[Haskell-cafe] 9.3 - (2 * 4.5) => 0.3000000000000007

[Tom Davie]

Prelude> import Data.Ratio
Prelude Data.Ratio> 93 % 10 - (2 * 9 % 2)
3 % 10

Floating point sucks, avoid it if you can.

Thanks

Tom Davie

On 16 Jan 2013, at 13:25, ivan dragolov <ivan at dragolov.net> wrote:

> 
> 9.3 - (2 * 4.5) => 0.3000000000000007
> 
> I expected 0.3
> 
> ?
> 
> -- 
> Иван Драголов
> dragolov.net
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