On Fri, 24 Jan 2003, Matthew Toseland wrote:

> > > > When you say powers of two - does that mean that a 5 KB file will be 
> > > > rounded to 8 KB? Or be split into 4 KB and 1 KB? If it is split, at what 
> > > 
> > > Rounded.
> > 
> > I just realized something. If files are rounded to the size which is the 
> > next power of 2, doesn't that mean that in the worst case, where the file 
> > has size n bytes, wasted space is anything up to (n-1) bytes? And in the 
> > average case (n/2) bytes? Is this space actually wasted? Is the empty 
> > space padded with zeros or random data?
> 
> No, the worst case is n/2. The average case is 3n/4. Unless we are
> talking about the source document being below the minimum 1kB.

I see what you mean. You are taking n for key size (power of 2). I was 
taking n for FILE size, which is arbitrary. If that is the case, then the 
two cases are in agreement. :-)

Regards.

Gordan


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