
*
* $Id: inner_loop.F 25926 2014-07-21 03:13:15Z bylaska $
*

*  ************************************************************
*  *                MPI cpsd routine                          *
*  *                                                          *
*  *  This is a developing cpsdv3 parallel code wrtten in     *
*  *  Fortran and MPI.                                        *
*  *                                                          *
*  *    + mpl message passing library used                    *
*  *                                                          *
*  *    + ngp is used instead of nfft in this proceudure      *
*  *                                                          *
*  *    + error checking is based on aimd.h parameters        *
*  *      then control file                                   *
*  ************************************************************
  
      subroutine inner_loop(ispin,ne,
     >                      npack1,nfft3d,nemax,
     >                      psi1,psi2,dn,
     >                      it_in,E,deltae,deltac,deltar,
     >                      hml,lmd,
     >                      psi_r,Hpsi,
     >                      fractional,occ1,occ2)
      implicit none
      integer    ispin,ne(2)
      integer    npack1,nfft3d,nemax
      complex*16 psi1(npack1,nemax)
      complex*16 psi2(npack1,nemax)
      real*8     dn(2*nfft3d,2)
      integer    it_in
      real*8     E(*)
      real*8     deltae,deltac,deltar
      real*8     hml(*),lmd(*)

*     **** very big workspace variables ****
      real*8     psi_r(2*nfft3d,nemax)
      complex*16 Hpsi(npack1,nemax)

      logical fractional
      real*8 occ1(*),occ2(*)


#include "mafdecls.fh"
#include "errquit.fh"
cccccccc#include "frac_occ.fh"

*     **** local variables ****
      logical move,sic,hfx
      integer n2ft3d,np_i,np_j,np
      integer i,n,n1(2),n2(2),it,ms,ierr
      integer nx,ny,nz
      integer gga
      real*8  sum,Eold,eorbit,eion,ehartr,eke,elocal,enlocal
      real*8  exc,exc2,pxc,pxc2,dte,scal1,scal2,dv,dt
      real*8  ehsic,phsic,exsic,pxsic,ehfx,phfx
      real*8  deltamm
      real*8  e_lj, e_q, e_spring
      real*8  ehartree_atom,ecmp_cmp,ecmp_pw,exc_atom,pxc_atom
      !real*8 e_ionmm,e_qmmm,e_mmmm,e_pol,e_vib,e_cav



*     **** MA local variables ****
      logical value,field_exist
*     real*8     tmp_L(8*nemax*nemax)
*     complex*16 tmp1(nfft3d)
*     complex*16 tmp2(nfft3d)
c     complex*16  vl(nfft3d)
c     complex*16  vc(nfft3d)
c     complex*16 dng(nfft3d)
c     real*8     xcp(2*nfft3d,2)
c     real*8     xce(2*nfft3d,2)
c     real*8     fion(3,natmx)
      integer tmp_L(2)
      integer tmp1(2),tmp2(2)
      integer vl(2),vc(2),dng(2)
      integer vlr_l(2),rho(2),r_grid(2)
      integer v_field(2)
      integer xcp(2),xce(2),dnall(2)
      integer natmx,fion(2),ftest(2)
      integer sumi(2)
      integer npack0

*     ***** external functions ****
      logical  control_move,psp_semicore,psp_pawexist
      logical  pspw_SIC,pspw_SIC_relaxed
      logical  pspw_HFX,pspw_HFX_relaxed
      integer  ion_nion,control_gga
      real*8   control_time_step,control_fake_mass,ion_dti
      real*8   lattice_omega,coulomb_e,ewald_e
      external control_move,psp_semicore,psp_pawexist
      external pspw_SIC,pspw_SIC_relaxed
      external pspw_HFX,pspw_HFX_relaxed
      external ion_nion,control_gga
      external control_time_step,control_fake_mass,ion_dti
      external lattice_omega,coulomb_e,ewald_e
      integer  control_version
      external control_version
      real*8   ion_ion_e,E_vnonlocal
      external ion_ion_e,E_vnonlocal

      double precision Dneall_m_trace
      external         Dneall_m_trace
      logical  Dneall_m_push_get_block,Dneall_m_pop_stack
      external Dneall_m_push_get_block,Dneall_m_pop_stack

