On: Formatting floating point numbers

[karmakaze]

It doesn't take much imagination to construct an example. Knowing 0.1 isn't exactly represented make a formula with it that should be exactly a half cent. Depending on fp I precision it will be slightly above or below a half cent and rounding will not work as expected. We found this in prod at a rate of hundreds to thousands of times per day it only takes volume to surface unlikely errors.

[karmakaze → karmakaze]

I thought I was clear that the result was rounded. The fp imprecision affects the correctness of rounding e.g. half to nearest even.

[Demiurge → karmakaze]

It is the rounding that seems to be an issue here.