LCOV - code coverage report
Current view: top level - src/xc - xc_b97.F (source / functions) Coverage Total Hit
Test: CP2K Regtests (git:42dac4a) Lines: 31.1 % 1402 436
Test Date: 2025-07-25 12:55:17 Functions: 62.5 % 8 5

            Line data    Source code
       1              : !--------------------------------------------------------------------------------------------------!
       2              : !   CP2K: A general program to perform molecular dynamics simulations                              !
       3              : !   Copyright 2000-2025 CP2K developers group <https://cp2k.org>                                   !
       4              : !                                                                                                  !
       5              : !   SPDX-License-Identifier: GPL-2.0-or-later                                                      !
       6              : !--------------------------------------------------------------------------------------------------!
       7              : 
       8              : ! **************************************************************************************************
       9              : !> \brief calculates the b97 correlation functional
      10              : !> \note
      11              : !>      This was generated with the help of a maple worksheet that you can
      12              : !>      find under doc/b97.mw .
      13              : !>      I did not add 3. derivatives in the polazied (lsd) case because it
      14              : !>      would have added lots of code. If you need them the worksheet
      15              : !>      is already prepared for them, and by uncommenting a couple of lines
      16              : !>      you should be able to generate them.
      17              : !>      Other parametrizations (B97-1 by FA Hamprecht, AJ Cohen, DJ Tozer, NC Handy)
      18              : !>      could be easily added, the maple file should be straightforward to extend
      19              : !>      to HCTH (and thus implement it also for unrestricted calculations).
      20              : !> \par History
      21              : !>      01.2009 created [fawzi]
      22              : !> \author fawzi
      23              : ! **************************************************************************************************
      24              : MODULE xc_b97
      25              :    USE bibliography,                    ONLY: Becke1997,&
      26              :                                               Grimme2006,&
      27              :                                               cite_reference
      28              :    USE input_section_types,             ONLY: section_vals_type,&
      29              :                                               section_vals_val_get
      30              :    USE kinds,                           ONLY: dp
      31              :    USE mathconstants,                   ONLY: pi
      32              :    USE xc_derivative_desc,              ONLY: deriv_norm_drho,&
      33              :                                               deriv_norm_drhoa,&
      34              :                                               deriv_norm_drhob,&
      35              :                                               deriv_rho,&
      36              :                                               deriv_rhoa,&
      37              :                                               deriv_rhob
      38              :    USE xc_derivative_set_types,         ONLY: xc_derivative_set_type,&
      39              :                                               xc_dset_get_derivative
      40              :    USE xc_derivative_types,             ONLY: xc_derivative_get,&
      41              :                                               xc_derivative_type
      42              :    USE xc_input_constants,              ONLY: xc_b97_3c,&
      43              :                                               xc_b97_grimme,&
      44              :                                               xc_b97_mardirossian,&
      45              :                                               xc_b97_orig
      46              :    USE xc_rho_cflags_types,             ONLY: xc_rho_cflags_type
      47              :    USE xc_rho_set_types,                ONLY: xc_rho_set_get,&
      48              :                                               xc_rho_set_type
      49              : #include "../base/base_uses.f90"
      50              : 
      51              :    IMPLICIT NONE
      52              :    PRIVATE
      53              : 
      54              :    LOGICAL, PRIVATE, PARAMETER :: debug_this_module = .TRUE.
      55              :    CHARACTER(len=*), PARAMETER, PRIVATE :: moduleN = 'xc_b97'
      56              : 
      57              :    PUBLIC :: b97_lda_info, b97_lsd_info, b97_lda_eval, b97_lsd_eval
      58              : 
      59              :    REAL(dp), DIMENSION(10) :: params_b97_orig = (/0.8094_dp, 0.5073_dp, 0.7481_dp, &
      60              :                                             0.9454_dp, 0.7471_dp, -4.5961_dp, 0.1737_dp, 2.3487_dp, -2.4868_dp, 1.0_dp - 0.1943_dp/)
      61              :    REAL(dp), DIMENSION(10) :: params_b97_grimme = (/1.08662_dp, -0.52127_dp, 3.25429_dp, &
      62              :                                                   0.69041_dp, 6.30270_dp, -14.9712_dp, 0.22340_dp, -1.56208_dp, 1.94293_dp, 1.0_dp/)
      63              :    REAL(dp), DIMENSION(10) :: params_b97_mardirossian = (/0.833_dp, 0.603_dp, 1.194_dp, &
      64              :                                                           1.219_dp, -1.850_dp, 0.00_dp, 0.556_dp, -0.257_dp, 0.00_dp, 1.0_dp/)
      65              :    REAL(dp), DIMENSION(10) :: params_b97_3c = (/1.076616_dp, -0.469912_dp, 3.322442_dp, &
      66              :                                            0.635047_dp, 5.532103_dp, -15.301575_dp, 0.543788_dp, -1.444420_dp, 1.637436_dp, 1.0_dp/)
      67              : 
      68              : CONTAINS
      69              : 
      70              : ! **************************************************************************************************
      71              : !> \brief ...
      72              : !> \param param ...
      73              : !> \param lda ...
      74              : !> \param sx ...
      75              : !> \param sc ...
      76              : !> \param reference ...
      77              : !> \param shortform ...
      78              : ! **************************************************************************************************
      79          623 :    SUBROUTINE b97_ref(param, lda, sx, sc, reference, shortform)
      80              :       INTEGER                                            :: param
      81              :       LOGICAL                                            :: lda
      82              :       REAL(dp), INTENT(in)                               :: sx, sc
      83              :       CHARACTER(LEN=*), INTENT(OUT), OPTIONAL            :: reference, shortform
      84              : 
      85              :       CHARACTER(20)                                      :: pol
      86              : 
      87          623 :       IF (lda) THEN
      88          623 :          pol = "(unpolarized)"
      89              :       ELSE
      90            0 :          pol = "(polarized)"
      91              :       END IF
      92          623 :       SELECT CASE (param)
      93              :       CASE (xc_b97_orig)
      94            0 :          CALL cite_reference(Becke1997)
      95            0 :          IF (sx == 1._dp .AND. sc == 1._dp) THEN
      96            0 :             IF (PRESENT(reference)) THEN
      97              :                reference = "A.D.Becke, "// &
      98              :                            "J. Chem. Phys, vol. 107, pp. 8554, (1997), needs exact x, "// &
      99            0 :                            pol
     100              :             END IF
     101            0 :             IF (PRESENT(shortform)) THEN
     102            0 :                shortform = "B97, Becke 1997 xc functional, needs exact x "//pol
     103              :             END IF
     104              :          ELSE
     105            0 :             IF (PRESENT(reference)) THEN
     106              :                WRITE (reference, "(a,a,'sx=',f5.3,'sc=',f5.3,a,a)") &
     107            0 :                   "A.D.Becke, ", &
     108            0 :                   "J. Chem. Phys, vol. 107, pp. 8554, (1997)", &
     109            0 :                   sx, sc, ", needs exact x ", pol
     110              :             END IF
     111            0 :             IF (PRESENT(shortform)) THEN
     112              :                WRITE (shortform, "(a,a,'sx=',f5.3,'sc=',f5.3)") &
     113            0 :                   "B97, Becke 1997 xc functional (unpolarized)", pol, sx, sc
     114              :             END IF
     115              :          END IF
     116              :       CASE (xc_b97_grimme)
     117          579 :          CALL cite_reference(Becke1997)
     118          579 :          CALL cite_reference(Grimme2006)
     119          579 :          IF (sx == 1._dp .AND. sc == 1._dp) THEN
     120            0 :             IF (PRESENT(reference)) THEN
     121              :                reference = "B97-D, Grimme xc functional,"// &
     122              :                            " J Comput Chem 27: 1787-1799 (2006),"// &
     123            0 :                            " needs C6 dispersion "//pol
     124              :             END IF
     125            0 :             IF (PRESENT(shortform)) THEN
     126            0 :                shortform = "B97-D, Grimme xc functional "//pol
     127              :             END IF
     128              :          ELSE
     129          579 :             IF (PRESENT(reference)) THEN
     130              :                WRITE (reference, "(a,a,3x,' sx=',f6.3,' sc=',f6.3,1x,a)") &
     131            4 :                   "B97-D, Grimme xc functional,", &
     132            4 :                   " J Comput Chem 27: 1787-1799 (2006) ", &
     133            8 :                   sx, sc, pol
     134              :             END IF
     135          579 :             IF (PRESENT(shortform)) THEN
     136              :                WRITE (shortform, "(a,a,3x,' sx=',f6.3,' sc=',f6.3,' (LDA)')") &
     137            4 :                   "B97-D, Grimme xc functional ", pol, sx, sc
     138              :             END IF
     139              :          END IF
     140              :       CASE (xc_b97_mardirossian)
     141            0 :          CALL cite_reference(Becke1997)
     142              : !       CALL cite_reference(Mardirossian2014)
     143            0 :          IF (sx == 1._dp .AND. sc == 1._dp) THEN
     144            0 :             IF (PRESENT(reference)) THEN
     145              :                reference = "wB97X-V, xc functional,"// &
     146              :                            " Mardirossian and Head-Gordon, PCCP DOI: 10.1039/c3cp54374a,"// &
     147            0 :                            " needs HFX exchange and VV10 dispersion (NOT TESTED)"//pol
     148              :             END IF
     149            0 :             IF (PRESENT(shortform)) THEN
     150            0 :                shortform = "wB97X-V, HFX+B97+VV10 functional (NOT TESTED)"//pol
     151              :             END IF
     152              :          ELSE
     153            0 :             CPABORT("Unsupported scaling factors")
     154              :          END IF
     155              :       CASE (xc_b97_3c)
     156           44 :          CALL cite_reference(Becke1997)
     157              : !       CALL cite_reference(Mardirossian2014)
     158           44 :          IF (sx == 1._dp .AND. sc == 1._dp) THEN
     159           44 :             IF (PRESENT(reference)) THEN
     160              :                reference = "B97-3c composite method,"// &
     161              :                            " S. Grimme, A. Hansen, no reference available, yet,"// &
     162              :                            " use TZVP basis set, D3(BJ) dispersion correction"// &
     163            0 :                            " with CALCULATE_C9_TERM and SRB correction"//pol
     164              :             END IF
     165           44 :             IF (PRESENT(shortform)) THEN
     166            0 :                shortform = "B97-3c composite method"//pol
     167              :             END IF
     168              :          ELSE
     169            0 :             CPABORT("Unsupported scaling factors")
     170              :          END IF
     171              :       CASE default
     172          623 :          CPABORT("Unsupported parametrization")
     173              :       END SELECT
     174          623 :    END SUBROUTINE b97_ref
     175              : 
     176              : ! **************************************************************************************************
     177              : !> \brief return various information on the functional
     178              : !> \param b97_params section selecting the various parameters for the functional
     179              : !> \param reference string with the reference of the actual functional
     180              : !> \param shortform string with the shortform of the functional name
     181              : !> \param needs the components needed by this functional are set to
     182              : !>        true (does not set the unneeded components to false)
     183              : !> \param max_deriv ...
     184              : !> \author fawzi
     185              : ! **************************************************************************************************
     186         1869 :    SUBROUTINE b97_lda_info(b97_params, reference, shortform, needs, max_deriv)
     187              :       TYPE(section_vals_type), POINTER                   :: b97_params
     188              :       CHARACTER(LEN=*), INTENT(OUT), OPTIONAL            :: reference, shortform
     189              :       TYPE(xc_rho_cflags_type), INTENT(inout), OPTIONAL  :: needs
     190              :       INTEGER, INTENT(out), OPTIONAL                     :: max_deriv
     191              : 
     192              :       INTEGER                                            :: param
     193              :       REAL(kind=dp)                                      :: sc, sx
     194              : 
     195          623 :       CALL section_vals_val_get(b97_params, "parametrization", i_val=param)
     196          623 :       CALL section_vals_val_get(b97_params, "scale_x", r_val=sx)
     197          623 :       CALL section_vals_val_get(b97_params, "scale_c", r_val=sc)
     198              : 
     199         1861 :       CALL b97_ref(param, .TRUE., sx, sc, reference, shortform)
     200          623 :       IF (PRESENT(needs)) THEN
     201          619 :          needs%rho = .TRUE.
     202          619 :          needs%norm_drho = .TRUE.
     203              :       END IF
     204          623 :       IF (PRESENT(max_deriv)) max_deriv = 2
     205              : 
     206          623 :    END SUBROUTINE b97_lda_info
     207              : 
     208              : ! **************************************************************************************************
     209              : !> \brief return various information on the functional
     210              : !> \param b97_params section selecting the various parameters for the functional
     211              : !> \param reference string with the reference of the actual functional
     212              : !> \param shortform string with the shortform of the functional name
     213              : !> \param needs the components needed by this functional are set to
     214              : !>        true (does not set the unneeded components to false)
     215              : !> \param max_deriv ...
     216              : !> \author fawzi
     217              : ! **************************************************************************************************
     218            0 :    SUBROUTINE b97_lsd_info(b97_params, reference, shortform, needs, max_deriv)
     219              :       TYPE(section_vals_type), POINTER                   :: b97_params
     220              :       CHARACTER(LEN=*), INTENT(OUT), OPTIONAL            :: reference, shortform
     221              :       TYPE(xc_rho_cflags_type), INTENT(inout), OPTIONAL  :: needs
     222              :       INTEGER, INTENT(out), OPTIONAL                     :: max_deriv
     223              : 
     224              :       INTEGER                                            :: param
     225              :       REAL(kind=dp)                                      :: sc, sx
     226              : 
     227            0 :       CALL section_vals_val_get(b97_params, "parametrization", i_val=param)
     228            0 :       CALL section_vals_val_get(b97_params, "scale_x", r_val=sx)
     229            0 :       CALL section_vals_val_get(b97_params, "scale_c", r_val=sc)
     230              : 
     231            0 :       CALL b97_ref(param, .FALSE., sx, sc, reference, shortform)
     232            0 :       IF (PRESENT(needs)) THEN
     233            0 :          needs%rho_spin = .TRUE.
     234            0 :          needs%norm_drho_spin = .TRUE.
     235              :       END IF
     236            0 :       IF (PRESENT(max_deriv)) max_deriv = 2
     237              : 
     238            0 :    END SUBROUTINE b97_lsd_info
     239              : 
     240              : ! **************************************************************************************************
     241              : !> \brief evaluates the b97 correlation functional for lda
     242              : !> \param rho_set the density where you want to evaluate the functional
     243              : !> \param deriv_set place where to store the functional derivatives (they are
     244              : !>        added to the derivatives)
     245              : !> \param grad_deriv degree of the derivative that should be evaluated,
     246              : !>        if positive all the derivatives up to the given degree are evaluated,
     247              : !>        if negative only the given degree is calculated
     248              : !> \param b97_params ...
