!
! Copyright (C) 2001-2018 Quantum ESPRESSO group
! This file is distributed under the terms of the
! GNU General Public License. See the file `License'
! in the root directory of the present distribution,
! or http://www.gnu.org/copyleft/gpl.txt .
!
!
!---------------------------------------------------------------
subroutine deallocate_phq
!----------------------------------------------------------------
  !! Deallocates the variables allocated by \(\texttt{allocate_phq}\).
  !
  USE noncollin_module, ONLY : m_loc
  USE becmod,           ONLY: bec_type, becp, deallocate_bec_type
  USE wavefunctions,    ONLY: evc
  USE ramanm,       ONLY: ramtns
  USE modes,        ONLY : tmq, t, npert, u, name_rap_mode, num_rap_mode
  USE efield_mod,   ONLY : zstareu, zstarue, zstarue0, zstareu0, &
                           zstarue0_rec
  USE phus,         ONLY : int1, int1_nc, int2, int2_so, &
                           int4, int4_nc, int5, int5_so, becsum_nc, &
                           becsumort, alphasum, alphasum_nc, &
                           alphap
  USE gamma_gamma,  ONLY : with_symmetry, has_equivalent, equiv_atoms, &
                           n_equiv_atoms
  USE nlcc_ph,      ONLY : drc
  USE units_ph,     ONLY : this_dvkb3_is_on_file, this_pcxpsi_is_on_file
  USE dynmat,       ONLY : dyn00, dyn_rec, dyn, w2, dyn_hub_bare
  USE el_phon,      ONLY : el_ph_mat, el_ph_mat_nc_mag
  USE freq_ph,      ONLY : polar
  USE lrus,         ONLY : int3, int3_nc, int3_paw, becp1, dpqq, dpqq_so
  USE lr_symm_base, ONLY : rtau
  USE gc_lr,        ONLY : grho, gmag, dvxc_rr,  dvxc_sr,  dvxc_ss, dvxc_s, &
                           vsgga, segni
  USE qpoint,       ONLY : eigqts, ikks, ikqs, nksq, xk_col
  USE eqv,          ONLY : dmuxc, vlocq, dpsi, dvpsi, evq
  USE control_lr,   ONLY : lgamma, nbnd_occ
  USE ldaU,         ONLY : lda_plus_u
  USE ldaU_ph,      ONLY : dnsbare_all_modes, dnsorth_cart, dnsorth, dnsbare,  &
                           wfcatomk, dwfcatomk, sdwfcatomk,         &
                           wfcatomkpq, dwfcatomkpq, sdwfcatomkpq, &
                           dvkb, vkbkpq, dvkbkpq
  USE ldaU_lr,      ONLY : swfcatomk, swfcatomkpq
  USE qpoint_aux,   ONLY : ikmks, ikmkmqs, becpt, alphapt
  USE becmod,       ONLY : deallocate_bec_type
  USE nc_mag_aux,   ONLY : int1_nc_save, deeq_nc_save
  USE Coul_cut_2D_ph, ONLY : deallocate_2d_arrays

  IMPLICIT NONE
  INTEGER :: ik, ipol

  if(allocated(ramtns)) deallocate (ramtns)
  if (lgamma) then
     if(associated(evq)) nullify(evq)
  else
     if(associated(evq)) deallocate(evq)   !why not if allocated? 
  end if

  if(allocated(dvpsi)) deallocate (dvpsi)
  if(allocated(dpsi)) deallocate ( dpsi)
  !
  if(allocated(vlocq)) deallocate (vlocq)
  if(allocated(dmuxc)) deallocate (dmuxc)
  !
  if(allocated(ikks)) deallocate (ikks)
  if(allocated(ikqs)) deallocate (ikqs)
  IF(ALLOCATED(ikmks)) DEALLOCATE(ikmks)
  IF(ALLOCATED(ikmkmqs)) DEALLOCATE(ikmkmqs)
  if(allocated(eigqts)) deallocate (eigqts)
  if(allocated(rtau)) deallocate (rtau)
  if(allocated(u)) deallocate (u)
  if(allocated(name_rap_mode)) deallocate (name_rap_mode)
  if(allocated(num_rap_mode)) deallocate (num_rap_mode)
  if(allocated(dyn)) deallocate (dyn)
  if(allocated(dyn_rec)) deallocate (dyn_rec)
  if(allocated(dyn00)) deallocate (dyn00)
  if(allocated(w2)) deallocate (w2)
  if(allocated(xk_col)) deallocate (xk_col)
  if(allocated(polar)) deallocate (polar)

  CALL deallocate_pert()

  if(allocated(npert)) deallocate (npert)
  if(allocated(zstareu)) deallocate (zstareu)
  if(allocated(zstareu0)) deallocate (zstareu0)
  if(allocated(zstarue)) deallocate (zstarue)
  if(allocated(zstarue0)) deallocate (zstarue0)
  if(allocated(zstarue0_rec)) deallocate (zstarue0_rec)

