[Haskell-cafe] rounding errors with real numbers.
fis at wiwi.hu-berlin.de
Fri Mar 3 09:28:51 EST 2006
ok, now i am intimidated enough to give up. (-:.
thanks for trying, though.
On Fri, Mar 03, 2006 at 03:19:44PM +0100, Henning Thielemann wrote:
> To: Matthias Fischmann <fis at wiwi.hu-berlin.de>
> cc: haskell-cafe at haskell.org
> From: Henning Thielemann <lemming at henning-thielemann.de>
> Date: Fri, 3 Mar 2006 15:19:44 +0100 (MET)
> Subject: Re: [Haskell-cafe] rounding errors with real numbers.
> On Fri, 3 Mar 2006, Matthias Fischmann wrote:
> > 1 + epsilon - 1 == epsilon, which is zero except for a very small
> > rounding error somewhere deep in the e-minus-somethings. how is the
> > error getting worse than that, for which numbers?
> I meant the relative error. epsilon should be the result, but the computer
> says 0, so the absolute error is epsilon and the relative error is 1, that
> is the number of reliable digits in the mantissa of the result is 0.
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