Re: New limited range type?

[Marin David Condic <nobody@noplace.com>]

But that's just a matter of order of evaluation, which is well defined. 
You've got Left-To-Right without parens which implies one result and 
with parens, you have another result. Other equations have evaluation 
order dependencies - why not here?

More important is this: At present, what does it do with respect to 
raising an exception? With fixed precision on the RHS, it would raise an 
exception one way, but not another. Couldn't it saturate instead? With 
infinite precision on the RHS, what happens when you assign it to the 
LHS? Overflow/Exception? Why can't it saturate there? The saturation is 
primarily a benefit when it gets assigned to the LHS - not on the 
intermediate results. So long as you deal with that situation, you're 
all right.

MDC


Hyman Rosen wrote:
> 
> This is generally called saturating arithmetic, and you are
> far from the first to request it. I belive the difficulty
> lies in assigning meaning to expressions and intermediate
> results. What if you say A := B + C - D, with values such
> that (B + C) saturates but B + (C - D) does not?
> 


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