[Haskell-cafe] Typing problems with basic arithmetic - help!
mm3 at zepler.net
Fri Sep 23 15:10:55 EDT 2005
Thanks for this: All I have to do now is fix the fact that my maths is stupidly screwed!
On Fri, Sep 23, 2005 at 02:23:10PM -0400, J. Garrett Morris wrote:
> Haskell doesn't do automatic numeric conversion for you - you need to
> use fromIntegral to go from an integral type (like 2) to a floating
> point type (as you'd need for division) and you can use round or trunc
> to go the other direction. There's similarly a fromRational function
> to convert from rational numbers to just about anything else you'd
> need. A couple of applications of those functions - probably mainly
> around your divisions - should fix things up.
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