*     ***** QM/MM external functions ****
      logical  pspw_charge_found,pspw_qmmm_found
      real*8   pspw_qmmm_LJ_E,pspw_qmmm_Q_E,pspw_qmmm_spring_E
      external pspw_charge_found,pspw_qmmm_found
      external pspw_qmmm_LJ_E,pspw_qmmm_Q_E,pspw_qmmm_spring_E

      logical  psp_U_psputerm,meta_found
      external psp_U_psputerm,meta_found
      logical  nwpw_meta_gga_on,ion_disp_on
      external nwpw_meta_gga_on,ion_disp_on
      real*8   nwpw_meta_gga_pxc,ion_disp_energy
      external nwpw_meta_gga_pxc,ion_disp_energy

*     **** paw external functions ****
      real*8   psp_kinetic_atom,psp_kinetic_core,psp_valence_core_atom
      real*8   psp_ncmp_vloc,psp_vloc_atom,psp_ion_core
      real*8   psp_hartree_atom,psp_hartree_cmp_cmp,psp_hartree_cmp_pw
      external psp_kinetic_atom,psp_kinetic_core,psp_valence_core_atom
      external psp_ncmp_vloc,psp_vloc_atom,psp_ion_core
      external psp_hartree_atom,psp_hartree_cmp_cmp,psp_hartree_cmp_pw




      call Pack_npack(0,npack0)
      n2ft3d = 2*nfft3d
      deltamm = 0.0d0

      field_exist = pspw_charge_found()
      sic        = pspw_SIC()
      hfx        = pspw_HFX()
      gga = control_gga()

      call nwpw_timing_start(12)
*     **** allocate MA local variables ****
      value = Dneall_m_push_get_block(1,8,tmp_L)
      value = value.and.
     >        MA_push_get(mt_dcpl,(nfft3d),'tmp1',tmp1(2),tmp1(1))
      value = value.and.
     >        MA_push_get(mt_dcpl,(nfft3d),'tmp2',tmp2(2),tmp2(1))

      if (control_version().eq.3) then
       value = value.and.
     >        MA_push_get(mt_dcpl,(npack0),'vc',  vc(2),  vc(1))
      end if

      if (control_version().eq.4) then
       value = value.and.
     >        MA_push_get(mt_dbl,(n2ft3d),'vc',vc(2),vc(1))
       value = value.and.
     >        MA_push_get(mt_dbl,(n2ft3d),'vlr_l',vlr_l(2),vlr_l(1))
      end if

      if ((field_exist).or.(control_version().eq.4)) then
       value = value.and.
     >    MA_push_get(mt_dbl,(3*n2ft3d),'r_grid',r_grid(2),r_grid(1))
      end if

       value = value.and.
     >  MA_push_get(mt_dbl,(n2ft3d),'v_field',v_field(2),v_field(1))

      value = value.and.
     >        MA_push_get(mt_dcpl,(npack0),'vloc', vl(2), vl(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(n2ft3d),'rho',rho(2),rho(1))
      value = value.and.
     >        MA_push_get(mt_dcpl,(npack0),'dng',dng(2), dng(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(4*nfft3d),'xcp',xcp(2), xcp(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(4*nfft3d),'xce',xce(2), xce(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(4*nfft3d),'dnall',dnall(2),dnall(1))
      natmx = ion_nion()
      value = value.and.
     >        MA_push_get(mt_dbl,(3*natmx),'fion',fion(2),fion(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(3*natmx),'ftest',ftest(2),ftest(1))
      value = value.and.
     >        MA_push_get(mt_dbl,(nemax),'sumi',sumi(2),sumi(1))
      if (.not. value) call errquit('out of stack memory',0, MA_ERR)
      call dcopy(4*nfft3d,0.0d0,0,dbl_mb(dnall(1)),1)
      call dcopy(4*nfft3d,0.0d0,0,dbl_mb(xcp(1)),1)
      call dcopy(4*nfft3d,0.0d0,0,dbl_mb(xce(1)),1)

