this post was submitted on 25 Jun 2023
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submitted 1 year ago by sisyphean@programming.dev to c/programmer_humor@programming.dev
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[–] em7@programming.dev 1 points 1 year ago* (last edited 1 year ago)

Not sure what financing applications you develop. But what you suggest wouldn't pass a code review in any financial-related project I saw.

Using integers for currency-related calculations and formatting the output is no dirty hack, it's industry standard because floating-point arithmetic is, on contemporary hardware, never precise (can't be, see https://en.wikipedia.org/wiki/IEEE_754 ) whereas integer arithmetic (or integers used to represent fixed-point arithmetic) always has the same level of precision across all the range it can represent. You typically don't want to round the numbers you work with, you need to round the result ;-) .