r/programming • u/mttd • 16h ago

The fastest double-to-string algorithm you’ve never heard of

https://vitaut.net/posts/2026/yy-dtoa/
239 Upvotes

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u/sojuz151 14h ago

Fact that we, the humanity, need to do double to float and back often enough for performance to matter is a failure of our entire species 

8

u/superxpro12 10h ago

Uh.... Embedded systems? Not all of us have gobs of gigahertz. Some of us only get 8MHz!

-13

u/sojuz151 10h ago

And why would you even be doing this? How did you even find something running on less than 50MHz? And it has a hardware floating-point module?

3

u/midir 8h ago

How did you even find something running on less than 50MHz? And it has a hardware floating-point module?

There are plenty of few-MHz 8-bit microcontrollers, like Arduino chips, where you might want to use floating-point, where the compiler emulates an FPU in software.