When
· Twenties
· · 2024
· · · August
· · · · 28 (1 entry)
Q Numbers Redux · Back in July I wrote about Q numbers, which make it possible to compare numeric values using a finite automaton. It represented a subset of numbers as 14-hex-digit strings. In a remarkable instance of BDD (Blog-Driven Development, obviously) Arne Hormann and Axel Wagner figured out a way to represent all 64-bit floats in at most ten bytes of UTF-8 and often fewer. This feels nearly miraculous to me; read on for heroic bit-twiddling ...
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