On Mon, Feb 28, 2005 at 10:59:32PM +0000, Ganesh Sittampalam wrote:
On Mon, 28 Feb 2005, Remi Turk wrote:
On Mon, Feb 28, 2005 at 02:55:56PM +0000, Ganesh Sittampalam wrote:
Prelude> :m +Data.Bits Prelude Data.Bits> 18446658724119492593 `shiftL` (-3586885994363551744) :: Integer
and calculating, in your case, 2^3586885994363551744 is not something your computer is going to like... as it's probably a number which doesn't fit in our universe :)
Hmm, good point. I hadn't thought about the fact that the number of digits in the answer would be rather large... Actually, the final answer will be 0: It's only the intermediate value that gets ridiculously large.
Still, a segfault might point at a bug, which I unfortunately won't be able to say much about. (Due to lack of knowledge & information.)
My googling suggests that gmp is prone to segfaulting when things get too large for it, so I'll just chalk it up to that.
I apologise for thinking this was a bug :-)
No need to apologize. Segfaults _are_ IMHO almost always bugs. And in this case too, though the fault isn't GHCs. Groeten, Remi
Cheers,
Ganesh
-- Nobody can be exactly like me. Even I have trouble doing it.