Re: [boost] Fixed-Point Decimal Type

From: Peter Bell (pbell_at_[hidden])
Date: 2001-05-09 17:47:25

John Max Skaller wrote:
> 
> scleary_at_[hidden] wrote:
> 
> > Fixed-point arithmetic therefore shares several annoying attributes with
> > floating-point arithmetic; as an extreme example, assuming a 4-bit
> > underlying representation (ignoring signs) with the implied decimal in the
> > middle:
> >   0.1 + 0.1 != 0.2
> 
>         This is not true for fixed point. Addition and subtraction
> are always exact (or overflow).
> 
[... much deleted ...]

I think there is some confusion here. John is talking about *decimal* fixed point,
and Steve about *binary* fixed point, so both are correct :-)

Peter.
-- 
//
//  Peter L. Bell         pbell_at_[hidden]
//                        [phone]
//
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