[Haskell-cafe] Why 'round' does not just round numbers ?
magnus at therning.org
Mon Oct 27 09:43:46 EDT 2008
On Mon, Oct 27, 2008 at 9:48 AM, L.Guo <leaveye.guo at gmail.com> wrote:
> Hi all:
> I just read about definitions of Prelude , and noticing that.
> In 6.4.6 Coercions and Component Extraction, it discribes like this:
> "round x returns the nearest integer to x, the even integer if x is equidistant between two integers."
> I think this is unresonable. then try it in GHC 6.8.3.
> Prelude> round 3.5
> Prelude> round 2.5
> Is there any explanation about that ?
>  The Haskell 98 Report: Predefined Types and Classes
This behaviour is not what I expect after reading the description at
. Given that this behaviour has caused a bit of confusion I think a
change to the documention might be in order.
Magnus Therning (OpenPGP: 0xAB4DFBA4)
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