     249              : !> \author fawzi
     250              : ! **************************************************************************************************
     251         3035 :    SUBROUTINE b97_lda_eval(rho_set, deriv_set, grad_deriv, b97_params)
     252              :       TYPE(xc_rho_set_type), INTENT(IN)                  :: rho_set
     253              :       TYPE(xc_derivative_set_type), INTENT(IN)           :: deriv_set
     254              :       INTEGER, INTENT(in)                                :: grad_deriv
     255              :       TYPE(section_vals_type), POINTER                   :: b97_params
     256              : 
     257              :       CHARACTER(len=*), PARAMETER                        :: routineN = 'b97_lda_eval'
     258              : 
     259              :       INTEGER                                            :: handle, npoints, param
     260              :       INTEGER, DIMENSION(2, 3)                           :: bo
     261              :       REAL(kind=dp)                                      :: epsilon_norm_drho, epsilon_rho, scale_c, &
     262              :                                                             scale_x
     263          607 :       REAL(kind=dp), CONTIGUOUS, DIMENSION(:, :, :), POINTER :: dummy, e_0, e_ndrho, &
     264          607 :          e_ndrho_ndrho, e_ndrho_ndrho_ndrho, e_ndrho_ndrho_rho, e_ndrho_rho, e_ndrho_rho_rho, &
     265          607 :          e_rho, e_rho_rho, e_rho_rho_rho, norm_drho, rho
     266              :       TYPE(xc_derivative_type), POINTER                  :: deriv
     267              : 
     268          607 :       CALL timeset(routineN, handle)
     269              : 
     270              :       CALL xc_rho_set_get(rho_set, rho=rho, &
     271              :                           norm_drho=norm_drho, local_bounds=bo, rho_cutoff=epsilon_rho, &
     272          607 :                           drho_cutoff=epsilon_norm_drho)
     273          607 :       npoints = (bo(2, 1) - bo(1, 1) + 1)*(bo(2, 2) - bo(1, 2) + 1)*(bo(2, 3) - bo(1, 3) + 1)
     274              : 
     275          607 :       dummy => rho
     276              : 
     277          607 :       e_0 => dummy
     278          607 :       e_rho => dummy
     279          607 :       e_ndrho => dummy
     280          607 :       e_rho_rho => dummy
     281          607 :       e_ndrho_rho => dummy
     282          607 :       e_ndrho_ndrho => dummy
     283          607 :       e_rho_rho_rho => dummy
     284          607 :       e_ndrho_rho_rho => dummy
     285          607 :       e_ndrho_ndrho_rho => dummy
     286          607 :       e_ndrho_ndrho_ndrho => dummy
     287              : 
     288          607 :       IF (grad_deriv >= 0) THEN
     289              :          deriv => xc_dset_get_derivative(deriv_set, [INTEGER::], &
     290          607 :                                          allocate_deriv=.TRUE.)
     291          607 :          CALL xc_derivative_get(deriv, deriv_data=e_0)
     292              :       END IF
     293          607 :       IF (grad_deriv >= 1 .OR. grad_deriv == -1) THEN
     294              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rho], &
     295          607 :                                          allocate_deriv=.TRUE.)
     296          607 :          CALL xc_derivative_get(deriv, deriv_data=e_rho)
     297              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drho], &
     298          607 :                                          allocate_deriv=.TRUE.)
     299          607 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho)
     300              :       END IF
     301          607 :       IF (grad_deriv >= 2 .OR. grad_deriv == -2) THEN
     302              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rho, deriv_rho], &
     303            0 :                                          allocate_deriv=.TRUE.)
     304            0 :          CALL xc_derivative_get(deriv, deriv_data=e_rho_rho)
     305              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drho, deriv_rho], &
     306            0 :                                          allocate_deriv=.TRUE.)
     307            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho_rho)
     308              :          deriv => xc_dset_get_derivative(deriv_set, &
     309            0 :                                          [deriv_norm_drho, deriv_norm_drho], allocate_deriv=.TRUE.)
     310            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho_ndrho)
     311              :       END IF
     312          607 :       IF (grad_deriv >= 3 .OR. grad_deriv == -3) THEN
     313              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rho, deriv_rho, deriv_rho], &
     314            0 :                                          allocate_deriv=.TRUE.)
     315            0 :          CALL xc_derivative_get(deriv, deriv_data=e_rho_rho_rho)
     316              :          deriv => xc_dset_get_derivative(deriv_set, &
     317            0 :                                          [deriv_norm_drho, deriv_rho, deriv_rho], allocate_deriv=.TRUE.)
     318            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho_rho_rho)
     319              :          deriv => xc_dset_get_derivative(deriv_set, &
     320            0 :                                          [deriv_norm_drho, deriv_norm_drho, deriv_rho], allocate_deriv=.TRUE.)
     321            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho_ndrho_rho)
     322              :          deriv => xc_dset_get_derivative(deriv_set, &
     323            0 :                                          [deriv_norm_drho, deriv_norm_drho, deriv_norm_drho], allocate_deriv=.TRUE.)
     324            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrho_ndrho_ndrho)
     325              :       END IF
     326          607 :       IF (grad_deriv > 3 .OR. grad_deriv < -3) THEN
     327            0 :          CPABORT("derivatives bigger than 3 not implemented")
     328              :       END IF
     329              : 
     330          607 :       CALL section_vals_val_get(b97_params, "parametrization", i_val=param)
     331          607 :       CALL section_vals_val_get(b97_params, "scale_c", r_val=scale_c)
     332          607 :       CALL section_vals_val_get(b97_params, "scale_x", r_val=scale_x)
     333              : 
     334              : !$OMP     PARALLEL DEFAULT(NONE) &
     335              : !$OMP              SHARED(rho, norm_drho, e_0, e_rho, e_ndrho, e_rho_rho) &
     336              : !$OMP              SHARED(e_ndrho_rho, e_ndrho_ndrho) &
     337              : !$OMP              SHARED(grad_deriv, npoints, epsilon_rho) &
     338          607 : !$OMP              SHARED(epsilon_norm_drho, param, scale_c, scale_x)
     339              : 
     340              :       CALL b97_lda_calc(rho_tot=rho, norm_drho=norm_drho, &
     341              :                         e_0=e_0, e_r=e_rho, e_ndr=e_ndrho, e_r_r=e_rho_rho, &
     342              :                         e_r_ndr=e_ndrho_rho, e_ndr_ndr=e_ndrho_ndrho, &
     343              :                         ! e_rho_rho_rho=e_rho_rho_rho, e_ndrho_rho_rho=e_ndrho_rho_rho,&
     344              :                         ! e_ndrho_ndrho_rho=e_ndrho_ndrho_rho,e_ndrho_ndrho_ndrho=e_ndrho_ndrho_ndrho,&
     345              :                         grad_deriv=grad_deriv, &
     346              :                         npoints=npoints, epsilon_rho=epsilon_rho, &
     347              :                         param=param, scale_c_in=scale_c, scale_x_in=scale_x)
     348              : 
     349              : !$OMP     END PARALLEL
     350              : 
     351          607 :       NULLIFY (dummy)
     352          607 :       CALL timestop(handle)
     353          607 :    END SUBROUTINE b97_lda_eval
     354              : 
     355              : ! **************************************************************************************************
     356              : !> \brief evaluates the b 97 xc functional for lsd
     357              : !> \param rho_set ...
     358              : !> \param deriv_set ...
     359              : !> \param grad_deriv ...
     360              : !> \param b97_params ...
     361              : !> \author fawzi
     362              : ! **************************************************************************************************
     363            0 :    SUBROUTINE b97_lsd_eval(rho_set, deriv_set, grad_deriv, b97_params)
     364              :       TYPE(xc_rho_set_type), INTENT(IN)                  :: rho_set
     365              :       TYPE(xc_derivative_set_type), INTENT(IN)           :: deriv_set
     366              :       INTEGER, INTENT(in)                                :: grad_deriv
     367              :       TYPE(section_vals_type), POINTER                   :: b97_params
     368              : 
     369              :       CHARACTER(len=*), PARAMETER                        :: routineN = 'b97_lsd_eval'
     370              : 
     371              :       INTEGER                                            :: handle, npoints, param
     372              :       INTEGER, DIMENSION(2, 3)                           :: bo
     373              :       REAL(kind=dp)                                      :: epsilon_rho, scale_c, scale_x
     374            0 :       REAL(kind=dp), CONTIGUOUS, DIMENSION(:, :, :), POINTER :: dummy, e_0, e_ndra, e_ndra_ndra, &
     375            0 :          e_ndra_ndrb, e_ndra_ra, e_ndra_rb, e_ndrb, e_ndrb_ndrb, e_ndrb_ra, e_ndrb_rb, e_ra, &
     376            0 :          e_ra_ra, e_ra_rb, e_rb, e_rb_rb, norm_drhoa, norm_drhob, rhoa, rhob
     377              :       TYPE(xc_derivative_type), POINTER                  :: deriv
     378              : 
     379            0 :       CALL timeset(routineN, handle)
     380            0 :       NULLIFY (deriv)
     381              : 
     382              :       CALL xc_rho_set_get(rho_set, &
     383              :                           rhoa=rhoa, rhob=rhob, norm_drhoa=norm_drhoa, &
     384              :                           norm_drhob=norm_drhob, &
     385              :                           rho_cutoff=epsilon_rho, &
     386            0 :                           local_bounds=bo)
     387            0 :       npoints = (bo(2, 1) - bo(1, 1) + 1)*(bo(2, 2) - bo(1, 2) + 1)*(bo(2, 3) - bo(1, 3) + 1)
     388              : 
     389            0 :       dummy => rhoa
     390            0 :       e_0 => dummy
     391            0 :       e_ra => dummy
     392            0 :       e_rb => dummy
     393            0 :       e_ndra => dummy
     394            0 :       e_ndrb => dummy
     395              : 
     396            0 :       e_ndra_ra => dummy
     397            0 :       e_ndra_rb => dummy
     398            0 :       e_ndrb_rb => dummy
     399            0 :       e_ndrb_ra => dummy
     400              : 
     401            0 :       e_ndra_ndra => dummy
     402            0 :       e_ndrb_ndrb => dummy
     403            0 :       e_ndra_ndrb => dummy
     404              : 
     405            0 :       e_ra_ra => dummy
     406            0 :       e_ra_rb => dummy
     407            0 :       e_rb_rb => dummy
     408              : 
     409            0 :       IF (grad_deriv >= 0) THEN
     410              :          deriv => xc_dset_get_derivative(deriv_set, [INTEGER::], &
     411            0 :                                          allocate_deriv=.TRUE.)
     412            0 :          CALL xc_derivative_get(deriv, deriv_data=e_0)
     413              :       END IF
     414            0 :       IF (grad_deriv >= 1 .OR. grad_deriv == -1) THEN
     415              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rhoa], &
     416            0 :                                          allocate_deriv=.TRUE.)
     417            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ra)
     418              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rhob], &
     419            0 :                                          allocate_deriv=.TRUE.)
     420            0 :          CALL xc_derivative_get(deriv, deriv_data=e_rb)
     421              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhoa], &
     422            0 :                                          allocate_deriv=.TRUE.)
     423            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndra)
     424              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhob], &
     425            0 :                                          allocate_deriv=.TRUE.)
     426            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrb)
     427              :       END IF
     428            0 :       IF (grad_deriv >= 2 .OR. grad_deriv == -2) THEN
     429              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rhoa, deriv_rhoa], &
     430            0 :                                          allocate_deriv=.TRUE.)
     431            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ra_ra)
     432              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rhoa, deriv_rhob], &
     433            0 :                                          allocate_deriv=.TRUE.)
     434            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ra_rb)
     435              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_rhob, deriv_rhob], &
     436            0 :                                          allocate_deriv=.TRUE.)
     437            0 :          CALL xc_derivative_get(deriv, deriv_data=e_rb_rb)
     438              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhoa, deriv_rhoa], &
     439            0 :                                          allocate_deriv=.TRUE.)
     440            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndra_ra)
     441              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhoa, deriv_rhob], &
     442            0 :                                          allocate_deriv=.TRUE.)
     443            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndra_rb)
     444              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhob, deriv_rhob], &
     445            0 :                                          allocate_deriv=.TRUE.)
     446            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrb_rb)
     447              :          deriv => xc_dset_get_derivative(deriv_set, [deriv_norm_drhob, deriv_rhoa], &
     448            0 :                                          allocate_deriv=.TRUE.)
     449            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrb_ra)
     450              :          deriv => xc_dset_get_derivative(deriv_set, &
     451            0 :                                          [deriv_norm_drhoa, deriv_norm_drhoa], allocate_deriv=.TRUE.)
     452            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndra_ndra)
     453              :          deriv => xc_dset_get_derivative(deriv_set, &
     454            0 :                                          [deriv_norm_drhoa, deriv_norm_drhob], allocate_deriv=.TRUE.)
     455            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndra_ndrb)
     456              :          deriv => xc_dset_get_derivative(deriv_set, &
     457            0 :                                          [deriv_norm_drhob, deriv_norm_drhob], allocate_deriv=.TRUE.)
     458            0 :          CALL xc_derivative_get(deriv, deriv_data=e_ndrb_ndrb)
     459              :       END IF
     460              :       IF (grad_deriv >= 3 .OR. grad_deriv == -3) THEN
     461              :          ! to do
     462              :       END IF
     463              : 
     464            0 :       CALL section_vals_val_get(b97_params, "parametrization", i_val=param)
     465            0 :       CALL section_vals_val_get(b97_params, "scale_x", r_val=scale_x)
     466            0 :       CALL section_vals_val_get(b97_params, "scale_c", r_val=scale_c)
     467              : 
     468              : !$OMP     PARALLEL DEFAULT (NONE) &
     469              : !$OMP              SHARED(rhoa, rhob, norm_drhoa, norm_drhob, e_0, e_ra) &
     470              : !$OMP              SHARED(e_rb, e_ndra, e_ndrb, e_ra_ra, e_ra_rb, e_rb_rb) &
     471              : !$OMP              SHARED(e_ndra_ra, e_ndrb_ra, e_ndrb_rb, e_ndra_rb) &
     472              : !$OMP              SHARED(e_ndra_ndra, e_ndrb_ndrb, e_ndra_ndrb) &
     473              : !$OMP              SHARED(grad_deriv, npoints, param, scale_c, scale_x) &
     474            0 : !$OMP              SHARED(epsilon_rho)
     475              : 
     476              :       CALL b97_lsd_calc( &
     477              :          rhoa=rhoa, rhob=rhob, norm_drhoa=norm_drhoa, &
     478              :          norm_drhob=norm_drhob, e_0=e_0, &
     479              :          e_ra=e_ra, e_rb=e_rb, &
     480              :          e_ndra=e_ndra, e_ndrb=e_ndrb, &
     481              :          e_ra_ra=e_ra_ra, e_ra_rb=e_ra_rb, e_rb_rb=e_rb_rb, &
     482              :          e_ra_ndra=e_ndra_ra, e_ra_ndrb=e_ndrb_ra, &
     483              :          e_rb_ndrb=e_ndrb_rb, e_rb_ndra=e_ndra_rb, &
     484              :          e_ndra_ndra=e_ndra_ndra, e_ndrb_ndrb=e_ndrb_ndrb, &
     485              :          e_ndra_ndrb=e_ndra_ndrb, &
     486              :          grad_deriv=grad_deriv, npoints=npoints, &
     487              :          epsilon_rho=epsilon_rho, &
     488              :          param=param, scale_c_in=scale_c, scale_x_in=scale_x)
     489              : 
     490              : !$OMP     END PARALLEL
     491              : 
     492            0 :       NULLIFY (dummy)
     493            0 :       CALL timestop(handle)
     494            0 :    END SUBROUTINE b97_lsd_eval
     495              : 
     496              : ! **************************************************************************************************
     497              : !> \brief ...
