Hello! I am learning ocaml during the past weeks, and now I would like to understand the use of ctypes creating by myself the binding (not using dune stanza at this moment). In particular, to use a C code to access specific information in binary files, but I am don’t know how to fill an OCaml array…

I’m learning myself, but I believe you will need to allocate memory for the second argument of the oget_array_int, and then you will need to copy that into an OCaml array. Don’t know if if that can be done directly. let getArray nfvar n m = let buff = allocate_n int ~count: n*m in let ret …

Using ctypes to bind C functions returning pointers to get arrays

Learning

RChG August 18, 2023, 12:17pm 3

Thanks!

I think this is working with Array.int (n*m) (fun i -> !@(buff +!@ i) and probably for the several dimensions and I may simply reshape.

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Using ctypes to bind C functions returning pointers to get arrays

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