AW: [Haskell] Hugs Nov2003 X Nov2002

[Iavor S. Diatchki]

hi,
i believe you should use
fromIntegral :: (Integral a, Num b) => a -> b

Since Int is in the Integral class, and Float is in the Num class
this should do exactly the job you need.

For the other functions that were not working --- they were moved to
the Char module, so you need to add "import Char" at the top of your
program.



Markus.Schnell at infineon.com wrote:

> try
>  
> fromInt = fromInteger . toInteger

this does not seem like a good idea, as you start with an Int,
then convert it to an Integer, and then you make a Float out of that.
seems like a waste.

hope this helps
-iavor


>  
> Markus
>  
>
> -- 
> Markus Schnell
>
>     -----Ursprüngliche Nachricht-----
>     *Von:* haskell-bounces at haskell.org
>     [mailto:haskell-bounces at haskell.org] *Im Auftrag von *Stenio
>     *Gesendet:* Dienstag, 16. März 2004 10:29
>     *An:* Ketil Malde
>     *Cc:* haskell at haskell.org
>     *Betreff:* Re: [Haskell] Hugs Nov2003 X Nov2002
>
>     fromInteger works, but it converts from Integer to Float. In my
>     script, I need fromInt because it converts from Int to Float.
>
>     Example:
>
>     average :: Int -> Float
>     average n = fromInt ( sum n ) :: Float / fromInt n :: Float
>
>     It works only in Hugs November 2002
>
>     Stenio.
>
>         --------- Mensagem Original --------
>         De: "Ketil Malde" <ketil+haskell at ii.uib.no>
>         Para: "Stenio" <stenio at uesb.br>
>         Cópia: haskell at haskell.org
>         Assunto: Re: [Haskell] Hugs Nov2003 X Nov2002
>         Data: 16/03/04 12:07
>
>
>         "Stenio" <stenio at uesb.br> writes:
>
>         > I was using Hugs November 2002 and the function fromInt
>         works fine,
>         > but in the version November 2003 the same function doesn´t work.
>
>         I'm too lazy to check the standard, so I'll just assume Hugs was
>         wrong. I think the solution is to use "fromIntegral" instead. GHCi
>         also has "fromInteger", although I'm not quite sure why we
>         need this
>         in addition to "fromIntegral"? (Possibly because it is a member of
>         Num, and it would break too much code to remove it)
>
>         -kzm
>         --
>         If I haven't seen further, it is by standing in the footprints
>         of giants
>
>
>
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