     498              : !> \param param ...
     499              : !> \return ...
     500              : ! **************************************************************************************************
     501          607 :    FUNCTION b97_coeffs(param) RESULT(res)
     502              :       INTEGER, INTENT(in)                                :: param
     503              :       REAL(dp), DIMENSION(10)                            :: res
     504              : 
     505          607 :       SELECT CASE (param)
     506              :       CASE (xc_b97_orig)
     507            0 :          res = params_b97_orig
     508              :       CASE (xc_b97_grimme)
     509         6281 :          res = params_b97_grimme
     510              :       CASE (xc_b97_mardirossian)
     511            0 :          res = params_b97_mardirossian
     512              :       CASE (xc_b97_3c)
     513          396 :          res = params_b97_3c
     514              :       CASE default
     515            0 :          CPABORT("Unsupported parametrization")
     516          607 :          res = 0.0_dp
     517              :       END SELECT
     518          607 :    END FUNCTION b97_coeffs
     519              : 
     520              : ! **************************************************************************************************
     521              : !> \brief low level calculation of the b97 exchange-correlation functional for lsd
     522              : !> \param rhoa alpha spin density
     523              : !> \param rhob beta spin desnity
     524              : !> \param norm_drhoa || grad rhoa ||
     525              : !> \param norm_drhob || grad rhoa ||
     526              : !> \param e_0 adds to it the local value of the functional
     527              : !> \param e_ra derivative of the functional with respect to ra
     528              : !> \param e_rb derivative of the functional with respect to rb
     529              : !> \param e_ndra derivative of the functional with respect to ndra
     530              : !> \param e_ndrb derivative of the functional with respect to ndrb
     531              : !> \param e_ra_ndra derivative of the functional with respect to ra_ndra
     532              : !> \param e_ra_ndrb derivative of the functional with respect to ra_ndrb
     533              : !> \param e_rb_ndra derivative of the functional with respect to rb_ndra
     534              : !> \param e_rb_ndrb derivative of the functional with respect to rb_ndrb
     535              : !> \param e_ndra_ndra derivative of the functional with respect to ndra_ndra
     536              : !> \param e_ndrb_ndrb derivative of the functional with respect to ndrb_ndrb
     537              : !> \param e_ndra_ndrb derivative of the functional with respect to ndra_ndrb
     538              : !> \param e_ra_ra derivative of the functional with respect to ra_ra
     539              : !> \param e_ra_rb derivative of the functional with respect to ra_rb
     540              : !> \param e_rb_rb derivative of the functional with respect to rb_rb
     541              : !> \param grad_deriv ...
     542              : !> \param npoints ...
     543              : !> \param epsilon_rho ...
     544              : !> \param param ...
     545              : !> \param scale_c_in derivative of the functional with respect to c_in
     546              : !> \param scale_x_in derivative of the functional with respect to x_in
     547              : !> \author fawzi
     548              : ! **************************************************************************************************
     549            0 :    SUBROUTINE b97_lsd_calc(rhoa, rhob, norm_drhoa, norm_drhob, &
     550              :                            e_0, e_ra, e_rb, e_ndra, e_ndrb, &
     551              :                            e_ra_ndra, e_ra_ndrb, e_rb_ndra, e_rb_ndrb, &
     552              :                            e_ndra_ndra, e_ndrb_ndrb, e_ndra_ndrb, &
     553              :                            e_ra_ra, e_ra_rb, e_rb_rb, &
     554              :                            grad_deriv, npoints, epsilon_rho, &
     555              :                            param, scale_c_in, scale_x_in)
     556              :       REAL(kind=dp), DIMENSION(*), INTENT(in)            :: rhoa, rhob, norm_drhoa, norm_drhob
     557              :       REAL(kind=dp), DIMENSION(*), INTENT(inout) :: e_0, e_ra, e_rb, e_ndra, e_ndrb, e_ra_ndra, &
     558              :          e_ra_ndrb, e_rb_ndra, e_rb_ndrb, e_ndra_ndra, e_ndrb_ndrb, e_ndra_ndrb, e_ra_ra, e_ra_rb, &
     559              :          e_rb_rb
     560              :       INTEGER, INTENT(in)                                :: grad_deriv, npoints
     561              :       REAL(kind=dp), INTENT(in)                          :: epsilon_rho
     562              :       INTEGER, INTENT(in)                                :: param
     563              :       REAL(kind=dp), INTENT(in)                          :: scale_c_in, scale_x_in
     564              : 
     565              :       INTEGER                                            :: ii
     566              :       REAL(kind=dp) :: A_1, A_2, A_3, alpha_1_1, alpha_1_2, alpha_1_3, alpha_c, alpha_c1rhoa, &
     567              :          alpha_c1rhob, alpha_crhoa, alpha_crhob, beta_1_1, beta_1_2, beta_1_3, beta_2_1, beta_2_2, &
     568              :          beta_2_3, beta_3_1, beta_3_2, beta_3_3, beta_4_1, beta_4_2, beta_4_3, c_cab_0, c_cab_1, &
     569              :          c_cab_2, c_css_0, c_css_1, c_css_2, c_x_0, c_x_1, c_x_2, chi, chirhoa, chirhoarhoa, &
     570              :          chirhoarhob, chirhob, chirhobrhob, e_c_u_0, e_c_u_01rhoa, e_c_u_01rhob, e_c_u_0rhoa, &
     571              :          e_c_u_0rhoarhoa, e_c_u_0rhoarhob, e_c_u_0rhob, e_c_u_0rhobrhob, e_c_u_1rhoa, e_c_u_1rhob, &
     572              :          e_lsda_c_a, e_lsda_c_a1rhoa, e_lsda_c_ab, e_lsda_c_abrhoa
     573              :       REAL(kind=dp) :: e_lsda_c_abrhob, e_lsda_c_arhoa, e_lsda_c_arhoarhoa, e_lsda_c_b, &
     574              :          e_lsda_c_b1rhob, e_lsda_c_brhob, e_lsda_c_brhobrhob, e_lsda_x_a, e_lsda_x_arhoa, &
     575              :          e_lsda_x_b, e_lsda_x_brhob, epsilon_c_unif, epsilon_c_unif1rhoa, epsilon_c_unif1rhob, &
     576              :          epsilon_c_unif_a, epsilon_c_unif_a1rhoa, epsilon_c_unif_arhoa, epsilon_c_unif_b, &
     577              :          epsilon_c_unif_b1rhob, epsilon_c_unif_brhob, epsilon_c_unifrhoa, epsilon_c_unifrhob, exc, &
     578              :          exc_norm_drhoa, exc_norm_drhoa_norm_drhoa, exc_norm_drhoa_norm_drhob, exc_norm_drhob, &
     579              :          exc_norm_drhob_norm_drhob, exc_rhoa, exc_rhoa_norm_drhoa, exc_rhoa_norm_drhob
     580              :       REAL(kind=dp) :: exc_rhoa_rhoa, exc_rhoa_rhob, exc_rhob, exc_rhob_norm_drhoa, &
     581              :          exc_rhob_norm_drhob, exc_rhob_rhob, f, f1rhoa, f1rhob, frhoa, frhoarhoa, frhoarhob, &
     582              :          frhob, frhobrhob, gamma_c_ab, gamma_c_ss, gamma_x, gc_a, gc_ab, gc_abnorm_drhoa, &
     583              :          gc_abnorm_drhob, gc_abrhoa, gc_abrhob, gc_anorm_drhoa, gc_arhoa, gc_b, gc_bnorm_drhob, &
     584              :          gc_brhob, gx_a, gx_anorm_drhoa, gx_arhoa, gx_b, gx_bnorm_drhob, gx_brhob, my_norm_drhoa, &
     585              :          my_norm_drhob, my_rhoa, my_rhob, p_1, p_2, p_3, rho, rs, rs_a, rs_arhoa, rs_arhoarhoa, &
     586              :          rs_b, rs_brhob, rs_brhobrhob, rsrhoa, rsrhoarhoa, rsrhoarhob, rsrhob, rsrhobrhob, s_a
     587              :       REAL(kind=dp) :: s_a_2, s_a_21norm_drhoa, s_a_21rhoa, s_a_2norm_drhoa, &
     588              :          s_a_2norm_drhoanorm_drhoa, s_a_2rhoa, s_a_2rhoanorm_drhoa, s_a_2rhoarhoa, s_anorm_drhoa, &
     589              :          s_arhoa, s_arhoanorm_drhoa, s_arhoarhoa, s_avg_2, s_avg_21norm_drhoa, s_avg_21norm_drhob, &
     590              :          s_avg_21rhoa, s_avg_21rhob, s_avg_2norm_drhoa, s_avg_2norm_drhoanorm_drhoa, &
     591              :          s_avg_2norm_drhob, s_avg_2norm_drhobnorm_drhob, s_avg_2rhoa, s_avg_2rhoanorm_drhoa, &
     592              :          s_avg_2rhoarhoa, s_avg_2rhob, s_avg_2rhobnorm_drhob, s_avg_2rhobrhob, s_b, s_b_2, &
     593              :          s_b_21norm_drhob, s_b_21rhob, s_b_2norm_drhob, s_b_2norm_drhobnorm_drhob, s_b_2rhob, &
     594              :          s_b_2rhobnorm_drhob
     595              :       REAL(kind=dp) :: s_b_2rhobrhob, s_bnorm_drhob, s_brhob, s_brhobnorm_drhob, s_brhobrhob, &
     596              :          scale_c, scale_x, t1, t101, t1012, t1014, t102, t1047, t1049, t105, t106, t107, t108, &
     597              :          t110, t1107, t112, t113, t1136, t1152, t1157, t116, t1161, t1165, t117, t1172, t1173, &
     598              :          t1175, t12, t120, t1201, t1205, t122, t1236, t125, t127, t1270, t128, t129, t1299, t13, &
     599              :          t1321, t1324, t133, t134, t1341, t1348, t1351, t1360, t1368, t138, t1388, t139, t1394, &
     600              :          t14, t1406, t1407, t1419, t142, t1422, t1436, t1437, t144, t1440, t1451, t1452, t1455, &
     601              :          t1457, t1458, t147, t149, t15, t150, t151, t155, t156, t1571, t1589, t1590
     602              :       REAL(kind=dp) :: t1593, t16, t160, t1605, t161, t162, t163, t164, t165, t166, t167, t168, &
     603              :          t170, t1719, t173, t1738, t1753, t176, t18, t186, t188, t191, t192, t194, t196, t197, &
     604              :          t198, t199, t2, t20, t207, t208, t209, t21, t210, t212, t216, t220, t221, t222, t223, &
     605              :          t224, t228, t232, t235, t236, t237, t239, t243, t244, t245, t246, t25, t250, t256, t257, &
     606              :          t258, t26, t260, t264, t265, t266, t267, t27, t271, t277, t278, t279, t28, t285, t287, &
     607              :          t289, t29, t290, t291, t293, t294, t295, t297, t299, t3, t301, t302, t304, t31, t312, &
     608              :          t313, t314, t315, t316, t320, t324, t327, t328, t33, t336, t337, t338
     609              :       REAL(kind=dp) :: t339, t34, t344, t345, t346, t347, t35, t36, t365, t367, t37, t370, t371, &
     610              :          t374, t375, t376, t377, t396, t4, t40, t410, t42, t424, t43, t431, t433, t435, t437, &
     611              :          t438, t439, t441, t443, t445, t446, t448, t456, t457, t458, t459, t46, t460, t464, t468, &
     612              :          t471, t472, t48, t480, t484, t485, t486, t49, t50, t51, t512, t516, t539, t543, t55, &
     613              :          t555, t56, t560, t564, t568, t575, t576, t577, t579, t6, t60, t600, t601, t605, t606, &
     614              :          t608, t619, t62, t621, t626, t627, t631, t632, t633, t639, t644, t646, t647, t659, t66, &
     615              :          t661, t662, t663, t67, t671, t673, t678, t679, t68, t683, t689, t69
     616              :       REAL(kind=dp) :: t694, t7, t707, t709, t710, t711, t719, t721, t726, t727, t73, t731, t737, &
     617              :          t74, t742, t755, t757, t758, t759, t764, t765, t766, t771, t772, t78, t790, t793, t796, &
     618              :          t8, t80, t811, t818, t821, t830, t838, t84, t85, t858, t86, t864, t87, t876, t877, t889, &
     619              :          t892, t906, t907, t91, t911, t913, t914, t92, t925, t926, t929, t930, t932, t933, t94, &
     620              :          t97, t974, t976, t98, t981, t99, t993, u_c_a, u_c_a1rhoa, u_c_ab, u_c_ab1rhoa, &
     621              :          u_c_ab1rhob, u_c_abnorm_drhoa, u_c_abnorm_drhoanorm_drhoa, u_c_abnorm_drhoanorm_drhob, &
     622              :          u_c_abnorm_drhob, u_c_abnorm_drhobnorm_drhob, u_c_abrhoa
     623              :       REAL(kind=dp) :: u_c_abrhoanorm_drhoa, u_c_abrhoanorm_drhob, u_c_abrhoarhoa, u_c_abrhoarhob, &
     624              :          u_c_abrhob, u_c_abrhobnorm_drhoa, u_c_abrhobnorm_drhob, u_c_abrhobrhob, u_c_anorm_drhoa, &
     625              :          u_c_anorm_drhoanorm_drhoa, u_c_arhoa, u_c_arhoanorm_drhoa, u_c_arhoarhoa, u_c_b, &
     626              :          u_c_b1rhob, u_c_bnorm_drhob, u_c_bnorm_drhobnorm_drhob, u_c_brhob, u_c_brhobnorm_drhob, &
     627              :          u_c_brhobrhob, u_x_a, u_x_a1rhoa, u_x_anorm_drhoa, u_x_anorm_drhoanorm_drhoa, u_x_arhoa, &
     628              :          u_x_arhoanorm_drhoa, u_x_arhoarhoa, u_x_b, u_x_b1rhob, u_x_bnorm_drhob, &
     629              :          u_x_bnorm_drhobnorm_drhob, u_x_brhob, u_x_brhobnorm_drhob, u_x_brhobrhob
     630              :       REAL(kind=dp), DIMENSION(10)                       :: coeffs
     631              : 
     632            0 :       p_1 = 0.10e1_dp
     633            0 :       A_1 = 0.31091e-1_dp
     634            0 :       alpha_1_1 = 0.21370e0_dp
     635            0 :       beta_1_1 = 0.75957e1_dp
     636            0 :       beta_2_1 = 0.35876e1_dp
     637            0 :       beta_3_1 = 0.16382e1_dp
     638            0 :       beta_4_1 = 0.49294e0_dp
     639            0 :       p_2 = 0.10e1_dp
     640            0 :       A_2 = 0.15545e-1_dp
     641            0 :       alpha_1_2 = 0.20548e0_dp
     642            0 :       beta_1_2 = 0.141189e2_dp
     643            0 :       beta_2_2 = 0.61977e1_dp
     644            0 :       beta_3_2 = 0.33662e1_dp
     645            0 :       beta_4_2 = 0.62517e0_dp
     646            0 :       p_3 = 0.10e1_dp
     647            0 :       A_3 = 0.16887e-1_dp
     648            0 :       alpha_1_3 = 0.11125e0_dp
     649            0 :       beta_1_3 = 0.10357e2_dp
     650            0 :       beta_2_3 = 0.36231e1_dp
     651            0 :       beta_3_3 = 0.88026e0_dp
     652            0 :       beta_4_3 = 0.49671e0_dp
     653              : 
     654            0 :       coeffs = b97_coeffs(param)
     655            0 :       c_x_0 = coeffs(1)
     656            0 :       c_x_1 = coeffs(2)
     657            0 :       c_x_2 = coeffs(3)
     658            0 :       c_cab_0 = coeffs(4)
     659            0 :       c_cab_1 = coeffs(5)
     660            0 :       c_cab_2 = coeffs(6)
     661            0 :       c_css_0 = coeffs(7)
     662            0 :       c_css_1 = coeffs(8)
     663            0 :       c_css_2 = coeffs(9)
     664              : 
     665            0 :       scale_c = scale_c_in
     666            0 :       scale_x = scale_x_in
     667            0 :       IF (scale_x == -1.0_dp) scale_x = coeffs(10)
     668              : 
     669            0 :       gamma_x = 0.004_dp
     670            0 :       gamma_c_ss = 0.2_dp
     671            0 :       gamma_c_ab = 0.006_dp
     672              : 
     673              :       SELECT CASE (grad_deriv)
     674              :       CASE default
     675            0 :          t1 = 3**(0.1e1_dp/0.3e1_dp)
     676            0 :          t2 = 4**(0.1e1_dp/0.3e1_dp)
     677            0 :          t3 = t2**2
     678            0 :          t4 = t1*t3
