[Haskell-cafe] Int vs Integer

[Jared Updike]

Int is for bounded values -2**32 to 2**32 (I think... maybe 2**-31 and
2**31 or less if it's boxed?) based on the underlying machine
representation. Integer is unbounded (arbitrary precision, i.e.
7489571948579148758174534 is a valid Integer). Double is for floating
point values corresponding to C doubles, in hardware (on 32 bit
machines, 64 bit entities) and Floats are half that precision, i.e. 32
bits on 32 bit machines, corresponding to C floats.

see  http://www.haskell.org/onlinereport/basic.html#sect6.3 and
http://www.haskell.org/onlinereport/basic.html#sect6.4 for more info.

 Jared.

On 12/18/05, Daniel Carrera <daniel.carrera at zmsl.com> wrote:
> Hello all,
>
> I found a good Haskell tutorial (second link on the Tutorials column)
> (now that I know how to run the programs in it). I have a question.
> What's the difference between the types Int and Integer? Likewise,
> what's the difference between the types Float and Double? Are those just
> synonims?
>
> Thanks for the help.
>
> Cheers,
> Daniel.
> --
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