Re: [boost] A pure C/C++ question

From: Victor A. Wagner, Jr. (vawjr_at_[hidden])
Date: 2002-08-21 12:43:56

At Wednesday 2002/08/21 04:43, you wrote:
>From: "Noel Yap" <yap_noel_at_[hidden]>
> > > > to do the job.  IMHO, if I understand the problem
> > > > correctly, treating:
> > > >
> > > >     x = y*z/u;
> > > >
> > > > differently from:
> > > >
> > > >     x = y*z;
> > > >     x /= u;
> > > >
> > > > would complicate the language.
> > >
> > > Those are already different when x/y/z are floating
> > > point.
> >
> > Please forgive this question: How does the language
> > treat the two differently for floating point?
>
>In "x = y * z / u;", y * z is allowed to live in a FP register that has
>better precision than 'x'.

which is precisely what the OP was complaining that the language does NOT 
do for int (and it's relatives)

>In "x = y * z; x /= u;" y * z is required to be truncated to x's precision
>first.
>
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Victor A. Wagner Jr.      http://rudbek.com
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