alt Hacker NewsTrue, but those who do not use decimal floating-point numbers do not use such binary floating-point numbers.
They use binary fixed-point numbers/integers, where such computations are exact, while not having the huge computational overhead of decimal floating-point numbers.
Indeed, though this is platform dependent. Mainframes have strong hardware support for decimal fixed-point arithmetic, making it the preferred representation for fixed-scale business data, though conceptually it's very similar to binary fixed-point.
Decimal floating-point is also hardware-supported, so it doesn’t carry the same computational overhead it does on platforms where it must be implemented in software.