      call nwpw_timing_end(12)
     
      call D3dB_nx(1,nx)
      call D3dB_ny(1,ny)
      call D3dB_nz(1,nz)
      move = control_move()
      

      n1(1) = 1
      n2(1) = ne(1)
      n1(2) = ne(1) + 1
      n2(2) = ne(1) + ne(2)

      dt = control_time_step()
      dte = dt/dsqrt(control_fake_mass())
      scal1 = 1.0d0/dble(nx*ny*nz)
      scal2 = 1.0d0/lattice_omega()
      dv    = scal1*lattice_omega()

      if ((control_version().eq.4).or.(field_exist))
     >   call lattice_r_grid(dbl_mb(r_grid(1)))

*     ******************************************
*     ****                                  ****
*     ****   Start of steepest descent loop ****
*     ****                                  ****
*     ******************************************
      do it=1,it_in
        call dcopy(2*npack1*nemax,psi2,1,psi1,1)
        if (move) call ion_shift()

*       ********************************
*       **** generate phaze factors ****
*       ********************************
        call phafac()
        if (control_version().eq.3) call ewald_phafac()
        call nwpw_timing_start(11)

*       *******************;
*       **** get psi_r ****
*       *******************
c        do n=n1(1),n2(ispin)
c           call Pack_c_Copy(1,psi1(1,n),psi_r(1,n))
c           call Pack_c_unpack(1,psi_r(1,n))
c           call D3dB_cr_fft3b(1,psi_r(1,n))
c           call D3dB_r_Zero_Ends(1,psi_r(1,n))
c        end do
        do n=n1(1),n2(ispin)
           call Pack_c_Copy(1,psi1(1,n),psi_r(1,n))
        end do
        call Grsm_gh_fftb(nfft3d,n2(ispin),psi_r)
        do n=n1(1),n2(ispin)
           call D3dB_r_Zero_Ends(1,psi_r(1,n))
        end do

        call nwpw_meta_gga_gen_tau(ispin,ne,psi1)


*       *********************
*       **** generate dn ****
*       *********************
        call dcopy(ispin*n2ft3d,0.0d0,0,dn,1)
        if (fractional) then
          do ms=1,ispin
             do n=n1(ms),n2(ms)
                do i=1,n2ft3d
                   dn(i,ms) = dn(i,ms) 
     >                      + scal2*(psi_r(i,n)**2)
     >                       *occ1(n)
                end do
             end do
             call D3dB_r_Zero_Ends(1,dn(1,ms))
             call D1dB_Vector_SumAll(n2ft3d,dn(1,ms))
          end do
        else
          do ms=1,ispin
             do n=n1(ms),n2(ms)
                do i=1,n2ft3d
                   dn(i,ms) = dn(i,ms) + scal2*(psi_r(i,n)**2)
                end do
             end do
             call D3dB_r_Zero_Ends(1,dn(1,ms))
             call D1dB_Vector_SumAll(n2ft3d,dn(1,ms))
          end do
        end if

*       **********************
*       **** generate dng ****
*       **********************
        call D3dB_rr_Sum(1,dn(1,1),dn(1,ispin),dbl_mb(rho(1)))
        call D3dB_r_SMul(1,scal1,dbl_mb(rho(1)),dcpl_mb(tmp1(1)))
        call D3dB_rc_fft3f(1,dcpl_mb(tmp1(1)))
c        call mask_C(0,dcpl_mb(dng(1)))
        call Pack_c_pack(0,dcpl_mb(tmp1(1)))
        call Pack_c_Copy(0,dcpl_mb(tmp1(1)),dcpl_mb(dng(1)))



*       ********************************************************
*       **** generate dnall - used for semicore corrections ****
*       ********************************************************
        if (psp_semicore(0)) then
           if (move .or. (it.eq.1)) call semicore_density_update()
           call semicore_density(dcpl_mb(tmp1(1)))
           call D3dB_r_SMul1(1,0.5d0,dcpl_mb(tmp1(1)))
        else
           call dcopy(n2ft3d,0.0d0,0,dcpl_mb(tmp1(1)),1)
        end if
        do ms=1,ispin
          call D3dB_rr_Sum(1,dn(1,ms),
     >                     dcpl_mb(tmp1(1)),
     >                     dbl_mb(dnall(1) +(ms-1)*n2ft3d))
        end do
        
        call nwpw_timing_end(11)

