On 10 Sep, Will Partain wrote:
> [EMAIL PROTECTED] writes:
>
>> .... As far as I know, none of the existing implementations
>> takes the speed of Integer seriously (ghc certainly doesn't), ...
>
> The GHC implementation has always been a thin wrapper on top
> of the GMP (GNU multi-precision arithmetic) library. So,
> while we may not have taken Integer performance too
> seriously, we made a point of hanging around with people who
> did. (Hey, Lennart made much the same choice, and he's not
> one to give away speed for nothing :-)
The question is of performance for Int sized things in Integer, so the
fact that you call a good library isn't relevant; what's important is
what you do when you don't _need_ to use GMP to get the answer. My
guess is that most of the real cost of doing Int sized arithmetic in
Integers is the cost of detecting overflow.
--
Jon Fairbairn [EMAIL PROTECTED]
18 Kimberley Road [EMAIL PROTECTED]
Cambridge CB4 1HH +44 1223 570179 (pm only, please)
