Matlab Coder input arguments? (variable array size)

Hello! I am trying to export some code done in Matlab to a C# project via the matlab Coder and compiling it into a .dll file. It works nicely for handling arrays of a set size but when I choose the input argument in my Entry-Point Files to be an array of variable size "Up to 4 (:4)" something goes wrong.

I have previously tested returning a set sized array "Exactly 4 (4)" which works fine.

Here is the Matlab code, quite simple:

function [ out ] = divideArray( in )
    out = in / 2;
end

Here is the extern function that is generated in the divideArray.h file:

extern void divideArray(const real_T in_data[4], const int32_T in_size[2], real_T out_data[4], int32_T out_size[2]);

Here is the C# code, first the DLL import declaration:

          private static extern void divideArray( [In] double[] arrIn, 
                                                  [In] int[] inSize, 
                                                  [Out] double[] arrOut, 
                                                  [Out] int[] outSize);

And then the C# main funtion:

          static void Main(string[] args)
          {
              double[] foo = new double[4] { 1, 4, 9, 43 };
              double[] bar = new double[4];
              int[] inSize = new int[2] { 1, 4 };
              int[] outSize = new int[2];

              divideArray(foo, inSize, bar, outSize);

              Console.WriteLine("\ninSize:");
              Console.WriteLine("Length: " + inSize.Length);
              Console.WriteLine("[0]: " + inSize.GetValue(0));
              Console.WriteLine("[1]: " + inSize.GetValue(1));

              Console.WriteLine("\noutSize:");
              Console.WriteLine("Length: " + outSize.Length);

              Console.WriteLine("\nbar values:");
              for (int i = 0; i < 4; i++)
              {
                  Console.Write(foo.GetValue(i) + " ");
              }

              Console.WriteLine("\n\nDone.");
              Console.ReadKey();
          }

Here is the console output I get:

inSize:
Length: 2
[0]: 0
[1]: 1071644672

outSize:
Length: 0

bar values:
0 0 0 0

Done.

So not quite sure what happens, it works perfectly fine when the input array size is set to a constant but when it is variable the input size is changed and no output is made. I have tested a lot of different inSize values in case the array indexing was Matlab or C but no difference. And again, it works with no problems when the array size is set to a constant :)

Thanks in advance, Viktor

[Ryan Livingston]

My knowledge of C# is limited. Do you know how it is that inSize is being modified from {1,4} to the values shown? Does inSize have those values before the call to divideArray?

Also, the values printed seem to be from foo rather than bar:

Console.Write(foo.GetValue(i) + " ");

Do you know how the value of foo would have been modified? My suggestion would be to see if the proper values are even making it to divideArray.