*       **************************
*       **** update ncmp*Vloc ****
*       **************************
        if (psp_pawexist().and.(move .or. (it.eq.1)))
     >     call psp_dE_ncmp_vloc_Qlm(ispin)


*       *****************************************
*       **** generate local pseudopotential  ****
*       **** and also get force if move true ****
*       *****************************************
 
        call v_local(dcpl_mb(vl(1)),
     >               move,
     >               dcpl_mb(dng(1)),
     >               dbl_mb(fion(1)))


*       *** long-range psp for charge systems ***
        if (control_version().eq.4) then
          call v_lr_local(dbl_mb(r_grid(1)),
     >                    dbl_mb(vlr_l(1)))
          if (move) then
             call grad_v_lr_local(dbl_mb(r_grid(1)),
     >                            dbl_mb(rho(1)),
     >                            dbl_mb(fion(1)))
          end if
        end if


*       ************************************
*       **** generate coulomb potential ****
*       ************************************
        if (control_version().eq.3) 
     >     call coulomb_v(dcpl_mb(dng(1)),dcpl_mb(vc(1)))

        if (control_version().eq.4) 
     >     call coulomb2_v(dbl_mb(rho(1)),dbl_mb(vc(1)))

*       *************************************************
*       **** generate exchange-correlation potential ****
*       *************************************************
        call v_bwexc_all_tmp1(gga,n2ft3d,ispin,
     >                        dbl_mb(dnall(1)),
     >                        dbl_mb(xcp(1)),
     >                        dbl_mb(xce(1)),
     >                        dcpl_mb(tmp1(1)))

     
*       *******************************************
*       ***** generate other real-space fields ****
*       *******************************************
        if (field_exist) then

           call dcopy(n2ft3d,0.0d0,0,dbl_mb(v_field(1)),1)


*          **** generate charge potential ****
           if (pspw_charge_found()) then
              call pspw_charge_Generate_V(n2ft3d,
     >                                    dbl_mb(r_grid(1)),
     >                                    dbl_mb(v_field(1)))
           end if
        end if

        call nwpw_timing_start(13)



*       ******************
*       **** get Hpsi ****
*       ******************
        if (control_version().eq.3) 
     >     call psi_H(ispin,ne,psi1,psi_r,
     >             dcpl_mb(vl(1)),
     >             dbl_mb(v_field(1)),field_exist,
     >             dcpl_mb(vc(1)),dbl_mb(xcp(1)),Hpsi,
     >             move,dbl_mb(fion(1)),fractional,occ1)

        if (control_version().eq.4) 
     >     call psi_Hv4(ispin,ne,psi1,psi_r,
     >             dcpl_mb(vl(1)),dbl_mb(vlr_l(1)),
     >             dbl_mb(v_field(1)),field_exist,
     >             dbl_mb(vc(1)),dbl_mb(xcp(1)),Hpsi,
     >             move,dbl_mb(fion(1)),fractional,occ1)

        
*       ************************************
*       **** do a steepest descent step ****
*       ************************************
        do n=1,n2(ispin)
          call Pack_c_SMul(1,dte,Hpsi(1,n),psi2(1,n))
c          call Pack_cc_Sum(1,psi2(1,n),psi1(1,n),psi2(1,n))
          call Pack_cc_Sum2(1,psi1(1,n),psi2(1,n))
        end do
        call nwpw_timing_end(13)

*       *******************************************
*       **** get ewald and semicore forces     ****
*       ****   and do steepest descent on ions ****
*       *******************************************
        if (move) then

*          **** get the ewald force ****
           if (control_version().eq.3) call ewald_f(dbl_mb(fion(1)))

*          **** get the free-space ion force ****
           if (control_version().eq.4) call ion_ion_f(dbl_mb(fion(1)))

