private void _shift(double[][] state) {
    double[] tmpState = state[0];
    state[0] = state[1];
    state[1] = state[2];
    state[2] = tmpState;
  }
private void _shift ( double [ ] [ ] state ) { double [ ] tmpState = state [ 0 ] ; state [ 0 ] = state [ 1 ] ; state [ 1 ] = state [ 2 ] ; state [ 2 ] = tmpState ; }
Shift.

@param state the state