[Haskell-cafe] How to round off frational number?

[Sara Kenedy]

Thanks a lot. That's what I need.

On 9/8/06, J. Garrett Morris <trevion at gmail.com> wrote:
> I've always used:
>
> roundn n f = fromIntegral (round (f * 10 ^ n)) / 10 ^ n
>
> I may have missed some bugs or subtleties of floating point numbers, though.
>
>  /g
>
> On 9/8/06, Sara Kenedy <sarakenedy at gmail.com> wrote:
> > Hello all,
> >
> > I try to find some functions in Haskell library to deal with numeric
> > such that the result in the following format (but I did not find)
> > For example,
> > >1/3
> > 0.33
> > >1/6
> > 0.17
> > >8/3
> > 2.67
> > >9/3
> > 3.00
> >
> > It seems a so "baby" question, but I really did not find the answer
> > after trying on that for some hours.
> > Thanks for any help.
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>
>
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>