Billion row challenge: parsing temperatures fast(ish)
https://video.infosec.exchange/w/bBkw2mCziP2Eax3nCC2mqf
I watched Jon Gjengset taking on the one billion row challenge and got interested in one small corner of it: parsing temperatures, and in particular parsing temperatures in a "branchless" style - with no `if` statements - to help the CPU run the code as fast as possible. In the end, the results were surprising.
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