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Postgresql figured this out many years ago with their Decimal/Numeric type. It can handle any size number and it performs fractional arithmetic perfectly accurately - how amazingly for the 21st Century! Is comically tragic to me that all of the mainstream programming languages are still so far behind, so primitive that they do not have a native accurate number type that can handle fractions.





> how amazingly for the 21st Century!

Most languages have classes for that, some had them for decades in fact. Hardware floating point numbers target performance and most likely beat any of those classes by orders of magnitude.




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