Re: Zero or not?

[Matthias Brennwald]

Ok. Is there a way to predict the expected offset? I need to test if  
the sums across the columns of a matrix are zero, or at least within  
the bounds expected from the IEEE arithmetic.

Matthias


On 21.07.2007, at 15:17, Jordi Gutiérrez Hermoso wrote:

> On 21/07/07, Matthias Brennwald <address@hidden> wrote:
> > I expected the below code to yield only zeros, but it does not:
>
> That's just the way IEEE arithmetic works. When subtracting two
> numbers that are very close, you may not get zero, just machine
> epsilon. Try this, for fun: 0.3 - 0.2 - 0.1
>
> - Jordi G. H.




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Matthias Brennwald
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