[Haskell-cafe] money type ?

Simon Michael simon at joyful.com
Thu Jul 12 03:42:46 EDT 2007

Good day all,

my budding ledger program could not balance transactions exactly because of 
rounding error with Double. I *think* I got it working better with Rational 
(it was late). Another suggestion from #haskell was to multiply all money 
by 100. I'm tracking multiple currencies/commodities with varying precision 
so this gets a bit more complicated.

Is there a type or library out there that's good for representing money and 
other quantities while avoiding rounding errors  ?

Best - Simon

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