Pupazzo: A mislio sam da mi je kompjuter pametan i da tačno sabira kad ono... međutim :). Šalu na stranu ali stvarno kako dolazi do ovako očigledne i banalne greške prilikom sabiranja i kako je ispraviti?

The trouble with rounding floating point numbers
By Dan Clarke, Posted in Developer, 12th August 2006 09:55 GMT

We all know of floating point numbers, so much so that we reach for them each time we write code that does math. But do we ever stop to think what goes on inside that floating point unit and whether we can really trust it?

I hate to cast aspersions on its good name but when I hear stories of space craft crashing, inconsistent information on bank statements and pensioners being short changed (all of which have happened: see, for example, Risks Digest entries here and here ), I start to realise that there is a real danger of misusing floating point numbers. Indeed, anyone with a few years of experience under their belt will probably have either had the pleasure of dealing with a floating-point related bug; or have watched a colleague slowly go crazy over one.

the Register