     679            0 :          t6 = (0.1e1_dp/pi)**(0.1e1_dp/0.3e1_dp)
     680            0 : !$OMP        DO
     681              :          DO ii = 1, npoints
     682            0 :             my_rhoa = MAX(rhoa(ii), 0.0_dp)
     683            0 :             my_rhob = MAX(rhob(ii), 0.0_dp)
     684            0 :             rho = my_rhoa + my_rhob
     685            0 :             IF (rho > epsilon_rho) THEN
     686            0 :                my_rhoa = MAX(my_rhoa, 0.5_dp*epsilon_rho)
     687            0 :                my_rhob = MAX(my_rhob, 0.5_dp*epsilon_rho)
     688            0 :                rho = my_rhoa + my_rhob
     689            0 :                my_norm_drhoa = norm_drhoa(ii)
     690            0 :                my_norm_drhob = norm_drhob(ii)
     691            0 :                t7 = my_rhoa**(0.1e1_dp/0.3e1_dp)
     692            0 :                t8 = t7*my_rhoa
     693            0 :                e_lsda_x_a = -0.3e1_dp/0.8e1_dp*t4*t6*t8
     694            0 :                t12 = 0.1e1_dp/t8
     695            0 :                s_a = my_norm_drhoa*t12
     696            0 :                t13 = s_a**2
     697            0 :                t14 = gamma_x*t13
     698            0 :                t15 = 0.1e1_dp + t14
     699            0 :                t16 = 0.1e1_dp/t15
     700            0 :                u_x_a = t14*t16
     701            0 :                t18 = c_x_1 + u_x_a*c_x_2
     702            0 :                gx_a = c_x_0 + u_x_a*t18
     703            0 :                t20 = my_rhob**(0.1e1_dp/0.3e1_dp)
     704            0 :                t21 = t20*my_rhob
     705            0 :                e_lsda_x_b = -0.3e1_dp/0.8e1_dp*t4*t6*t21
     706            0 :                t25 = 0.1e1_dp/t21
     707            0 :                s_b = my_norm_drhob*t25
     708            0 :                t26 = s_b**2
     709            0 :                t27 = gamma_x*t26
     710            0 :                t28 = 0.1e1_dp + t27
     711            0 :                t29 = 0.1e1_dp/t28
     712            0 :                u_x_b = t27*t29
     713            0 :                t31 = c_x_1 + u_x_b*c_x_2
     714            0 :                gx_b = c_x_0 + u_x_b*t31
     715            0 :                t33 = my_rhoa - my_rhob
     716            0 :                t34 = 0.1e1_dp/rho
     717            0 :                chi = t33*t34
     718            0 :                t35 = 0.1e1_dp/pi
     719            0 :                t36 = t35*t34
     720            0 :                t37 = t36**(0.1e1_dp/0.3e1_dp)
     721            0 :                rs = t4*t37/0.4e1_dp
     722            0 :                t40 = 0.1e1_dp + alpha_1_1*rs
     723            0 :                t42 = 0.1e1_dp/A_1
     724            0 :                t43 = SQRT(rs)
     725            0 :                t46 = t43*rs
     726            0 :                t48 = p_1 + 0.1e1_dp
     727            0 :                t49 = rs**t48
     728            0 :                t50 = beta_4_1*t49
     729            0 :                t51 = beta_1_1*t43 + beta_2_1*rs + beta_3_1*t46 + t50
     730            0 :                t55 = 0.1e1_dp + t42/t51/0.2e1_dp
     731            0 :                t56 = LOG(t55)
     732            0 :                e_c_u_0 = -0.2e1_dp*A_1*t40*t56
     733            0 :                t60 = 0.1e1_dp + alpha_1_2*rs
     734            0 :                t62 = 0.1e1_dp/A_2
     735            0 :                t66 = p_2 + 0.1e1_dp
     736            0 :                t67 = rs**t66
     737            0 :                t68 = beta_4_2*t67
     738            0 :                t69 = beta_1_2*t43 + beta_2_2*rs + beta_3_2*t46 + t68
     739            0 :                t73 = 0.1e1_dp + t62/t69/0.2e1_dp
     740            0 :                t74 = LOG(t73)
     741            0 :                t78 = 0.1e1_dp + alpha_1_3*rs
     742            0 :                t80 = 0.1e1_dp/A_3
     743            0 :                t84 = p_3 + 0.1e1_dp
     744            0 :                t85 = rs**t84
     745            0 :                t86 = beta_4_3*t85
     746            0 :                t87 = beta_1_3*t43 + beta_2_3*rs + beta_3_3*t46 + t86
     747            0 :                t91 = 0.1e1_dp + t80/t87/0.2e1_dp
     748            0 :                t92 = LOG(t91)
     749            0 :                alpha_c = 0.2e1_dp*A_3*t78*t92
     750            0 :                t94 = 2**(0.1e1_dp/0.3e1_dp)
     751            0 :                t97 = 1/(2*t94 - 2)
     752            0 :                t98 = 0.1e1_dp + chi
     753            0 :                t99 = t98**(0.1e1_dp/0.3e1_dp)
     754            0 :                t101 = 0.1e1_dp - chi
     755            0 :                t102 = t101**(0.1e1_dp/0.3e1_dp)
     756            0 :                f = (t99*t98 + t102*t101 - 0.2e1_dp)*t97
     757            0 :                t105 = alpha_c*f
     758            0 :                t106 = 0.9e1_dp/0.8e1_dp/t97
     759            0 :                t107 = chi**2
     760            0 :                t108 = t107**2
     761            0 :                t110 = t106*(0.1e1_dp - t108)
     762            0 :                t112 = -0.2e1_dp*A_2*t60*t74 - e_c_u_0
     763            0 :                t113 = t112*f
     764            0 :                epsilon_c_unif = e_c_u_0 + t105*t110 + t113*t108
     765            0 :                t116 = t35/my_rhoa
     766            0 :                t117 = t116**(0.1e1_dp/0.3e1_dp)
     767            0 :                rs_a = t4*t117/0.4e1_dp
     768            0 :                t120 = 0.1e1_dp + alpha_1_2*rs_a
     769            0 :                t122 = SQRT(rs_a)
     770            0 :                t125 = t122*rs_a
     771            0 :                t127 = rs_a**t66
     772            0 :                t128 = beta_4_2*t127
     773            0 :                t129 = beta_1_2*t122 + beta_2_2*rs_a + beta_3_2*t125 + t128
     774            0 :                t133 = 0.1e1_dp + t62/t129/0.2e1_dp
     775            0 :                t134 = LOG(t133)
     776            0 :                epsilon_c_unif_a = -0.2e1_dp*A_2*t120*t134
     777            0 :                t138 = t35/my_rhob
     778            0 :                t139 = t138**(0.1e1_dp/0.3e1_dp)
     779            0 :                rs_b = t4*t139/0.4e1_dp
     780            0 :                t142 = 0.1e1_dp + alpha_1_2*rs_b
     781            0 :                t144 = SQRT(rs_b)
     782            0 :                t147 = t144*rs_b
     783            0 :                t149 = rs_b**t66
     784            0 :                t150 = beta_4_2*t149
     785            0 :                t151 = beta_1_2*t144 + beta_2_2*rs_b + beta_3_2*t147 + t150
     786            0 :                t155 = 0.1e1_dp + t62/t151/0.2e1_dp
     787            0 :                t156 = LOG(t155)
     788            0 :                epsilon_c_unif_b = -0.2e1_dp*A_2*t142*t156
     789            0 :                s_a_2 = t13
     790            0 :                s_b_2 = t26
     791            0 :                s_avg_2 = s_a_2/0.2e1_dp + s_b_2/0.2e1_dp
     792            0 :                e_lsda_c_a = epsilon_c_unif_a*my_rhoa
     793            0 :                e_lsda_c_b = epsilon_c_unif_b*my_rhob
     794            0 :                t160 = gamma_c_ab*s_avg_2
     795            0 :                t161 = 0.1e1_dp + t160
     796            0 :                t162 = 0.1e1_dp/t161
     797            0 :                u_c_ab = t160*t162
     798            0 :                t163 = gamma_c_ss*s_a_2
     799            0 :                t164 = 0.1e1_dp + t163
     800            0 :                t165 = 0.1e1_dp/t164
     801            0 :                u_c_a = t163*t165
     802            0 :                t166 = gamma_c_ss*s_b_2
     803            0 :                t167 = 0.1e1_dp + t166
     804            0 :                t168 = 0.1e1_dp/t167
     805            0 :                u_c_b = t166*t168
     806            0 :                e_lsda_c_ab = epsilon_c_unif*rho - e_lsda_c_a - e_lsda_c_b
     807            0 :                t170 = c_cab_1 + u_c_ab*c_cab_2
     808            0 :                gc_ab = c_cab_0 + u_c_ab*t170
     809            0 :                t173 = c_css_1 + u_c_a*c_css_2
     810            0 :                gc_a = c_css_0 + u_c_a*t173
     811            0 :                t176 = c_css_1 + u_c_b*c_css_2
     812            0 :                gc_b = c_css_0 + u_c_b*t176
     813              : 
     814            0 :                IF (grad_deriv >= 0) THEN
     815              :                   exc = scale_x*(e_lsda_x_a*gx_a + e_lsda_x_b*gx_b) + scale_c &
     816            0 :                         *(e_lsda_c_ab*gc_ab + e_lsda_c_a*gc_a + e_lsda_c_b*gc_b)
     817            0 :                   e_0(ii) = e_0(ii) + exc
     818              :                END IF
     819              : 
     820            0 :                IF (grad_deriv /= 0) THEN
     821              : 
     822            0 :                   e_lsda_x_arhoa = -t4*t6*t7/0.2e1_dp
     823            0 :                   t186 = my_rhoa**2
     824            0 :                   t188 = 0.1e1_dp/t7/t186
     825            0 :                   s_arhoa = -0.4e1_dp/0.3e1_dp*my_norm_drhoa*t188
     826            0 :                   t191 = gamma_x*s_a
     827            0 :                   t192 = t16*s_arhoa
     828            0 :                   t194 = gamma_x**2
     829            0 :                   t196 = t194*s_a_2*s_a
     830            0 :                   t197 = t15**2
     831            0 :                   t198 = 0.1e1_dp/t197
     832            0 :                   t199 = t198*s_arhoa
     833            0 :                   u_x_arhoa = 0.2e1_dp*t191*t192 - 0.2e1_dp*t196*t199
     834            0 :                   gx_arhoa = u_x_arhoa*t18 + u_x_a*u_x_arhoa*c_x_2
     835            0 :                   t207 = rho**2
     836            0 :                   t208 = 0.1e1_dp/t207
     837            0 :                   t209 = t33*t208
     838            0 :                   chirhoa = t34 - t209
     839            0 :                   t210 = t37**2
     840            0 :                   t212 = 0.1e1_dp/t210*t35
     841            0 :                   rsrhoa = -t4*t212*t208/0.12e2_dp
     842            0 :                   t216 = A_1*alpha_1_1
     843            0 :                   t220 = t51**2
     844            0 :                   t221 = 0.1e1_dp/t220
     845            0 :                   t222 = t40*t221
     846            0 :                   t223 = 0.1e1_dp/t43
     847            0 :                   t224 = beta_1_1*t223
     848            0 :                   t228 = beta_3_1*t43
     849            0 :                   t232 = 0.1e1_dp/rs
     850              :                   t235 = t224*rsrhoa/0.2e1_dp + beta_2_1*rsrhoa + 0.3e1_dp/ &
     851            0 :                          0.2e1_dp*t228*rsrhoa + t50*t48*rsrhoa*t232
     852            0 :                   t236 = 0.1e1_dp/t55
     853            0 :                   t237 = t235*t236
     854            0 :                   e_c_u_0rhoa = -0.2e1_dp*t216*rsrhoa*t56 + t222*t237
     855            0 :                   t239 = A_2*alpha_1_2
     856            0 :                   t243 = t69**2
     857            0 :                   t244 = 0.1e1_dp/t243
     858            0 :                   t245 = t60*t244
     859            0 :                   t246 = beta_1_2*t223
     860            0 :                   t250 = beta_3_2*t43
     861              :                   t256 = t246*rsrhoa/0.2e1_dp + beta_2_2*rsrhoa + 0.3e1_dp/ &
     862            0 :                          0.2e1_dp*t250*rsrhoa + t68*t66*rsrhoa*t232
     863            0 :                   t257 = 0.1e1_dp/t73
     864            0 :                   t258 = t256*t257
     865            0 :                   e_c_u_1rhoa = -0.2e1_dp*t239*rsrhoa*t74 + t245*t258
     866            0 :                   t260 = A_3*alpha_1_3
     867            0 :                   t264 = t87**2
     868            0 :                   t265 = 0.1e1_dp/t264
     869            0 :                   t266 = t78*t265
     870            0 :                   t267 = beta_1_3*t223
     871            0 :                   t271 = beta_3_3*t43
     872              :                   t277 = t267*rsrhoa/0.2e1_dp + beta_2_3*rsrhoa + 0.3e1_dp/ &
     873            0 :                          0.2e1_dp*t271*rsrhoa + t86*t84*rsrhoa*t232
     874            0 :                   t278 = 0.1e1_dp/t91
     875            0 :                   t279 = t277*t278
     876            0 :                   alpha_crhoa = 0.2e1_dp*t260*rsrhoa*t92 - t266*t279
     877              :                   frhoa = (0.4e1_dp/0.3e1_dp*t99*chirhoa - 0.4e1_dp/0.3e1_dp &
     878            0 :                            *t102*chirhoa)*t97
     879            0 :                   t285 = alpha_crhoa*f
     880            0 :                   t287 = alpha_c*frhoa
     881            0 :                   t289 = t107*chi
     882            0 :                   t290 = t106*t289
     883            0 :                   t291 = t290*chirhoa
     884            0 :                   t293 = 0.4e1_dp*t105*t291
     885            0 :                   t294 = e_c_u_1rhoa - e_c_u_0rhoa
     886            0 :                   t295 = t294*f
     887            0 :                   t297 = t112*frhoa
     888            0 :                   t299 = t289*chirhoa
     889            0 :                   t301 = 0.4e1_dp*t113*t299
     890              :                   epsilon_c_unifrhoa = e_c_u_0rhoa + t285*t110 + t287*t110 - &
     891            0 :                                        t293 + t295*t108 + t297*t108 + t301
     892            0 :                   t302 = t117**2
     893            0 :                   t304 = 0.1e1_dp/t302*t35
     894            0 :                   rs_arhoa = -t4*t304/t186/0.12e2_dp
     895            0 :                   t312 = t129**2
     896            0 :                   t313 = 0.1e1_dp/t312
     897            0 :                   t314 = t120*t313
     898            0 :                   t315 = 0.1e1_dp/t122
     899            0 :                   t316 = beta_1_2*t315
     900            0 :                   t320 = beta_3_2*t122
     901            0 :                   t324 = 0.1e1_dp/rs_a
     902              :                   t327 = t316*rs_arhoa/0.2e1_dp + beta_2_2*rs_arhoa + 0.3e1_dp &
     903            0 :                          /0.2e1_dp*t320*rs_arhoa + t128*t66*rs_arhoa*t324
     904            0 :                   t328 = 0.1e1_dp/t133
     905              :                   epsilon_c_unif_arhoa = -0.2e1_dp*t239*rs_arhoa*t134 + t314* &
     906            0 :                                          t327*t328
