Messages in this thread |  | | Date | Sun, 22 Dec 1996 14:05:43 +0100 (MET) | From | Philipp Frauenfelder <> | Subject | re: AMD (fwd) |
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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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