OpenEuphoria

Re: BUG! Erratic for loop behavior

• Posted by Rolf Schröder <r.schr at t-online.de> Mar 24, 2002
• 620 views

petelomax at blueyonder.co.uk wrote:
> 
> 
> On Sat, 23 Mar 2002 20:36:14 +0100, Rolf Schröder <r.schr at t-online.de>
> wrote:
> 
> >Actually, 0.1 (dec.) is has
> >an unlimited binary representation: 0.0001100110011..... .
> 
> Sanity check required. Kinda understand. Kinda appreciate I may have
> been mollycoddled over many years, or somesuch.
> 
> Where'd you get this from, please.
> 

You do it yourself!
The decimal 0.1 is equal 1/10 . Written with binary numbers it's 1/1010
. Now you fulfill a 'written' division as you may be used to do for
decimal numbers (but now you have only 0 and 1 as digits):

   1: 1010  = 0.0001100110011....
----------- 
   10: 1010 = 0
   ---------
   100 : 1010 = 0
   -----------
*  1000 : 1010 = 0
   ------------
   10000 : 1010 = 1
   -1010
  ------
     1100 : 1010 = 1
    -1010
   ------
       100 : 1010 = 0
       ----------
       1000 : 1010 = 0  from here the same as (*) and therefore
repeated.

One has to become familiar with this kind of calculations :) .

Have a nice division, Rolf