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Regarding Calculator and low precision values
Authored by: jsuen on Dec 12, '05 09:59:36AM

Whether a number is odd or even is usually not as important as the magnitude of the error. For example, 5.5+3.5+2.5=11. If we round 5 up, we get 6+4+3=13. If we round to even, we get 6+4+2=12. The effect only appears on longer chains of numbers, where the bias of 5 adds up.

Round to even is done on any modern processor. The IRS doesn't care whether your income is odd or even, but they do care if you're $1,000 off.



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