calcAreaSum.c modified--not working

 int togo, size;
   int size1=rows*cols;
   for(i=0; i<size1; i=i+8)
    {
       togo = size1 - i;
       size = (togo > 8) ? 8 : togo;
       for(j=0; j<size; j++)
         {
            asubsref(a1,j+nave_half) = asubsref(src,i+j);
          }
      }
    a1sum = 0;
    int size2=rows*nave;
    for(i=0; i<size2; i=i+8)
     {
        togo = size2 - i;
        size = (togo > 8) ? 8 : togo;
        for(k=0; k<size; k++)
           {
            a1sum += asubsref(a1,k);
            }
      }
   int size3=rows*cols;
   for(i=0; i<size3; i=i+8)
   {
        togo = size3 - i;
        size = (togo > 8) ? 8 : togo;
        for(j=0; j<size; j++)
        {
            asubsref(ret,i+j) = a1sum;
            a1sum += asubsref(a1,j+nave) - asubsref(a1,j);
        }
    }