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420 points gnabgib | 2 comments | 15 May 25 21:57 UTC | HN request time: 1.444s | source

1. userbinator ◴[16 May 25 00:33 UTC] No.44000728[source]▶

At first I thought it would be using the BCD instructions in some way, as shown near the bottom of this article: https://news.ycombinator.com/item?id=8477254

replies(1): >>44000774 #

2. kragen ◴[16 May 25 00:42 UTC] No.44000774[source]▶

Yeah, I was thinking AAM, but that wouldn't get you to 3.

A leap year check in three instructions