Hi all, I may be being a bit dense about this, but I am having some trouble understanding how to use FFI, especially with respect to interfacing Haskell lists/arrays to C arrays. For example, say I have the C functions void foo (double *input, double *output, int N); double bar (double *input, int N); and I want to create an FFI interface and have the resulting type signatures be
foo :: Array Int Double -> Array Int Double bar :: Array Int Double -> Double
where the bounds of the arrays are (0,N-1), and both foo and bar are pure. I read through the FFI docs, but I am still confused about how to do this. Can anyone point me to an FFI tutorial, or some examples? I have a feeling that once I see some examples using lists and arrays that things will fall into place. Thanks. -- Matthew Donadio (m.p.donadio@ieee.org)