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rubycon
searching PlanetScale…
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by
rubycon
5y ago
The code [1] includes an implementation of the FastInvSqrt that date back at least to 1996. There's an assembly and a C version, referred as SLOW_SQRT_DIV :). It uses float/int pruning through union (in C) and one or two rounds of
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Hypnagogic pop
(en.wikipedia.org)
2 points
by
rubycon
8y ago
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1 comments