func void test(matrix a, matrix b) {
  matrix c <3, 3> = a + b;
  print(a);
  print(c);
}

func int main() {
  matrix a <3, 3>;
  matrix b <3, 3>;
  a = [1.1, 2.1, 3.1; 1.0, 2.0, 3.0; 4.1, 4.2, 4.3];
  b = [1.1, 2.1, 3.1; 1.0, 2.0, 3.0; 4.1, 4.2, 4.3];
  test(a, b);
  return 0; 
}