Error using Matlab HDL Coder

Hi, Can some one please help out.Thanks. I am trying to convert below code to VHDL using HDL Coder but getting error. The HDL Coder Block file is also attached .Please can you have a look on it and see whats the mistake in block diagram.

x1=[1 2 3 4 5 6 7 8 9];
x2=[3 4 5 6 7 8 9 2 1];
n=length(x1);
xc=zeros(2*n-1,1);
for i=1:2*n-1
  if(i>n)
      j1=1;
      k1=2*n-i;
      j2=i-n+1;
      k2=n;
  else
      j1=n-i+1;
      k1=n;
      j2=1;
      k2=i;
  end
  xc(i)=sum(conj(x1(j1:k1)).*x2(j2:k2));
end
xc=flipud(xc);

Error:

Cannot connect to model 'prc4'; please try Update Diagram (Ctrl-D).

Error due to multiple causes.

Errors occurred during parsing of MATLAB function 'MATLAB Function'(#24)

Error in port widths or dimensions. Output port 1 of 'prc4/MATLAB Function/u' is a one dimensional vector with 1 elements.

Can some please help me out what could be the reason of this error.

Answer 1

[Juan Valverde]

Hello,

Re-Check data types and ports. Use fix point and be sure that all calculations can be represented by the data types you selected for the model.