[Haskell-cafe] Directed rounding in haskell ?

Sterling Clover s.clover at gmail.com
Tue Apr 8 01:07:58 UTC 2014

You can set the rounding mode directly with ieee-utils.

Apparently it doesn't compile anymore, so someone has uploaded a 
temporary replacement: 

The primary maintainer of the original package left the haskell 
community some time ago. (I contributed some additional code many years 
ago). Michal Konecny -- would you be interested in taking over 


On 4/7/14, 10:12 AM, Dominik Peteler wrote:
> Hello list,
> I'm going to implement an interval arithmetic library (following the IEEE P1788) in Haskell and for
> that I need support for directed rounding to the nearest floating point
> number. I had a quick look at the Decimal package which comes with the
> `roundTo` function for rounding to a specified number of decimal places
> but it doesn't provide directed rounding.
> Is there way to get directed rounding to to the nearest float (maybe
> even with machine floats) ?
> I'm also aware of the AERN-* packages but they seem to be unmaintained. At
> least there is no version which builds with the current GHC. Does
> anybody know something about that ?
> Regards
> dominik
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