     907            0 :                   s_a_2rhoa = 0.2e1_dp*s_a*s_arhoa
     908            0 :                   s_avg_2rhoa = s_a_2rhoa/0.2e1_dp
     909            0 :                   e_lsda_c_arhoa = epsilon_c_unif_arhoa*my_rhoa + epsilon_c_unif_a
     910            0 :                   t336 = gamma_c_ab**2
     911            0 :                   t337 = t336*s_avg_2
     912            0 :                   t338 = t161**2
     913            0 :                   t339 = 0.1e1_dp/t338
     914            0 :                   u_c_abrhoa = gamma_c_ab*s_avg_2rhoa*t162 - t337*t339*s_avg_2rhoa
     915            0 :                   t344 = gamma_c_ss**2
     916            0 :                   t345 = t344*s_a_2
     917            0 :                   t346 = t164**2
     918            0 :                   t347 = 0.1e1_dp/t346
     919            0 :                   u_c_arhoa = gamma_c_ss*s_a_2rhoa*t165 - t345*t347*s_a_2rhoa
     920              :                   e_lsda_c_abrhoa = epsilon_c_unifrhoa*rho + epsilon_c_unif - &
     921            0 :                                     e_lsda_c_arhoa
     922            0 :                   gc_abrhoa = u_c_abrhoa*t170 + u_c_ab*u_c_abrhoa*c_cab_2
     923            0 :                   gc_arhoa = u_c_arhoa*t173 + u_c_a*u_c_arhoa*c_css_2
     924              : 
     925            0 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
     926              :                      exc_rhoa = scale_x*(e_lsda_x_arhoa*gx_a + e_lsda_x_a* &
     927              :                                          gx_arhoa) + scale_c*(e_lsda_c_abrhoa*gc_ab + e_lsda_c_ab* &
     928            0 :                                                               gc_abrhoa + e_lsda_c_arhoa*gc_a + e_lsda_c_a*gc_arhoa)
     929            0 :                      e_ra(ii) = e_ra(ii) + exc_rhoa
     930              :                   END IF
     931              : 
     932            0 :                   e_lsda_x_brhob = -t4*t6*t20/0.2e1_dp
     933            0 :                   t365 = my_rhob**2
     934            0 :                   t367 = 0.1e1_dp/t20/t365
     935            0 :                   s_brhob = -0.4e1_dp/0.3e1_dp*my_norm_drhob*t367
     936            0 :                   t370 = gamma_x*s_b
     937            0 :                   t371 = t29*s_brhob
     938            0 :                   t374 = t194*s_b_2*s_b
     939            0 :                   t375 = t28**2
     940            0 :                   t376 = 0.1e1_dp/t375
     941            0 :                   t377 = t376*s_brhob
     942            0 :                   u_x_brhob = 0.2e1_dp*t370*t371 - 0.2e1_dp*t374*t377
     943            0 :                   gx_brhob = u_x_brhob*t31 + u_x_b*u_x_brhob*c_x_2
     944            0 :                   chirhob = -t34 - t209
     945            0 :                   rsrhob = rsrhoa
     946              :                   t396 = t224*rsrhob/0.2e1_dp + beta_2_1*rsrhob + 0.3e1_dp/ &
     947            0 :                          0.2e1_dp*t228*rsrhob + t50*t48*rsrhob*t232
     948            0 :                   e_c_u_0rhob = -0.2e1_dp*t216*rsrhob*t56 + t222*t396*t236
     949              :                   t410 = t246*rsrhob/0.2e1_dp + beta_2_2*rsrhob + 0.3e1_dp/ &
     950            0 :                          0.2e1_dp*t250*rsrhob + t68*t66*rsrhob*t232
     951            0 :                   e_c_u_1rhob = -0.2e1_dp*t239*rsrhob*t74 + t245*t410*t257
     952              :                   t424 = t267*rsrhob/0.2e1_dp + beta_2_3*rsrhob + 0.3e1_dp/ &
     953            0 :                          0.2e1_dp*t271*rsrhob + t86*t84*rsrhob*t232
     954            0 :                   alpha_crhob = 0.2e1_dp*t260*rsrhob*t92 - t266*t424*t278
     955              :                   frhob = (0.4e1_dp/0.3e1_dp*t99*chirhob - 0.4e1_dp/0.3e1_dp &
     956            0 :                            *t102*chirhob)*t97
     957            0 :                   t431 = alpha_crhob*f
     958            0 :                   t433 = alpha_c*frhob
     959            0 :                   t435 = t290*chirhob
     960            0 :                   t437 = 0.4e1_dp*t105*t435
     961            0 :                   t438 = e_c_u_1rhob - e_c_u_0rhob
     962            0 :                   t439 = t438*f
     963            0 :                   t441 = t112*frhob
     964            0 :                   t443 = t289*chirhob
     965            0 :                   t445 = 0.4e1_dp*t113*t443
     966              :                   epsilon_c_unifrhob = e_c_u_0rhob + t431*t110 + t433*t110 - &
     967            0 :                                        t437 + t439*t108 + t441*t108 + t445
     968            0 :                   t446 = t139**2
     969            0 :                   t448 = 0.1e1_dp/t446*t35
     970            0 :                   rs_brhob = -t4*t448/t365/0.12e2_dp
     971            0 :                   t456 = t151**2
     972            0 :                   t457 = 0.1e1_dp/t456
     973            0 :                   t458 = t142*t457
     974            0 :                   t459 = 0.1e1_dp/t144
     975            0 :                   t460 = beta_1_2*t459
     976            0 :                   t464 = beta_3_2*t144
     977            0 :                   t468 = 0.1e1_dp/rs_b
     978              :                   t471 = t460*rs_brhob/0.2e1_dp + beta_2_2*rs_brhob + 0.3e1_dp &
     979            0 :                          /0.2e1_dp*rs_brhob*t464 + t150*t66*rs_brhob*t468
     980            0 :                   t472 = 0.1e1_dp/t155
     981              :                   epsilon_c_unif_brhob = -0.2e1_dp*t239*rs_brhob*t156 + t458* &
     982            0 :                                          t471*t472
     983            0 :                   s_b_2rhob = 0.2e1_dp*s_b*s_brhob
     984            0 :                   s_avg_2rhob = s_b_2rhob/0.2e1_dp
     985            0 :                   e_lsda_c_brhob = epsilon_c_unif_brhob*my_rhob + epsilon_c_unif_b
     986            0 :                   t480 = t339*s_avg_2rhob
     987            0 :                   u_c_abrhob = gamma_c_ab*s_avg_2rhob*t162 - t337*t480
     988            0 :                   t484 = t344*s_b_2
     989            0 :                   t485 = t167**2
     990            0 :                   t486 = 0.1e1_dp/t485
     991            0 :                   u_c_brhob = gamma_c_ss*s_b_2rhob*t168 - t484*t486*s_b_2rhob
     992              :                   e_lsda_c_abrhob = epsilon_c_unifrhob*rho + epsilon_c_unif - &
     993            0 :                                     e_lsda_c_brhob
     994            0 :                   gc_abrhob = u_c_abrhob*t170 + u_c_ab*u_c_abrhob*c_cab_2
     995            0 :                   gc_brhob = u_c_brhob*t176 + u_c_b*u_c_brhob*c_css_2
     996              : 
     997            0 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
     998              :                      exc_rhob = scale_x*(e_lsda_x_brhob*gx_b + e_lsda_x_b* &
     999              :                                          gx_brhob) + scale_c*(e_lsda_c_abrhob*gc_ab + e_lsda_c_ab* &
    1000            0 :                                                               gc_abrhob + e_lsda_c_brhob*gc_b + e_lsda_c_b*gc_brhob)
    1001            0 :                      e_rb(ii) = e_rb(ii) + exc_rhob
    1002              :                   END IF
    1003              : 
    1004            0 :                   s_anorm_drhoa = t12
    1005              :                   u_x_anorm_drhoa = 0.2e1_dp*t191*t16*s_anorm_drhoa - 0.2e1_dp &
    1006            0 :                                     *t196*t198*s_anorm_drhoa
    1007            0 :                   gx_anorm_drhoa = u_x_anorm_drhoa*t18 + u_x_a*u_x_anorm_drhoa*c_x_2
    1008            0 :                   s_a_2norm_drhoa = 0.2e1_dp*s_a*s_anorm_drhoa
    1009            0 :                   s_avg_2norm_drhoa = s_a_2norm_drhoa/0.2e1_dp
    1010            0 :                   t512 = t339*s_avg_2norm_drhoa
    1011            0 :                   u_c_abnorm_drhoa = gamma_c_ab*s_avg_2norm_drhoa*t162 - t337*t512
    1012            0 :                   t516 = t347*s_a_2norm_drhoa
    1013            0 :                   u_c_anorm_drhoa = gamma_c_ss*s_a_2norm_drhoa*t165 - t345*t516
    1014              :                   gc_abnorm_drhoa = u_c_abnorm_drhoa*t170 + u_c_ab* &
    1015            0 :                                     u_c_abnorm_drhoa*c_cab_2
    1016              :                   gc_anorm_drhoa = u_c_anorm_drhoa*t173 + u_c_a*u_c_anorm_drhoa &
    1017            0 :                                    *c_css_2
    1018              : 
    1019            0 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    1020              :                      exc_norm_drhoa = scale_x*e_lsda_x_a*gx_anorm_drhoa + scale_c* &
    1021            0 :                                       (e_lsda_c_ab*gc_abnorm_drhoa + e_lsda_c_a*gc_anorm_drhoa)
    1022            0 :                      e_ndra(ii) = e_ndra(ii) + exc_norm_drhoa
    1023              :                   END IF
    1024              : 
    1025            0 :                   s_bnorm_drhob = t25
    1026              :                   u_x_bnorm_drhob = 0.2e1_dp*t370*t29*s_bnorm_drhob - 0.2e1_dp &
    1027            0 :                                     *t374*t376*s_bnorm_drhob
    1028            0 :                   gx_bnorm_drhob = u_x_bnorm_drhob*t31 + u_x_b*u_x_bnorm_drhob*c_x_2
    1029            0 :                   s_b_2norm_drhob = 0.2e1_dp*s_b*s_bnorm_drhob
    1030            0 :                   s_avg_2norm_drhob = s_b_2norm_drhob/0.2e1_dp
    1031            0 :                   t539 = t339*s_avg_2norm_drhob
    1032            0 :                   u_c_abnorm_drhob = gamma_c_ab*s_avg_2norm_drhob*t162 - t337*t539
    1033            0 :                   t543 = t486*s_b_2norm_drhob
    1034            0 :                   u_c_bnorm_drhob = gamma_c_ss*s_b_2norm_drhob*t168 - t484*t543
    1035              :                   gc_abnorm_drhob = u_c_abnorm_drhob*t170 + u_c_ab* &
    1036            0 :                                     u_c_abnorm_drhob*c_cab_2
    1037              :                   gc_bnorm_drhob = u_c_bnorm_drhob*t176 + u_c_b*u_c_bnorm_drhob &
    1038            0 :                                    *c_css_2
    1039              : 
    1040            0 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    1041              :                      exc_norm_drhob = scale_x*e_lsda_x_b*gx_bnorm_drhob + scale_c* &
    1042            0 :                                       (e_lsda_c_ab*gc_abnorm_drhob + e_lsda_c_b*gc_bnorm_drhob)
    1043            0 :                      e_ndrb(ii) = e_ndrb(ii) + exc_norm_drhob
    1044              :                   END IF
    1045              : 
    1046            0 :                   IF (grad_deriv > 1 .OR. grad_deriv < -1) THEN
    1047            0 :                      t555 = t7**2
    1048            0 :                      t560 = t186*my_rhoa
    1049            0 :                      s_arhoarhoa = 0.28e2_dp/0.9e1_dp*my_norm_drhoa/t7/t560
    1050            0 :                      t564 = s_arhoa**2
    1051            0 :                      t568 = t194*s_a_2
    1052            0 :                      t575 = t194*gamma_x
    1053            0 :                      t576 = s_a_2**2
    1054            0 :                      t577 = t575*t576
    1055            0 :                      t579 = 0.1e1_dp/t197/t15
    1056              :                      u_x_arhoarhoa = 0.2e1_dp*gamma_x*t564*t16 - 0.10e2_dp*t568 &
    1057              :                                      *t198*t564 + 0.2e1_dp*t191*t16*s_arhoarhoa + 0.8e1_dp* &
    1058            0 :                                      t577*t579*t564 - 0.2e1_dp*t196*t198*s_arhoarhoa
    1059            0 :                      u_x_a1rhoa = u_x_arhoa
    1060            0 :                      t600 = 0.1e1_dp/t207/rho
    1061            0 :                      t601 = t33*t600
    1062            0 :                      chirhoarhoa = -0.2e1_dp*t208 + 0.2e1_dp*t601
    1063            0 :                      t605 = 0.3141592654e1_dp**2
    1064            0 :                      t606 = 0.1e1_dp/t605
    1065            0 :                      t608 = t207**2
    1066              :                      rsrhoarhoa = -t4/t210/t36*t606/t608/0.18e2_dp + &
    1067            0 :                                   t4*t212*t600/0.6e1_dp
    1068            0 :                      t619 = alpha_1_1*rsrhoa
    1069            0 :                      t621 = t221*t235*t236
    1070            0 :                      t626 = t40/t220/t51
    1071            0 :                      t627 = t235**2
    1072            0 :                      t631 = 0.1e1_dp/t46
    1073            0 :                      t632 = beta_1_1*t631
    1074            0 :                      t633 = rsrhoa**2
    1075            0 :                      t639 = beta_3_1*t223
    1076            0 :                      t644 = t48**2
    1077            0 :                      t646 = rs**2
    1078            0 :                      t647 = 0.1e1_dp/t646
    1079            0 :                      t659 = t220**2
    1080            0 :                      t661 = t40/t659
    1081            0 :                      t662 = t55**2
    1082            0 :                      t663 = 0.1e1_dp/t662
    1083              :                      e_c_u_0rhoarhoa = -0.2e1_dp*t216*rsrhoarhoa*t56 + 0.2e1_dp* &
    1084              :                                        t619*t621 - 0.2e1_dp*t626*t627*t236 + t222*(-t632*t633 &
    1085              :                                                                       /0.4e1_dp + t224*rsrhoarhoa/0.2e1_dp + beta_2_1*rsrhoarhoa + &
    1086              :                                                                              0.3e1_dp/0.4e1_dp*t639*t633 + 0.3e1_dp/0.2e1_dp*t228* &
    1087              :                                                                              rsrhoarhoa + t50*t644*t633*t647 + t50*t48*rsrhoarhoa* &
    1088              :                                                                               t232 - t50*t48*t633*t647)*t236 + t661*t627*t663*t42/ &
    1089            0 :                                        0.2e1_dp
    1090            0 :                      e_c_u_01rhoa = e_c_u_0rhoa
    1091            0 :                      t671 = alpha_1_2*rsrhoa
    1092            0 :                      t673 = t244*t256*t257
    1093            0 :                      t678 = t60/t243/t69
    1094            0 :                      t679 = t256**2
    1095            0 :                      t683 = beta_1_2*t631
    1096            0 :                      t689 = beta_3_2*t223
    1097            0 :                      t694 = t66**2
    1098            0 :                      t707 = t243**2
    1099            0 :                      t709 = t60/t707
