[Haskell-beginners] High precision doubles
Rafael Gustavo da Cunha Pereira Pinto
RafaelGCPP.Linux at gmail.com
Fri Jun 26 06:52:03 EDT 2009
Point noted, it doesn't seem to be the case for the original question, as he
is doing some square roots.
On Fri, Jun 26, 2009 at 04:00, <ajb at spamcop.net> wrote:
> G'day all.
>
> Quoting Rafael Gustavo da Cunha Pereira Pinto <RafaelGCPP.Linux at gmail.com
> >:
>
> I am reading this and still don't understand what is the question. You
>> should never operate two floating point numbers expecting to result zero.
>> Period.
>>
>
> WARNING: Advanced material follows.
>
> A 32-bit integer fits losslessly in the mantissa of a Double. Any of
> the basic integer operations which work correctly on 32-bit integers
> must also work correctly when that integer is stored in a Double. You
> are allowed to assume this.
>
> Cheers,
> Andrew Bromage
>
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--
Rafael Gustavo da Cunha Pereira Pinto
Electronic Engineer, MSc.
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