2min chapter

The Array Cast cover image

Raul Miller - Precision

The Array Cast

CHAPTER

How to Parse a Number

I knew this was a problem when I made the compiler at first. I didn't know how to fix it. It wasn't really clear to me at first how to make something that parses. And so what does work is to take the five digits above that, because actually any five digit number times 10 to the 15th can be exactly rounded. You have to read thousands of digits to get an exact result for floating point numbers. No programming language is really going to go that far.

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