Billion row challenge: parsing temperatures fast(ish)

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. After the stream I added a version of Jon&#x27;s parse_temperature to the comparison. His…