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The fastest "Is Leap Year" functions

benjoffe.com · published 10 December 2025

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1blogs citing

First cited: 9 Aug 2026
Most recent: 9 Aug 2026
Rank this month: not ranked
Links from this post: 8
Words captured: 2,376

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Counting the days, revisited Read at the source ↗

9 Aug 2026

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https://github.com/cassioneri/calendar

github.com

https://github.com/gcc-mirror/gcc/commit/86a0df1a6c7fe4a835620b868e76ea78d42d6620

github.com

https://hueffner.de/falk/blog/a-leap-year-check-in-three-instructions.html

hueffner.de

https://github.com/time-rs/time

github.com

https://github.com/time-rs/time/issues/758

github.com

https://github.com/benjoffe/fast-date-benchmarks/blob/main/benchmarks/leap_tests.cpp

github.com

https://github.com/benjoffe/fast-date-benchmarks/blob/main/algorithms_ordinal/ordinal_benjoffe_fast32.hpp

github.com

https://x.com/benjoffe

x.com