[Haskell-cafe] Strange behavior of float literals
dbenbenn at gmail.com
Sat Apr 5 04:46:23 EDT 2008
On Sat, Apr 5, 2008 at 1:00 AM, Vladimir Reshetnikov
<v.reshetnikov at gmail.com> wrote:
> The float literal 1e-100000000000000000000000000000000000000000000 in
> GHC evaluates to 1.0, and
> 1e-999999999999999999999999999999999999999999999 evaluates to 10.0.
> Is it a bug, or a documented overflow behavior?
Sounds like a bug to me. I wasn't able to test your example in GHCi
because it started consuming all my memory. In GHCi 6.8.2 I got:
Prelude> let x = 1e-1000000
*** Exception: stack overflow
I tried compiling the following program with "ghc -O --make", and it
again started consuming all memory:
x = 1e-100000000 :: Double
main = print x
> What it the correct place to submit bug reports concerning GHC?
I'm doing Science and I'm still alive.
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