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by PaulHoule 2540 days ago
The use of binary in the numerator is not the problem with using floats for financial math, it is the use of powers of 2 in the denominator.

The numerator is just an integer and integers are just integers and the base doesn't matter. But if the exponent is base 2, then you can have 1/2, 1/4, 1/8 on the base but not 1/5 or 1/10.