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Subjectre: AMD (fwd)

On Sun, 22 Dec 1996, Adam D. Bradley wrote:

[snip]
> > <SNIP!>
> > _ _
> > Well, they still have to do a bit of funny math... 33.33 * 3 = 99.99
> > <this is an example of 100 :>

Well. Go back and investigate the rules for floating point notation
('Dezimalpunktschreibweise' in german)
_ _
in math and you will see, that anything like 0.19 or 9.9 is
illegal. These numbers are (per definition) equal to 0.2 or 10.

> You've been thinking in floating-point too long... ;-)
> _
> x = 33.33 _
> 10x = 333.33 _ _
> 10x - x = 333.33 - 33.33
> 9x = 300
> x = 300/9 = 100/3
> 3x = 100 even, no infinitessimal error or "funny math"

A rather complicated way to show the obivous :-) What he wanted to say
_
is: 3 * 1/3 = 1. (1/3 = 0.3)

cu
Philipp

-- Philipp Frauenfelder home: pfrauenf@niederglatt.lugs.ch --
-- Tel./Fax: +41 1 850 54 64 school: pfrauenf@math.ethz.ch --


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