.mo file

model External_Array

/*This code is very simple code for testing external c function with array*/

  function FuncArray                

    input Real[:] a;                

    output Real[2] b;    

    external b=ExternalC_array(a,2) annotation(Library="functionC.o",Include = "#include \"ExternalC.h\"");                

  end FuncArray;

          

    Real[2] x={1,2};                

    Real[2] y;                

  equation                

    y = FuncArray(x);        

end External_Array;





.c file

/* ExternalC.c */

double ExternalC_array(double *x, int n)

{

    int i;

    for(i = 0; i < n; i++){

        x[i] = x[i] / 2;

    }

    return x, n;

}



.h file

/* ExternalC.h */

double ExternalC_array(const double*, int);

[D:/.../External_Array.mo:2:3-8:16:writable] Error: The lhs (result) of the external function declaration has array type (Real[2]), but this is not allowed in the specification. You need to pass it as an input to the function (preferably also with a size()-expression to avoid out-of-bounds errors in the external call).

[D:/.../External_Array.mo:17:5-17:21:writable] Error: Class FuncArray not found in scope External_Array (looking for a function or record).

Error: Error occurred while flattening model External_Array