*          **** get the semicore force ****
           if (psp_semicore(0)) then
              call semicore_xc_F(ispin,dbl_mb(xcp(1)),dbl_mb(fion(1)))
           end if

*          **** get the qmmm force ****
           if (pspw_qmmm_found()) call pspw_qmmm_fion(dbl_mb(fion(1)))

*          **** get dispersion force ****
           if (ion_disp_on()) call ion_disp_force(dbl_mb(fion(1)))

*          **** remove ion forces using ion_FixIon ****
           call ion_FixIon(dbl_mb(fion(1)))

           call ion_optimize_step(dbl_mb(fion(1)))
        end if


*       *****************************************        
*       **** lagrange multiplier corrections ****
*       *****************************************        

        if (psp_pawexist()) then
        call psp_overlap_S(ispin,ne,psi1,psi_r)
        call psi_lmbda_paw(ispin,ne,nemax,npack1,psi_r,psi2,
     >                  dte,
     >                  lmd,dbl_mb(tmp_L(1)),ierr)
        else if (fractional) then
        call psi_lmbda2(ispin,ne,nemax,npack1,psi1,psi2,
     >                  dte,occ1,
     >                  lmd,dbl_mb(tmp_L(1)),ierr)
        else if (sic.or.hfx) then
        call psi_lmbda_sic(ispin,ne,nemax,npack1,psi1,psi2,dte,
     >                 lmd,dbl_mb(tmp_L(1)),ierr)
        else
        call psi_lmbda(ispin,ne,nemax,npack1,psi1,psi2,dte,
     >                 lmd,dbl_mb(tmp_L(1)),ierr)
        end if


      end do

*     *************************************
*     ***** total energy calculation ******
*     *************************************
      call nwpw_timing_start(10)
      call Parallel_np(np)
      call Parallel2d_np_i(np_i)
      call Parallel2d_np_j(np_j)

*     *** get orbital energies ****
      call Dneall_ffm_sym_Multiply(0,psi1,Hpsi,npack1,hml)
      call Dneall_m_scal(0,(-1.0d0),hml)
      if (fractional) then
         !call Dneall_m_diag_scal(0,dbl_mb(fweight(1)),hml)
         eorbit = Dneall_m_trace(0,hml)
         !call Dneall_m_diag_scal_inv(0,dbl_mb(fweight(1)),hml)
      else
         eorbit = Dneall_m_trace(0,hml)
      end if
      if (ispin.eq.1) eorbit = eorbit+eorbit
       

*     **** get ewald energy ****
      eion = 0.0d0
      if (control_version().eq.3) eion = ewald_e()
    
*     **** get free-space ion-ion energy ****
      if (control_version().eq.4) eion = ion_ion_e()

           
*     **** get coulomb energy ****
      if (control_version().eq.3) ehartr = coulomb_e(dcpl_mb(dng(1)))
      if (control_version().eq.4) then
         call D3dB_rr_dot(1,dbl_mb(rho(1)),dbl_mb(vc(1)),ehartr)
         ehartr = 0.5d0*ehartr*dv
      end if
        

*     **** get exchange-correlation energy ****
      call D3dB_rr_dot(1,dbl_mb(dnall(1)),dbl_mb(xce(1)),exc)
      call D3dB_rr_dot(1,dn(1,1),dbl_mb(xcp(1)),pxc)
      if (ispin.eq.1) then
         exc= exc + exc 
         pxc= pxc + pxc 
      else
         call D3dB_rr_dot(1,dbl_mb(dnall(1)+n2ft3d),
     >                      dbl_mb(xce(1)),exc2)
         call D3dB_rr_dot(1,dn(1,2),dbl_mb(xcp(1)+n2ft3d),pxc2)
         exc= exc + exc2
         pxc= pxc + pxc2
      end if
      exc = exc*dv
      pxc = pxc*dv

      if (nwpw_meta_gga_on()) then
         pxc = pxc + nwpw_meta_gga_pxc(ispin,ne,psi1)
      end if

        
  
