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Re: Re: Re: Negabinary Number Systemby Cirollo (Friar) 
on Sep 06, 2001 at 22:27 UTC ( #110684=note: print w/ replies, xml )  Need Help?? 
Here are some of the reasons Knuth gives for the "prettiness" of balanced ternary: You can get the negative of a number simply by interchanging all of the 1's and 1's. The sign of a number can be found from it's most significant (aka leftmost) nonzero digit; positive if it is 1, negative if it is 1 (again, the sign is contained in the number itself) The operation of rounding to the nearest integer is identical to truncation, or simply deleting everything to the right of the radix (decimal) point; this is another consequence of using a "balanced" system. The reason for this is that fractional values will range from 1/2 to 1/2 (the largest fractional value you could have, 0.1, is 1/2 in base 10); so, any fractional number is expressed as it's nearest integer, plus or minus some value up to 1/2.
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