    1100            0 :                      t710 = t73**2
    1101            0 :                      t711 = 0.1e1_dp/t710
    1102            0 :                      t719 = alpha_1_3*rsrhoa
    1103            0 :                      t721 = t265*t277*t278
    1104            0 :                      t726 = t78/t264/t87
    1105            0 :                      t727 = t277**2
    1106            0 :                      t731 = beta_1_3*t631
    1107            0 :                      t737 = beta_3_3*t223
    1108            0 :                      t742 = t84**2
    1109            0 :                      t755 = t264**2
    1110            0 :                      t757 = t78/t755
    1111            0 :                      t758 = t91**2
    1112            0 :                      t759 = 0.1e1_dp/t758
    1113            0 :                      alpha_c1rhoa = alpha_crhoa
    1114            0 :                      t764 = t99**2
    1115            0 :                      t765 = 0.1e1_dp/t764
    1116            0 :                      t766 = chirhoa**2
    1117            0 :                      t771 = t102**2
    1118            0 :                      t772 = 0.1e1_dp/t771
    1119              :                      frhoarhoa = (0.4e1_dp/0.9e1_dp*t765*t766 + 0.4e1_dp/ &
    1120              :                                   0.3e1_dp*t99*chirhoarhoa + 0.4e1_dp/0.9e1_dp*t772*t766 - &
    1121            0 :                                   0.4e1_dp/0.3e1_dp*t102*chirhoarhoa)*t97
    1122            0 :                      f1rhoa = frhoa
    1123            0 :                      t790 = alpha_c1rhoa*f
    1124            0 :                      t793 = alpha_c*f1rhoa
    1125            0 :                      t796 = t106*t107
    1126            0 :                      t811 = e_c_u_1rhoa - e_c_u_01rhoa
    1127            0 :                      t818 = t811*f
    1128            0 :                      t821 = t112*f1rhoa
    1129              :                      t830 = -0.4e1_dp*t105*t290*chirhoarhoa + (-0.2e1_dp*t239* &
    1130              :                                                                rsrhoarhoa*t74 + 0.2e1_dp*t671*t673 - 0.2e1_dp*t678*t679 &
    1131              :                                                                *t257 + t245*(-t683*t633/0.4e1_dp + t246*rsrhoarhoa/ &
    1132              :                                                                       0.2e1_dp + beta_2_2*rsrhoarhoa + 0.3e1_dp/0.4e1_dp*t689*t633 &
    1133              :                                                                              + 0.3e1_dp/0.2e1_dp*t250*rsrhoarhoa + t68*t694*t633* &
    1134              :                                                                              t647 + t68*t66*rsrhoarhoa*t232 - t68*t66*t633*t647)* &
    1135              :                                                                t257 + t709*t679*t711*t62/0.2e1_dp - e_c_u_0rhoarhoa)*f* &
    1136              :                             t108 + t294*f1rhoa*t108 + 0.4e1_dp*t295*t299 + t811*frhoa &
    1137              :                             *t108 + t112*frhoarhoa*t108 + 0.4e1_dp*t297*t299 + 0.4e1_dp &
    1138              :                             *t818*t299 + 0.4e1_dp*t821*t299 + 0.12e2_dp*t113*t107* &
    1139            0 :                             t766 + 0.4e1_dp*t113*t289*chirhoarhoa
    1140              :                      epsilon_c_unif1rhoa = e_c_u_01rhoa + t790*t110 + t793*t110 - &
    1141            0 :                                            t293 + t818*t108 + t821*t108 + t301
    1142            0 :                      t838 = t186**2
    1143              :                      rs_arhoarhoa = -t4/t302/t116*t606/t838/0.18e2_dp + &
    1144            0 :                                     t4*t304/t560/0.6e1_dp
    1145            0 :                      t858 = t327**2
    1146            0 :                      t864 = rs_arhoa**2
    1147            0 :                      t876 = rs_a**2
    1148            0 :                      t877 = 0.1e1_dp/t876
    1149            0 :                      t889 = t312**2
    1150            0 :                      t892 = t133**2
    1151            0 :                      epsilon_c_unif_a1rhoa = epsilon_c_unif_arhoa
    1152            0 :                      s_a_2rhoarhoa = 0.2e1_dp*t564 + 0.2e1_dp*s_a*s_arhoarhoa
    1153            0 :                      s_a_21rhoa = s_a_2rhoa
    1154            0 :                      s_avg_2rhoarhoa = s_a_2rhoarhoa/0.2e1_dp
    1155            0 :                      s_avg_21rhoa = s_a_21rhoa/0.2e1_dp
    1156              :                      e_lsda_c_arhoarhoa = (-0.2e1_dp*t239*rs_arhoarhoa*t134 + &
    1157              :                                            0.2e1_dp*alpha_1_2*rs_arhoa*t313*t327*t328 - 0.2e1_dp* &
    1158              :                                            t120/t312/t129*t858*t328 + t314*(-beta_1_2/t125*t864/ &
    1159              :                                                                      0.4e1_dp + t316*rs_arhoarhoa/0.2e1_dp + beta_2_2*rs_arhoarhoa &
    1160              :                                                                             + 0.3e1_dp/0.4e1_dp*beta_3_2*t315*t864 + 0.3e1_dp/ &
    1161              :                                                                           0.2e1_dp*t320*rs_arhoarhoa + t128*t694*t864*t877 + t128* &
    1162              :                                                                            t66*rs_arhoarhoa*t324 - t128*t66*t864*t877)*t328 + t120 &
    1163              :                                            /t889*t858/t892*t62/0.2e1_dp)*my_rhoa + epsilon_c_unif_arhoa &
    1164            0 :                                           + epsilon_c_unif_a1rhoa
    1165            0 :                      e_lsda_c_a1rhoa = epsilon_c_unif_a1rhoa*my_rhoa + epsilon_c_unif_a
    1166            0 :                      t906 = t336*s_avg_2rhoa
    1167            0 :                      t907 = t339*s_avg_21rhoa
    1168            0 :                      t911 = t336*gamma_c_ab*s_avg_2
    1169            0 :                      t913 = 0.1e1_dp/t338/t161
    1170            0 :                      t914 = t913*s_avg_2rhoa
    1171              :                      u_c_abrhoarhoa = gamma_c_ab*s_avg_2rhoarhoa*t162 - 0.2e1_dp* &
    1172              :                                       t906*t907 + 0.2e1_dp*t911*t914*s_avg_21rhoa - t337*t339* &
    1173            0 :                                       s_avg_2rhoarhoa
    1174            0 :                      u_c_ab1rhoa = gamma_c_ab*s_avg_21rhoa*t162 - t337*t907
    1175            0 :                      t925 = t344*s_a_2rhoa
    1176            0 :                      t926 = t347*s_a_21rhoa
    1177            0 :                      t929 = t344*gamma_c_ss
    1178            0 :                      t930 = t929*s_a_2
    1179            0 :                      t932 = 0.1e1_dp/t346/t164
    1180            0 :                      t933 = t932*s_a_2rhoa
    1181              :                      u_c_arhoarhoa = gamma_c_ss*s_a_2rhoarhoa*t165 - 0.2e1_dp* &
    1182              :                                      t925*t926 + 0.2e1_dp*t930*t933*s_a_21rhoa - t345*t347* &
    1183            0 :                                      s_a_2rhoarhoa
    1184            0 :                      u_c_a1rhoa = gamma_c_ss*s_a_21rhoa*t165 - t345*t926
    1185            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1186              :                         exc_rhoa_rhoa = scale_x*(-t4*t6/t555*gx_a/0.6e1_dp &
    1187              :                                                  + e_lsda_x_arhoa*(u_x_a1rhoa*t18 + u_x_a*u_x_a1rhoa*c_x_2) &
    1188              :                                                  + e_lsda_x_arhoa*gx_arhoa + e_lsda_x_a*(u_x_arhoarhoa*t18 + &
    1189              :                                                                         0.2e1_dp*u_x_arhoa*u_x_a1rhoa*c_x_2 + u_x_a*u_x_arhoarhoa* &
    1190              :                                                                             c_x_2)) + scale_c*(((e_c_u_0rhoarhoa + (0.2e1_dp*t260* &
    1191              :                                                                          rsrhoarhoa*t92 - 0.2e1_dp*t719*t721 + 0.2e1_dp*t726*t727* &
    1192              :                                                                                t278 - t266*(-t731*t633/0.4e1_dp + t267*rsrhoarhoa/ &
    1193              :                                                                       0.2e1_dp + beta_2_3*rsrhoarhoa + 0.3e1_dp/0.4e1_dp*t737*t633 &
    1194              :                                                                               + 0.3e1_dp/0.2e1_dp*t271*rsrhoarhoa + t86*t742*t633* &
    1195              :                                                                               t647 + t86*t84*rsrhoarhoa*t232 - t86*t84*t633*t647)* &
    1196              :                                                                           t278 - t757*t727*t759*t80/0.2e1_dp)*f*t110 + alpha_crhoa &
    1197              :                                                                            *f1rhoa*t110 - 0.4e1_dp*t285*t291 + alpha_c1rhoa*frhoa* &
    1198              :                                                                               t110 + alpha_c*frhoarhoa*t110 - 0.4e1_dp*t287*t291 - &
    1199              :                                                                          0.4e1_dp*t790*t291 - 0.4e1_dp*t793*t291 - 0.12e2_dp*t105* &
    1200              :                                                                                       t796*t766 + t830)*rho + epsilon_c_unifrhoa + &
    1201              :                                                                  epsilon_c_unif1rhoa - e_lsda_c_arhoarhoa)*gc_ab + e_lsda_c_abrhoa &
    1202              :                                                                               *(u_c_ab1rhoa*t170 + u_c_ab*u_c_ab1rhoa*c_cab_2) + ( &
    1203              :                                                                       epsilon_c_unif1rhoa*rho + epsilon_c_unif - e_lsda_c_a1rhoa)* &
    1204              :                                                                           gc_abrhoa + e_lsda_c_ab*(u_c_abrhoarhoa*t170 + 0.2e1_dp* &
    1205              :                                                                            u_c_abrhoa*u_c_ab1rhoa*c_cab_2 + u_c_ab*u_c_abrhoarhoa* &
    1206              :                                                                    c_cab_2) + e_lsda_c_arhoarhoa*gc_a + e_lsda_c_arhoa*(u_c_a1rhoa &
    1207              :                                                                       *t173 + u_c_a*u_c_a1rhoa*c_css_2) + e_lsda_c_a1rhoa*gc_arhoa &
    1208              :                                                                             + e_lsda_c_a*(u_c_arhoarhoa*t173 + 0.2e1_dp*u_c_arhoa* &
    1209            0 :                                                                                   u_c_a1rhoa*c_css_2 + u_c_a*u_c_arhoarhoa*c_css_2))
    1210            0 :                         e_ra_ra(ii) = e_ra_ra(ii) + exc_rhoa_rhoa
    1211              :                      END IF
    1212              : 
    1213            0 :                      chirhoarhob = 0.2e1_dp*t601
    1214            0 :                      rsrhoarhob = rsrhoarhoa
    1215            0 :                      t974 = t221*t396*t236
    1216            0 :                      t976 = alpha_1_1*rsrhob
    1217            0 :                      t981 = rsrhoa*rsrhob
    1218            0 :                      t993 = rsrhob*t647*rsrhoa
    1219              :                      e_c_u_0rhoarhob = -0.2e1_dp*t216*rsrhoarhob*t56 + t619* &
    1220              :                                        t974 + t976*t621 - 0.2e1_dp*t626*t237*t396 + t222*(-t632* &
    1221              :                                                                               t981/0.4e1_dp + t224*rsrhoarhob/0.2e1_dp + beta_2_1* &
    1222              :                                                                       rsrhoarhob + 0.3e1_dp/0.4e1_dp*t639*t981 + 0.3e1_dp/0.2e1_dp &
    1223              :                                                                             *t228*rsrhoarhob + t50*t644*t993 + t50*t48*rsrhoarhob* &
    1224              :                                                                               t232 - t50*t48*t993)*t236 + t661*t235*t663*t42*t396/ &
    1225            0 :                                        0.2e1_dp
    1226            0 :                      t1012 = t244*t410*t257
    1227            0 :                      t1014 = alpha_1_2*rsrhob
    1228            0 :                      t1047 = t265*t424*t278
    1229            0 :                      t1049 = alpha_1_3*rsrhob
    1230              :                      frhoarhob = (0.4e1_dp/0.9e1_dp*t765*chirhoa*chirhob + &
    1231              :                                   0.4e1_dp/0.3e1_dp*t99*chirhoarhob + 0.4e1_dp/0.9e1_dp*t772 &
    1232              :                                   *chirhoa*chirhob - 0.4e1_dp/0.3e1_dp*t102*chirhoarhob)* &
    1233            0 :                                  t97
    1234            0 :                      t1107 = t107*chirhoa*chirhob
    1235              :                      t1136 = -0.4e1_dp*t105*t290*chirhoarhob + (-0.2e1_dp*t239 &
    1236              :                                                                 *rsrhoarhob*t74 + t671*t1012 + t1014*t673 - 0.2e1_dp*t678* &
    1237              :                                                                 t258*t410 + t245*(-t683*t981/0.4e1_dp + t246*rsrhoarhob/ &
    1238              :                                                                           0.2e1_dp + beta_2_2*rsrhoarhob + 0.3e1_dp/0.4e1_dp*t689* &
    1239              :                                                                         t981 + 0.3e1_dp/0.2e1_dp*t250*rsrhoarhob + t68*t694*t993 + &
    1240              :                                                                               t68*t66*rsrhoarhob*t232 - t68*t66*t993)*t257 + t709* &
    1241              :                                                                 t256*t711*t62*t410/0.2e1_dp - e_c_u_0rhoarhob)*f*t108 + &
    1242              :                              t294*frhob*t108 + 0.4e1_dp*t295*t443 + t438*frhoa*t108 + &
    1243              :                              t112*frhoarhob*t108 + 0.4e1_dp*t297*t443 + 0.4e1_dp*t439 &
    1244              :                              *t299 + 0.4e1_dp*t441*t299 + 0.12e2_dp*t113*t1107 + &
    1245            0 :                              0.4e1_dp*t113*t289*chirhoarhob
    1246              :                      u_c_abrhoarhob = -0.2e1_dp*t906*t480 + 0.2e1_dp*t911*t914 &
    1247            0 :                                       *s_avg_2rhob
    1248              : 