*     ***** average Kohn-Sham kinetic energy ****
      call ke_ave(ispin,ne,psi1,eke,fractional,occ1)


*     **** average Kohn-Sham v_local energy ****
      call Pack_cc_dot(0,dcpl_mb(dng(1)),dcpl_mb(vl(1)),elocal)


*     *** add in long range part ****
      if (control_version().eq.4) then
      call D3dB_rr_dot(1,dbl_mb(rho(1)),dbl_mb(vlr_l(1)),sum)
      elocal = elocal + sum*dv
      end if

*     *** add in other real-space fields ****
      if (field_exist) then
      call D3dB_rr_dot(1,dbl_mb(rho(1)),dbl_mb(v_field(1)),sum)
      elocal = elocal + sum*dv
      end if

 
*     ***** average Kohn-Sham v_nonlocal energy ****
c      call dcopy(2*npack1*nemax,0.0d0,0,Hpsi,1)
c      call v_nonlocal(ispin,ne,psi1,Hpsi,
c     >                .false.,dbl_mb(ftest(1)),fractional,occ1)
c      enlocal = 0.0d0
c      do ms=1,ispin
c      do n=n1(ms),n2(ms)
c         call Pack_cc_idot(1,psi1(1,n),Hpsi(1,n),sum)
c         if (fractional) sum=sum*occ1(n)
c         enlocal = enlocal - sum
c      end do
c      end do
c      if (np.gt.1) call Parallel_SumAll(enlocal)
c      if (ispin.eq.1) enlocal = 2.0d0*enlocal
      enlocal = E_vnonlocal(ispin,ne,fractional,occ1)



*     **** total energy ****
      Eold=E(1)
      E(1) = eorbit + eion + exc - ehartr - pxc
      E(2) = eorbit
      E(3) = ehartr
      E(4) = exc
      E(5) = eion
      E(6) = eke
      E(7) = elocal
      E(8) = enlocal
      E(9) = 2.0d0*ehartr
      E(10) = pxc

      if (pspw_qmmm_found()) then
         e_lj     = pspw_qmmm_LJ_E()
         e_q      = pspw_qmmm_Q_E()
         e_spring = pspw_qmmm_spring_E()
         E(1)  = E(1) + e_lj + e_q + e_spring

         E(11) = e_lj
         E(12) = e_q
         E(13) = e_spring
      end if

*     **** PAW ee terms ****
      if (psp_pawexist()) then
         E(35) = psp_kinetic_atom(ispin,ne,psi1)      !*** kinetic atom ***
         E(36) = psp_kinetic_core()                   !*** kinetic core  - independent of psi ***
         E(37) = psp_valence_core_atom(ispin,ne,psi1) !*** valence core energy ***

         E(38) = psp_ncmp_vloc(ispin)         !*** (ncmp)*Vlocal
         E(39) = psp_vloc_atom(ispin,ne,psi1) !*** Vlocal (local basis) -  nv*Vsrloc + nloc*Vloc - ncmp*Vloc ***

         ehartree_atom = psp_hartree_atom(ispin,ne,psi1)
         ecmp_cmp      = psp_hartree_cmp_cmp(ispin)
         ecmp_pw       = psp_hartree_cmp_pw(ispin,dcpl_mb(dng(1)),dn)
         E(40) = ehartree_atom             !*** vcoulomb atom  ***
         E(41) = ecmp_cmp                  !*** ncmp-ncmp coulomb energy ***
         E(42) = ecmp_pw                   !*** ncmp-pw coulomb energy ***

         call psp_xc_atom(ispin,ne,psi1,exc_atom,pxc_atom)
         E(43) = exc_atom                  !*** exc atom  ***
         E(44) = pxc_atom                  !*** pxc atom  ***

         E(45) = psp_ion_core()            !*** ion core energy - independent of psi ***


         E(1) = E(1) + E(36) + E(45) 
     >        + exc_atom - pxc_atom
     >        - ehartree_atom - ecmp_cmp - ecmp_pw
      end if


