp, some optimisation, mathematical or computer.