bug is limited to six numbers from 65,534.99999999995 to 65,535

[juan_gandhi]

In a blog post, Microsoft employee David Gainer said that when computer users tried to get Excel 2007 to multiply some pairs of numbers and the result was 65,535, Excel would incorrectly display 100,000 as the answer.

Gainer said Excel makes mistakes multiplying 77.1 by 850, 10.2 by 6,425 and 20.4 by 3,212.5, but the program appears to be able to handle 16,383.75 times 4.

Comments

[vital-sol.livejournal.com]

explaining the excel bug (http://joelonsoftware.com/items/2007/09/26b.html)

[spamsink.livejournal.com]

Unfortunately, explaining nothing. What really needs to be explained is not the nuts and bolts, but why they had reinvented the wheel and not used printf that does not have the bug, in the first place.

And I'd still like to see that brain-dead algorithm they've used.