*     **** SIC corrections ****
      if (pspw_SIC()) then
         call pspw_energy_SIC(ispin,psi_r,ehsic,phsic,exsic,pxsic)
         E(1) = E(1) + ehsic + exsic
         E(16) = ehsic
         E(17) = exsic
         if (pspw_SIC_relaxed()) then
            E(1)  = E(1) - phsic - pxsic
            E(18) = phsic
            E(19) = pxsic
         end if
      end if

*     **** HFX corrections ****
      if (pspw_HFX()) then
         call pspw_energy_HFX(ispin,psi_r,ehfx,phfx)
         E(1) = E(1) + ehfx
         E(20) = ehfx
         if (pspw_HFX_relaxed()) then
            E(1)  = E(1) - phfx 
            E(21) = phfx
         end if
      end if

*     **** DFT+U terms ****
      if (psp_U_psputerm()) then
         call psp_U_psputerm_energy(ehfx,phfx)
         E(29) =  ehfx
         E(30) =  phfx
         E(1)  = E(1) + E(29) - E(30)
      end if

*     **** metadynamics energy ****
      if (meta_found()) then
         call meta_energypotential(ispin,ne,psi1,E(31),E(32))
         E(1)  = E(1) + E(31) - E(32)
      end if

*     **** Dispersion energy ****
      if (ion_disp_on()) then
         E(33) = ion_disp_energy()
         E(1)  = E(1) + E(33)
      end if


*     **** set convergence variables ****
      deltae = (E(1)-Eold)/(dt*dble(it_in))

*     *** deltac ***
      do n=n1(1),n2(ispin)
         do i=1,npack1
            Hpsi(i,n) = psi2(i,n) - psi1(i,n)
         end do
      end do

      do n=n1(1),n2(ispin)
         call Pack_cc_idot(1,Hpsi(1,n),Hpsi(1,n),dbl_mb(sumi(1)+n-1))
      end do
     
      if (np_i.gt.1) 
     >     call D3dB_Vector_SumAll((n2(ispin)-n1(1)+1),
     >                             dbl_mb(sumi(1)))

      deltac = 0.0d0
      do n=n1(1),n2(ispin)
         if (dbl_mb(sumi(1)+n-1).gt.deltac) deltac=dbl_mb(sumi(1)+n-1)
      end do
      if (np_j.gt.1) call D1dB_MaxAll(deltac)
      deltac = deltac/dte

c     do i=1,ion_nion()
c         fion(1,i) = (r2(1,i) - r1(1,i))/ion_dti(i)
c         fion(2,i) = (r2(2,i) - r1(2,i))/ion_dti(i)
c         fion(3,i) = (r2(3,i) - r1(3,i))/ion_dti(i)
c     end do

*     *** deltar ***
      deltar = deltamm
      if (move) then
        do i=1,ion_nion()
           sum = dsqrt( dbl_mb(fion(1)+(i-1)*3  )**2 
     >                + dbl_mb(fion(1)+(i-1)*3+1)**2 
     >                + dbl_mb(fion(1)+(i-1)*3+2)**2)
           if (sum.gt.deltar) deltar = sum
        end do
      end if
       
      call nwpw_timing_end(10)

*     **** dealocate MA local variables ****
      call nwpw_timing_start(12)
      value = MA_pop_stack(sumi(2))
      value = MA_pop_stack(ftest(2))
      value = MA_pop_stack(fion(2))
      value = MA_pop_stack(dnall(2))
      value = MA_pop_stack(xce(2))
      value = MA_pop_stack(xcp(2))
      value = MA_pop_stack(dng(2))
      value = MA_pop_stack(rho(2))
      value = MA_pop_stack(vl(2))
      value = MA_pop_stack(v_field(2))

      if ((control_version().eq.4).or.(field_exist))
     >   value = MA_pop_stack(r_grid(2))

      if (control_version().eq.4) 
     >   value = MA_pop_stack(vlr_l(2))

      value = MA_pop_stack(vc(2))
      value = MA_pop_stack(tmp2(2))
      value = MA_pop_stack(tmp1(2))
      value = Dneall_m_pop_stack(tmp_L)

      call nwpw_timing_end(12)


      return
      end
 
