Mark Rages wrote:
> No, fixed point is a red herring, equivalent to a units change.

No, it's just another way of saying the same thing.  The bits in the
computer and how they are manipulated is exactly the same whether you think
of the number being fixed point with N fraction bits, or the original value
multiplied by 2**N.  In fact, fixed point is a way of looking at this that
avoids a units change.

> What I am saying is that right shifting by 1/(2**N) loses N bits of
> precision,

Actually we were talking about right shifting by N, which is the same as
dividing by 2**N or multiplying by 1/(2**N).  Right shifting by 1/(2**N)
makes no sense at all.


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