On Sat, Feb 8, 2014 at 3:39 PM, Nicolas Trangez <nicolas@incubaid.com> wrote:

Note there's some existing support for this in `base`:

On Sat, 2014-02-08 at 15:06 -0500, Omari Norman wrote:
> but for a short explanation, go into ghci and type:
>
> print $ 0.1 + 0.1 + 0.1

ë print $ (0.1 + 0.1 + 0.1 :: Double)
0.30000000000000004

ë :m + Data.Fixed

Key word there is "Fixed"; deka supports floating point with up to 34 digits of precision but, yes, Data.Fixed does solve some of this problem.