Hi,
I tried googling and searching the haskellwiki about this but wasn't
lucky enough. My question is: is there a way to send struct arguments
to C functions via the FFI or do I need to create a C wrapper? I guess
there isn't, and while I can live without it, I'd like to leave no
doubt.
Details:
I have something like
====================
typedef struct vect {
float x,y;
} vect;
void func(vect v);
=====================
on the C side and
====================
-- Please disregard float /= Float, just an example :)
data Vector = Vector Float Float
instance Storable Vector where
...
====================
on the Haskell side, and I want to call func with Vector as argument.
Now, Vector isn't a basic FFI type, although it implements Storable.
So does that mean that I need to create something like
====================
void funcWrapper(vect *v) {
func(*v);
}
====================
and then allocate some temporary memory on the Haskell side to use func?
Cheers!
--
Felipe.
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