Comment by lifthrasiir

> Oh man yeah tell me about it; I attempted this way back when and gave up lol. I was doing a bunch of research into arbitrary precision libraries and the benchmarks all contain "rendering a big 'ol floating point number" and that's why. Wild.

Yes, it is a stuff that people generally don't even realize its existence. To my knowledge only RapidJSON and simdjson seriously invested in optimizing this aspect---their authors do know this stuff and difficulty. Others tend to use a performant but not optimal library like double-conversion (which was the SOTA at the time of release!).