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New faster algorithm for 64-bit signed floor division
Original: A new faster algorithm to compute 64-bit signed floor division
Developer Ben Joffe has published a new algorithm for computing 64-bit signed floor division, claiming it is faster than existing methods. Floor division, which rounds toward negative infinity rather than toward zero, is a common source of subtle bugs and extra instructions in low-level code, and faster implementations are of interest to compiler writers and systems programmers. The write-up has drawn attention on Hacker News, where readers are debating the approach and its performance claims.
Why now: A new performance improvement to a fundamental low-level operation naturally interests programmers and compiler developers.
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Evidence
- A new faster algorithm to compute 64-bit signed floor division · benjoffe · 158
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