    1249            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1250              :                         exc_rhoa_rhob = scale_c*(((e_c_u_0rhoarhob + (0.2e1_dp*t260* &
    1251              :                                                                       rsrhoarhob*t92 - t719*t1047 - t1049*t721 + 0.2e1_dp*t726* &
    1252              :                                                                       t279*t424 - t266*(-t731*t981/0.4e1_dp + t267*rsrhoarhob/ &
    1253              :                                                                       0.2e1_dp + beta_2_3*rsrhoarhob + 0.3e1_dp/0.4e1_dp*t737*t981 &
    1254              :                                                                          + 0.3e1_dp/0.2e1_dp*t271*rsrhoarhob + t86*t742*t993 + t86 &
    1255              :                                                                              *t84*rsrhoarhob*t232 - t86*t84*t993)*t278 - t757*t277 &
    1256              :                                                                       *t759*t80*t424/0.2e1_dp)*f*t110 + alpha_crhoa*frhob* &
    1257              :                                                    t110 - 0.4e1_dp*t285*t435 + alpha_crhob*frhoa*t110 + alpha_c &
    1258              :                                                    *frhoarhob*t110 - 0.4e1_dp*t287*t435 - 0.4e1_dp*t431* &
    1259              :                                                    t291 - 0.4e1_dp*t433*t291 - 0.12e2_dp*t105*t106*t1107 + &
    1260              :                                                    t1136)*rho + epsilon_c_unifrhoa + epsilon_c_unifrhob)*gc_ab + &
    1261              :                                                  e_lsda_c_abrhoa*gc_abrhob + e_lsda_c_abrhob*gc_abrhoa + &
    1262              :                                                  e_lsda_c_ab*(u_c_abrhoarhob*t170 + 0.2e1_dp*u_c_abrhoa* &
    1263            0 :                                                               u_c_abrhob*c_cab_2 + u_c_ab*u_c_abrhoarhob*c_cab_2))
    1264            0 :                         e_ra_rb(ii) = e_ra_rb(ii) + exc_rhoa_rhob
    1265              :                      END IF
    1266              : 
    1267            0 :                      t1152 = t20**2
    1268            0 :                      t1157 = t365*my_rhob
    1269            0 :                      s_brhobrhob = 0.28e2_dp/0.9e1_dp*my_norm_drhob/t20/t1157
    1270            0 :                      t1161 = s_brhob**2
    1271            0 :                      t1165 = t194*s_b_2
    1272            0 :                      t1172 = s_b_2**2
    1273            0 :                      t1173 = t575*t1172
    1274            0 :                      t1175 = 0.1e1_dp/t375/t28
    1275              :                      u_x_brhobrhob = 0.2e1_dp*gamma_x*t1161*t29 - 0.10e2_dp* &
    1276              :                                      t1165*t376*t1161 + 0.2e1_dp*t370*t29*s_brhobrhob + &
    1277              :                                      0.8e1_dp*t1173*t1175*t1161 - 0.2e1_dp*t374*t376* &
    1278            0 :                                      s_brhobrhob
    1279            0 :                      u_x_b1rhob = u_x_brhob
    1280            0 :                      chirhobrhob = 0.2e1_dp*t208 + 0.2e1_dp*t601
    1281            0 :                      rsrhobrhob = rsrhoarhob
    1282            0 :                      t1201 = t396**2
    1283            0 :                      t1205 = rsrhob**2
    1284              :                      e_c_u_0rhobrhob = -0.2e1_dp*t216*rsrhobrhob*t56 + 0.2e1_dp* &
    1285              :                                        t976*t974 - 0.2e1_dp*t626*t1201*t236 + t222*(-t632* &
    1286              :                                                                              t1205/0.4e1_dp + t224*rsrhobrhob/0.2e1_dp + beta_2_1* &
    1287              :                                                                              rsrhobrhob + 0.3e1_dp/0.4e1_dp*t639*t1205 + 0.3e1_dp/ &
    1288              :                                                                           0.2e1_dp*t228*rsrhobrhob + t50*t644*t1205*t647 + t50*t48 &
    1289              :                                                                                *rsrhobrhob*t232 - t50*t48*t1205*t647)*t236 + t661* &
    1290            0 :                                        t1201*t663*t42/0.2e1_dp
    1291            0 :                      e_c_u_01rhob = e_c_u_0rhob
    1292            0 :                      t1236 = t410**2
    1293            0 :                      t1270 = t424**2
    1294            0 :                      alpha_c1rhob = alpha_crhob
    1295            0 :                      t1299 = chirhob**2
    1296              :                      frhobrhob = (0.4e1_dp/0.9e1_dp*t765*t1299 + 0.4e1_dp/ &
    1297              :                                   0.3e1_dp*t99*chirhobrhob + 0.4e1_dp/0.9e1_dp*t772*t1299 - &
    1298            0 :                                   0.4e1_dp/0.3e1_dp*t102*chirhobrhob)*t97
    1299            0 :                      f1rhob = frhob
    1300            0 :                      t1321 = alpha_c1rhob*f
    1301            0 :                      t1324 = alpha_c*f1rhob
    1302            0 :                      t1341 = e_c_u_1rhob - e_c_u_01rhob
    1303            0 :                      t1348 = t1341*f
    1304            0 :                      t1351 = t112*f1rhob
    1305              :                      t1360 = -0.4e1_dp*t105*t290*chirhobrhob + (-0.2e1_dp*t239 &
    1306              :                                                                 *rsrhobrhob*t74 + 0.2e1_dp*t1014*t1012 - 0.2e1_dp*t678* &
    1307              :                                                                 t1236*t257 + t245*(-t683*t1205/0.4e1_dp + t246*rsrhobrhob &
    1308              :                                                                          /0.2e1_dp + beta_2_2*rsrhobrhob + 0.3e1_dp/0.4e1_dp*t689* &
    1309              :                                                                         t1205 + 0.3e1_dp/0.2e1_dp*t250*rsrhobrhob + t68*t694*t1205 &
    1310              :                                                                              *t647 + t68*t66*rsrhobrhob*t232 - t68*t66*t1205*t647) &
    1311              :                                                                 *t257 + t709*t1236*t711*t62/0.2e1_dp - e_c_u_0rhobrhob)*f &
    1312              :                              *t108 + t438*f1rhob*t108 + 0.4e1_dp*t439*t443 + t1341* &
    1313              :                              frhob*t108 + t112*frhobrhob*t108 + 0.4e1_dp*t441*t443 + &
    1314              :                              0.4e1_dp*t1348*t443 + 0.4e1_dp*t1351*t443 + 0.12e2_dp*t113 &
    1315            0 :                              *t107*t1299 + 0.4e1_dp*t113*t289*chirhobrhob
    1316              :                      epsilon_c_unif1rhob = e_c_u_01rhob + t1321*t110 + t1324*t110 - &
    1317            0 :                                            t437 + t1348*t108 + t1351*t108 + t445
    1318            0 :                      t1368 = t365**2
    1319              :                      rs_brhobrhob = -t4/t446/t138*t606/t1368/0.18e2_dp &
    1320            0 :                                     + t4*t448/t1157/0.6e1_dp
    1321            0 :                      t1388 = t471**2
    1322            0 :                      t1394 = rs_brhob**2
    1323            0 :                      t1406 = rs_b**2
    1324            0 :                      t1407 = 0.1e1_dp/t1406
    1325            0 :                      t1419 = t456**2
    1326            0 :                      t1422 = t155**2
    1327            0 :                      epsilon_c_unif_b1rhob = epsilon_c_unif_brhob
    1328            0 :                      s_b_2rhobrhob = 0.2e1_dp*t1161 + 0.2e1_dp*s_b*s_brhobrhob
    1329            0 :                      s_b_21rhob = s_b_2rhob
    1330            0 :                      s_avg_2rhobrhob = s_b_2rhobrhob/0.2e1_dp
    1331            0 :                      s_avg_21rhob = s_b_21rhob/0.2e1_dp
    1332              :                      e_lsda_c_brhobrhob = (-0.2e1_dp*t239*rs_brhobrhob*t156 + &
    1333              :                                            0.2e1_dp*alpha_1_2*rs_brhob*t457*t471*t472 - 0.2e1_dp* &
    1334              :                                            t142/t456/t151*t1388*t472 + t458*(-beta_1_2/t147*t1394 &
    1335              :                                                                              /0.4e1_dp + t460*rs_brhobrhob/0.2e1_dp + beta_2_2* &
    1336              :                                                                             rs_brhobrhob + 0.3e1_dp/0.4e1_dp*beta_3_2*t459*t1394 + &
    1337              :                                                                             0.3e1_dp/0.2e1_dp*t464*rs_brhobrhob + t150*t694*t1394* &
    1338              :                                                                              t1407 + t150*t66*rs_brhobrhob*t468 - t150*t66*t1394* &
    1339              :                                                                              t1407)*t472 + t142/t1419*t1388/t1422*t62/0.2e1_dp)* &
    1340            0 :                                           my_rhob + epsilon_c_unif_brhob + epsilon_c_unif_b1rhob
    1341            0 :                      e_lsda_c_b1rhob = epsilon_c_unif_b1rhob*my_rhob + epsilon_c_unif_b
    1342            0 :                      t1436 = t336*s_avg_2rhob
    1343            0 :                      t1437 = t339*s_avg_21rhob
    1344            0 :                      t1440 = t913*s_avg_2rhob
    1345              :                      u_c_abrhobrhob = gamma_c_ab*s_avg_2rhobrhob*t162 - 0.2e1_dp* &
    1346              :                                       t1436*t1437 + 0.2e1_dp*t911*t1440*s_avg_21rhob - t337*t339 &
    1347            0 :                                       *s_avg_2rhobrhob
    1348            0 :                      u_c_ab1rhob = gamma_c_ab*s_avg_21rhob*t162 - t337*t1437
    1349            0 :                      t1451 = t344*s_b_2rhob
    1350            0 :                      t1452 = t486*s_b_21rhob
    1351            0 :                      t1455 = t929*s_b_2
    1352            0 :                      t1457 = 0.1e1_dp/t485/t167
    1353            0 :                      t1458 = t1457*s_b_2rhob
    1354              :                      u_c_brhobrhob = gamma_c_ss*s_b_2rhobrhob*t168 - 0.2e1_dp* &
    1355              :                                      t1451*t1452 + 0.2e1_dp*t1455*t1458*s_b_21rhob - t484*t486 &
    1356            0 :                                      *s_b_2rhobrhob
    1357            0 :                      u_c_b1rhob = gamma_c_ss*s_b_21rhob*t168 - t484*t1452
    1358              : 
    1359            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1360              :                         exc_rhob_rhob = scale_x*(-t4*t6/t1152*gx_b/ &
    1361              :                                                  0.6e1_dp + e_lsda_x_brhob*(u_x_b1rhob*t31 + u_x_b*u_x_b1rhob* &
    1362              :                                                                      c_x_2) + e_lsda_x_brhob*gx_brhob + e_lsda_x_b*(u_x_brhobrhob* &
    1363              :                                                                                 t31 + 0.2e1_dp*u_x_brhob*u_x_b1rhob*c_x_2 + u_x_b* &
    1364              :                                                                    u_x_brhobrhob*c_x_2)) + scale_c*(((e_c_u_0rhobrhob + (0.2e1_dp* &
    1365              :                                                                             t260*rsrhobrhob*t92 - 0.2e1_dp*t1049*t1047 + 0.2e1_dp* &
    1366              :                                                                               t726*t1270*t278 - t266*(-t731*t1205/0.4e1_dp + t267* &
    1367              :                                                                      rsrhobrhob/0.2e1_dp + beta_2_3*rsrhobrhob + 0.3e1_dp/0.4e1_dp &
    1368              :                                                                             *t737*t1205 + 0.3e1_dp/0.2e1_dp*t271*rsrhobrhob + t86* &
    1369              :                                                                               t742*t1205*t647 + t86*t84*rsrhobrhob*t232 - t86*t84* &
    1370              :                                                                                t1205*t647)*t278 - t757*t1270*t759*t80/0.2e1_dp)*f* &
    1371              :                                                                              t110 + alpha_crhob*f1rhob*t110 - 0.4e1_dp*t431*t435 + &
    1372              :                                                                        alpha_c1rhob*frhob*t110 + alpha_c*frhobrhob*t110 - 0.4e1_dp &
    1373              :                                                                           *t433*t435 - 0.4e1_dp*t1321*t435 - 0.4e1_dp*t1324*t435 - &
    1374              :                                                                        0.12e2_dp*t105*t796*t1299 + t1360)*rho + epsilon_c_unifrhob &
    1375              :                                                                                + epsilon_c_unif1rhob - e_lsda_c_brhobrhob)*gc_ab + &
    1376              :                                                                            e_lsda_c_abrhob*(u_c_ab1rhob*t170 + u_c_ab*u_c_ab1rhob* &
    1377              :                                                                             c_cab_2) + (epsilon_c_unif1rhob*rho + epsilon_c_unif - &
    1378              :                                                                      e_lsda_c_b1rhob)*gc_abrhob + e_lsda_c_ab*(u_c_abrhobrhob*t170 &
    1379              :                                                                                + 0.2e1_dp*u_c_abrhob*u_c_ab1rhob*c_cab_2 + u_c_ab* &
    1380              :                                                                                u_c_abrhobrhob*c_cab_2) + e_lsda_c_brhobrhob*gc_b + &
    1381              :                                                                        e_lsda_c_brhob*(u_c_b1rhob*t176 + u_c_b*u_c_b1rhob*c_css_2) &
    1382              :                                                                      + e_lsda_c_b1rhob*gc_brhob + e_lsda_c_b*(u_c_brhobrhob*t176 + &
    1383              :                                                                        0.2e1_dp*u_c_brhob*u_c_b1rhob*c_css_2 + u_c_b*u_c_brhobrhob &
    1384            0 :                                                                                                                           *c_css_2))
    1385            0 :                         e_rb_rb(ii) = e_rb_rb(ii) + exc_rhob_rhob
    1386              :                      END IF
    1387              : 
    1388            0 :                      s_arhoanorm_drhoa = -0.4e1_dp/0.3e1_dp*t188
