def _set_c_dipole_dipole_q0(self): import phonopy._phonopy as phonoc pos = self._pcell.get_positions() self._dd_q0 = np.zeros((len(pos), 3, 3), dtype=self._dtype_complex, order='C') phonoc.dipole_dipole_q0(self._dd_q0.view(dtype='double'), self._G_list, self._born, self._dielectric, np.array(pos, dtype='double', order='C'), self._Lambda, self._symprec)