This may be of interest if you want full-precision decimals: http://www.haskell.org/haskellwiki/Libraries_and_tools/Mathematics#Decimal_numbers
On Wed, Jan 16, 2013 at 7:30 AM, Patrick Mylund Nielsen < [email protected]> wrote: > Fun with floating point! > > # ghci > GHCi, version 7.4.2: http://www.haskell.org/ghc/ :? for help > Loading package ghc-prim ... linking ... done. > Loading package integer-gmp ... linking ... done. > Loading package base ... linking ... done. > Prelude> 9223372036854775807.0 == 9223372036854775808 > True > > http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems > > > > On Wed, Jan 16, 2013 at 7:25 AM, ivan dragolov <[email protected]> wrote: > >> >> 9.3 - (2 * 4.5) => 0.3000000000000007 >> >> I expected 0.3 >> >> ? >> >> -- >> Иван Драголов >> dragolov.net >> >> GSM: 0888 63 19 46 >> GSM за SMS: 0878 82 83 93 >> facebook.com/ivan.dragolov >> twitter.com/dragolov >> >> _______________________________________________ >> Haskell-Cafe mailing list >> [email protected] >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> >> >
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