[Haskell-cafe] Re: Complex C99 type in Foreign

Maurí­cio briqueabraque at yahoo.com
Sun Feb 1 18:50:56 EST 2009

>> Are there plans to include C99 'complex' type
>> in Foreign, maybe as CFloatComplex, CDoubleComplex
>> and CLongDoubleComplex? This seems an easy addition
>> to the standard and would allow binding of a few
>> interesting libraries, like GSL.
> A separate library for new types to add to Foreign would be the easiest
> way forward. Just put the foreign-c99 package on Hackage?

As far as I know, this is not possible. (I tried for
a long time to do that, actually, until I reallized
it could not be done.)

If it's not true, i.e., I could actually have some
arbitrary sized parameter as argument to a function
or as a return value (and not its pointer), what
did I saw wrong? I understand only Foreign.C.C*
types or forall a. => Foreign.Ptr.Ptr a can be used
like that.


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