[Haskell-beginners] Double Trouble

Krzysztof Skrzętnicki gtener at gmail.com
Tue Nov 10 04:43:55 EST 2009

Perhaps this module will help:



Krzysztof Skrzętnicki

On Tue, Nov 10, 2009 at 10:28, Philip Scott <haskell-beginners at foo.me.uk> wrote:
> Hi Folks,
> I'd just like to say thank you very much for your patient answers to my
> questions so far; it has been a real help on my Haskell adventure. Once I am
> become a Haskell god like y'all I will endeavour to repay the debt.
> My current puzzle is doubles. I've extensively scoured the net and found
> various mentions of the same problem, but as far as I can see no answers;
> which I can't quite believe as it must be something people do all the time.
> I need to interface my Haskell program with an existing C++ one over a TCP
> socket. I need to feed the C++ program doubles in standard 64-bit network
> order IEEE 765-1985 format, but if I serialize a double using Data.Binary I
> get something which
> has altogeather too many bytes (I read somewhere it is an int and a long for
> the exponent and mantissa).
> Any advice (or pointers to old threads, it isn't very easy to search the
> list archives) will be compensated for by a credit note for milk and cookies
> next time you are in the Cambridge, UK area :)
> - Philip
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