  if(allocated(int1)) deallocate (int1)
  if(allocated(int2)) deallocate (int2)
  if(allocated(int3)) deallocate (int3)
  if(allocated(int3_paw)) deallocate (int3_paw)
  if(allocated(int4)) deallocate (int4)
  if(allocated(int5)) deallocate (int5)
  if(allocated(dpqq)) deallocate (dpqq)
  if(allocated(int1_nc)) deallocate(int1_nc)
  if(allocated(int3_nc)) deallocate(int3_nc)
  if(allocated(int4_nc)) deallocate(int4_nc)
  if(allocated(becsum_nc)) deallocate(becsum_nc)
  if(allocated(becsumort)) deallocate(becsumort)
  if(allocated(alphasum_nc)) deallocate(alphasum_nc)
  if(allocated(int2_so)) deallocate(int2_so)
  if(allocated(int5_so)) deallocate(int5_so)
  if(allocated(dpqq_so)) deallocate(dpqq_so)
  IF (ALLOCATED(int1_nc_save)) DEALLOCATE (int1_nc_save)
  IF (ALLOCATED(deeq_nc_save)) DEALLOCATE (deeq_nc_save)
  if(allocated(alphasum)) deallocate (alphasum)
  if(allocated(this_dvkb3_is_on_file)) deallocate (this_dvkb3_is_on_file)

  if(allocated(this_pcxpsi_is_on_file)) deallocate (this_pcxpsi_is_on_file)
  !IF (ALLOCATED(this_pcxpsi_is_on_file_tpw)) DEALLOCATE(this_pcxpsi_is_on_file_tpw) !!! AAA Da definire chi è this_pcxpsi_is_on_file_tpw
  if(allocated(alphap)) then
     do ik=1,nksq
        do ipol=1,3
           call deallocate_bec_type ( alphap(ipol,ik) )
        enddo
     end do
     deallocate (alphap)
  endif
  if(allocated(becp1))  then
     do ik=1,size(becp1)
        call deallocate_bec_type ( becp1(ik) )
     end do
     deallocate(becp1)
  end if
  IF (ALLOCATED(alphapt)) THEN
     DO ik=1,nksq
        DO ipol=1,3
           CALL deallocate_bec_type ( alphapt(ipol,ik) )
        ENDDO
     ENDDO
     DEALLOCATE (alphapt)
  ENDIF
  IF (ALLOCATED(becpt))  THEN
     DO ik=1, nksq
        CALL deallocate_bec_type ( becpt(ik) )
     ENDDO
     DEALLOCATE(becpt)
  ENDIF
  call deallocate_bec_type ( becp )

  if(allocated(el_ph_mat)) deallocate (el_ph_mat)
  if(allocated(el_ph_mat_nc_mag)) deallocate (el_ph_mat_nc_mag)
  if(allocated(m_loc))     deallocate(m_loc)

  if(allocated(drc)) deallocate(drc)

  if(allocated(dvxc_rr)) deallocate (dvxc_rr)
  if(allocated(dvxc_sr)) deallocate (dvxc_sr)
  if(allocated(dvxc_ss)) deallocate (dvxc_ss)
  if(allocated(dvxc_s)) deallocate (dvxc_s)
  if(allocated(grho)) deallocate (grho)
  if(allocated(segni)) deallocate (segni)
  if(allocated(vsgga)) deallocate (vsgga)
  if(allocated(gmag))  deallocate (gmag)

  IF (allocated(has_equivalent))   DEALLOCATE(has_equivalent)
  IF (allocated(with_symmetry))    DEALLOCATE(with_symmetry)
  IF (allocated(n_equiv_atoms))    DEALLOCATE(n_equiv_atoms)
  IF (allocated(equiv_atoms))      DEALLOCATE(equiv_atoms)

  IF (allocated(nbnd_occ))         DEALLOCATE(nbnd_occ)

  ! DFPT+U
  IF (lda_plus_u) THEN
     !
     if(allocated(wfcatomk))          deallocate (wfcatomk)
     if(allocated(swfcatomk))         deallocate (swfcatomk)
     if(allocated(dwfcatomk))         deallocate (dwfcatomk)
     if(allocated(sdwfcatomk))        deallocate (sdwfcatomk)
     if(allocated(dvkb))              deallocate (dvkb)
     if(allocated(dnsbare))           deallocate (dnsbare)
     if(allocated(dnsbare_all_modes)) deallocate (dnsbare_all_modes)
     if(allocated(dnsorth))           deallocate (dnsorth)
     if(allocated(dnsorth_cart))      deallocate (dnsorth_cart)     
     if(allocated(dyn_hub_bare))      deallocate(dyn_hub_bare)
     !
     IF (lgamma) THEN
        if (associated(wfcatomkpq))   nullify(wfcatomkpq)
        if (associated(swfcatomkpq))  nullify(swfcatomkpq)
        if (associated(dwfcatomkpq))  nullify(dwfcatomkpq)
        if (associated(sdwfcatomkpq)) nullify(sdwfcatomkpq)
        if (associated(vkbkpq))       nullify(vkbkpq)
        if (associated(dvkbkpq))      nullify(dvkbkpq)
     ELSE
        if (associated(wfcatomkpq))   deallocate(wfcatomkpq)
        if (associated(swfcatomkpq))  deallocate(swfcatomkpq)
        if (associated(dwfcatomkpq))  deallocate(dwfcatomkpq)
        if (associated(sdwfcatomkpq)) deallocate(sdwfcatomkpq)
        if (associated(vkbkpq))       deallocate(vkbkpq)
        if (associated(dvkbkpq))      deallocate(dvkbkpq)
     ENDIF
     !
  ENDIF

  call deallocate_2d_arrays ()
 
end subroutine deallocate_phq
