It's curious that Hugs "lies"... Thanks for the answers :) .
2009/11/15 Lennart Augustsson <lenn...@augustsson.net>: > Hugs is wrong, as you can easily see by evaluating > let x = 123.35503 * 10.0 in x == read (show x) > With ghc it comes out as True and with Hugs as False. > > -- Lennart > > On Sat, Nov 14, 2009 at 9:00 PM, Abby Henríquez Tejera > <parad...@gmail.com> wrote: >> Hi. >> >> I've seen that in GHC sometimes there are little errors in some basic >> number calculations: >> >> *Prelude> 123.35503 * 10.0 >> 1233.5502999999999 >> >> *Prelude> properFraction 123.35503 >> (123,0.3550299999999993) >> >> whereas in Hugs no such errors seem to occur (that I have found, at >> least): >> >> *Hugs> 123.35503 * 10.0 >> 1233.5503 >> >> (but:) >> >> *Hugs> properFraction 123.35503 >> (123,0.355029999999999) >> >> I understand that error may (and will) happen in floating point, but >> it surprises me that they do so easily, and, above all, the difference >> between GHC and Hugs. Does someone know why does this difference >> occur? >> >> (Thanks in advance, by the way :) ). >> _______________________________________________ >> Haskell-Cafe mailing list >> Haskell-Cafe@haskell.org >> http://www.haskell.org/mailman/listinfo/haskell-cafe >> > _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
