call fortran with integer arrays

[Muhali]

I have a fortran function that is slightly different from  this example
<https://www.gnu.org/software/octave/doc/interpreter/Calling-External-Code-from-Oct_002dFiles.html>
  

https://www.gnu.org/software/octave/doc/interpreter/Calling-External-Code-from-Oct_002dFiles.html

In my case n is an integer array instead of a simple integer. - I guess I
need the equivalent for the double array a, as here:

   NDArray a = args(0).array_value ();
   double *av = a.fortran_vec ();

How do I do this?

M.




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