    1389              :                      u_x_arhoanorm_drhoa = 0.2e1_dp*gamma_x*s_anorm_drhoa*t192 - &
    1390              :                                            0.10e2_dp*t568*t199*s_anorm_drhoa + 0.2e1_dp*t191*t16* &
    1391              :                                            s_arhoanorm_drhoa + 0.8e1_dp*t577*t579*s_arhoa*s_anorm_drhoa &
    1392            0 :                                            - 0.2e1_dp*t196*t198*s_arhoanorm_drhoa
    1393              :                      s_a_2rhoanorm_drhoa = 0.2e1_dp*s_anorm_drhoa*s_arhoa + &
    1394            0 :                                            0.2e1_dp*s_a*s_arhoanorm_drhoa
    1395            0 :                      s_avg_2rhoanorm_drhoa = s_a_2rhoanorm_drhoa/0.2e1_dp
    1396              :                      u_c_abrhoanorm_drhoa = gamma_c_ab*s_avg_2rhoanorm_drhoa*t162 - &
    1397              :                                             0.2e1_dp*t906*t512 + 0.2e1_dp*t911*t914*s_avg_2norm_drhoa &
    1398            0 :                                             - t337*t339*s_avg_2rhoanorm_drhoa
    1399              :                      u_c_arhoanorm_drhoa = gamma_c_ss*s_a_2rhoanorm_drhoa*t165 - &
    1400              :                                            0.2e1_dp*t925*t516 + 0.2e1_dp*t930*t933*s_a_2norm_drhoa - &
    1401            0 :                                            t345*t347*s_a_2rhoanorm_drhoa
    1402              : 
    1403            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1404              :                         exc_rhoa_norm_drhoa = scale_x*(e_lsda_x_arhoa*gx_anorm_drhoa + &
    1405              :                                                        e_lsda_x_a*(u_x_arhoanorm_drhoa*t18 + 0.2e1_dp*u_x_arhoa* &
    1406              :                                                                    u_x_anorm_drhoa*c_x_2 + u_x_a*u_x_arhoanorm_drhoa*c_x_2)) + &
    1407              :                                               scale_c*(e_lsda_c_abrhoa*gc_abnorm_drhoa + e_lsda_c_ab*( &
    1408              :                                                        u_c_abrhoanorm_drhoa*t170 + 0.2e1_dp*u_c_abrhoa* &
    1409              :                                                        u_c_abnorm_drhoa*c_cab_2 + u_c_ab*u_c_abrhoanorm_drhoa*c_cab_2 &
    1410              :                                                        ) + e_lsda_c_arhoa*gc_anorm_drhoa + e_lsda_c_a*( &
    1411              :                                                        u_c_arhoanorm_drhoa*t173 + 0.2e1_dp*u_c_arhoa*u_c_anorm_drhoa &
    1412            0 :                                                        *c_css_2 + u_c_a*u_c_arhoanorm_drhoa*c_css_2))
    1413            0 :                         e_ra_ndra(ii) = e_ra_ndra(ii) + exc_rhoa_norm_drhoa
    1414              :                      END IF
    1415              : 
    1416              :                      u_c_abrhobnorm_drhoa = -0.2e1_dp*t1436*t512 + 0.2e1_dp*t911 &
    1417            0 :                                             *t1440*s_avg_2norm_drhoa
    1418              : 
    1419            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1420              :                         exc_rhob_norm_drhoa = scale_c*(e_lsda_c_abrhob*gc_abnorm_drhoa &
    1421              :                                                        + e_lsda_c_ab*(u_c_abrhobnorm_drhoa*t170 + 0.2e1_dp* &
    1422              :                                                                       u_c_abrhob*u_c_abnorm_drhoa*c_cab_2 + u_c_ab* &
    1423            0 :                                                                       u_c_abrhobnorm_drhoa*c_cab_2))
    1424            0 :                         e_rb_ndra(ii) = e_rb_ndra(ii) + exc_rhob_norm_drhoa
    1425              :                      END IF
    1426              : 
    1427            0 :                      t1571 = s_anorm_drhoa**2
    1428              :                      u_x_anorm_drhoanorm_drhoa = 0.2e1_dp*gamma_x*t1571*t16 - &
    1429            0 :                                                  0.10e2_dp*t568*t198*t1571 + 0.8e1_dp*t577*t579*t1571
    1430            0 :                      s_a_2norm_drhoanorm_drhoa = 0.2e1_dp*t1571
    1431            0 :                      s_a_21norm_drhoa = s_a_2norm_drhoa
    1432            0 :                      s_avg_2norm_drhoanorm_drhoa = s_a_2norm_drhoanorm_drhoa/0.2e1_dp
    1433            0 :                      s_avg_21norm_drhoa = s_a_21norm_drhoa/0.2e1_dp
    1434            0 :                      t1589 = t336*s_avg_2norm_drhoa
    1435            0 :                      t1590 = t339*s_avg_21norm_drhoa
    1436            0 :                      t1593 = t913*s_avg_2norm_drhoa
    1437              :                      u_c_abnorm_drhoanorm_drhoa = gamma_c_ab* &
    1438              :                                                   s_avg_2norm_drhoanorm_drhoa*t162 - 0.2e1_dp*t1589*t1590 + &
    1439              :                                                   0.2e1_dp*t911*t1593*s_avg_21norm_drhoa - t337*t339* &
    1440            0 :                                                   s_avg_2norm_drhoanorm_drhoa
    1441            0 :                      t1605 = t347*s_a_21norm_drhoa
    1442              :                      u_c_anorm_drhoanorm_drhoa = gamma_c_ss*s_a_2norm_drhoanorm_drhoa &
    1443              :                                                  *t165 - 0.2e1_dp*t344*s_a_2norm_drhoa*t1605 + 0.2e1_dp* &
    1444              :                                                  t930*t932*s_a_2norm_drhoa*s_a_21norm_drhoa - t345*t347* &
    1445            0 :                                                  s_a_2norm_drhoanorm_drhoa
    1446              : 
    1447            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1448              :                         exc_norm_drhoa_norm_drhoa = scale_x*e_lsda_x_a*( &
    1449              :                                                     u_x_anorm_drhoanorm_drhoa*t18 + 0.2e1_dp*u_x_anorm_drhoa**2* &
    1450              :                                                     c_x_2 + u_x_a*u_x_anorm_drhoanorm_drhoa*c_x_2) + scale_c*( &
    1451              :                                                     e_lsda_c_ab*(u_c_abnorm_drhoanorm_drhoa*t170 + 0.2e1_dp* &
    1452              :                                                                  u_c_abnorm_drhoa*(gamma_c_ab*s_avg_21norm_drhoa*t162 - t337* &
    1453              :                                                                      t1590)*c_cab_2 + u_c_ab*u_c_abnorm_drhoanorm_drhoa*c_cab_2) + &
    1454              :                                                     e_lsda_c_a*(u_c_anorm_drhoanorm_drhoa*t173 + 0.2e1_dp* &
    1455              :                                                                 u_c_anorm_drhoa*(gamma_c_ss*s_a_21norm_drhoa*t165 - t345* &
    1456            0 :                                                                           t1605)*c_css_2 + u_c_a*u_c_anorm_drhoanorm_drhoa*c_css_2))
    1457            0 :                         e_ndra_ndra(ii) = e_ndra_ndra(ii) + exc_norm_drhoa_norm_drhoa
    1458              :                      END IF
    1459              : 
    1460              :                      u_c_abrhoanorm_drhob = -0.2e1_dp*t906*t539 + 0.2e1_dp*t911* &
    1461            0 :                                             t914*s_avg_2norm_drhob
    1462              : 
    1463            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1464              :                         exc_rhoa_norm_drhob = scale_c*(e_lsda_c_abrhoa*gc_abnorm_drhob &
    1465              :                                                        + e_lsda_c_ab*(u_c_abrhoanorm_drhob*t170 + 0.2e1_dp* &
    1466              :                                                                       u_c_abrhoa*u_c_abnorm_drhob*c_cab_2 + u_c_ab* &
    1467            0 :                                                                       u_c_abrhoanorm_drhob*c_cab_2))
    1468            0 :                         e_ra_ndrb(ii) = e_ra_ndrb(ii) + exc_rhoa_norm_drhob
    1469              :                      END IF
    1470              : 
    1471            0 :                      s_brhobnorm_drhob = -0.4e1_dp/0.3e1_dp*t367
    1472              :                      u_x_brhobnorm_drhob = 0.2e1_dp*gamma_x*s_bnorm_drhob*t371 - &
    1473              :                                            0.10e2_dp*t1165*t377*s_bnorm_drhob + 0.2e1_dp*t370*t29* &
    1474              :                                            s_brhobnorm_drhob + 0.8e1_dp*t1173*t1175*s_brhob* &
    1475            0 :                                            s_bnorm_drhob - 0.2e1_dp*t374*t376*s_brhobnorm_drhob
    1476              :                      s_b_2rhobnorm_drhob = 0.2e1_dp*s_bnorm_drhob*s_brhob + &
    1477            0 :                                            0.2e1_dp*s_b*s_brhobnorm_drhob
    1478            0 :                      s_avg_2rhobnorm_drhob = s_b_2rhobnorm_drhob/0.2e1_dp
    1479              :                      u_c_abrhobnorm_drhob = gamma_c_ab*s_avg_2rhobnorm_drhob*t162 - &
    1480              :                                             0.2e1_dp*t1436*t539 + 0.2e1_dp*t911*t1440* &
    1481            0 :                                             s_avg_2norm_drhob - t337*t339*s_avg_2rhobnorm_drhob
    1482              :                      u_c_brhobnorm_drhob = gamma_c_ss*s_b_2rhobnorm_drhob*t168 - &
    1483              :                                            0.2e1_dp*t1451*t543 + 0.2e1_dp*t1455*t1458*s_b_2norm_drhob &
    1484            0 :                                            - t484*t486*s_b_2rhobnorm_drhob
    1485              : 
    1486            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1487              :                         exc_rhob_norm_drhob = scale_x*(e_lsda_x_brhob*gx_bnorm_drhob + &
    1488              :                                                        e_lsda_x_b*(u_x_brhobnorm_drhob*t31 + 0.2e1_dp*u_x_brhob* &
    1489              :                                                                    u_x_bnorm_drhob*c_x_2 + u_x_b*u_x_brhobnorm_drhob*c_x_2)) + &
    1490              :                                               scale_c*(e_lsda_c_abrhob*gc_abnorm_drhob + e_lsda_c_ab*( &
    1491              :                                                        u_c_abrhobnorm_drhob*t170 + 0.2e1_dp*u_c_abrhob* &
    1492              :                                                        u_c_abnorm_drhob*c_cab_2 + u_c_ab*u_c_abrhobnorm_drhob*c_cab_2 &
    1493              :                                                        ) + e_lsda_c_brhob*gc_bnorm_drhob + e_lsda_c_b*( &
    1494              :                                                        u_c_brhobnorm_drhob*t176 + 0.2e1_dp*u_c_brhob*u_c_bnorm_drhob &
    1495            0 :                                                        *c_css_2 + u_c_b*u_c_brhobnorm_drhob*c_css_2))
    1496            0 :                         e_rb_ndrb(ii) = e_rb_ndrb(ii) + exc_rhob_norm_drhob
    1497              :                      END IF
    1498              : 
    1499              :                      u_c_abnorm_drhoanorm_drhob = -0.2e1_dp*t1589*t539 + 0.2e1_dp* &
    1500            0 :                                                   t911*t1593*s_avg_2norm_drhob
    1501              : 
    1502            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1503              :                         exc_norm_drhoa_norm_drhob = scale_c*e_lsda_c_ab*( &
    1504              :                                                     u_c_abnorm_drhoanorm_drhob*t170 + 0.2e1_dp*u_c_abnorm_drhoa* &
    1505              :                                                     u_c_abnorm_drhob*c_cab_2 + u_c_ab*u_c_abnorm_drhoanorm_drhob* &
    1506            0 :                                                     c_cab_2)
    1507            0 :                         e_ndra_ndrb(ii) = e_ndra_ndrb(ii) + exc_norm_drhoa_norm_drhob
    1508              :                      END IF
    1509              : 
    1510            0 :                      t1719 = s_bnorm_drhob**2
    1511              :                      u_x_bnorm_drhobnorm_drhob = 0.2e1_dp*gamma_x*t1719*t29 - &
    1512            0 :                                                  0.10e2_dp*t1165*t376*t1719 + 0.8e1_dp*t1173*t1175*t1719
    1513            0 :                      s_b_2norm_drhobnorm_drhob = 0.2e1_dp*t1719
    1514            0 :                      s_b_21norm_drhob = s_b_2norm_drhob
    1515            0 :                      s_avg_2norm_drhobnorm_drhob = s_b_2norm_drhobnorm_drhob/0.2e1_dp
    1516            0 :                      s_avg_21norm_drhob = s_b_21norm_drhob/0.2e1_dp
    1517            0 :                      t1738 = t339*s_avg_21norm_drhob
    1518              :                      u_c_abnorm_drhobnorm_drhob = gamma_c_ab* &
    1519              :                                                   s_avg_2norm_drhobnorm_drhob*t162 - 0.2e1_dp*t336* &
    1520              :                                                   s_avg_2norm_drhob*t1738 + 0.2e1_dp*t911*t913* &
    1521              :                                                   s_avg_2norm_drhob*s_avg_21norm_drhob - t337*t339* &
    1522            0 :                                                   s_avg_2norm_drhobnorm_drhob
    1523            0 :                      t1753 = t486*s_b_21norm_drhob
    1524              :                      u_c_bnorm_drhobnorm_drhob = gamma_c_ss*s_b_2norm_drhobnorm_drhob &
    1525              :                                                  *t168 - 0.2e1_dp*t344*s_b_2norm_drhob*t1753 + 0.2e1_dp* &
    1526              :                                                  t1455*t1457*s_b_2norm_drhob*s_b_21norm_drhob - t484*t486* &
    1527            0 :                                                  s_b_2norm_drhobnorm_drhob
    1528              : 
    1529            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    1530              :                         exc_norm_drhob_norm_drhob = scale_x*e_lsda_x_b*( &
    1531              :                                                     u_x_bnorm_drhobnorm_drhob*t31 + 0.2e1_dp*u_x_bnorm_drhob**2* &
    1532              :                                                     c_x_2 + u_x_b*u_x_bnorm_drhobnorm_drhob*c_x_2) + scale_c*( &
    1533              :                                                     e_lsda_c_ab*(u_c_abnorm_drhobnorm_drhob*t170 + 0.2e1_dp* &
    1534              :                                                                  u_c_abnorm_drhob*(gamma_c_ab*s_avg_21norm_drhob*t162 - t337* &
    1535              :                                                                      t1738)*c_cab_2 + u_c_ab*u_c_abnorm_drhobnorm_drhob*c_cab_2) + &
    1536              :                                                     e_lsda_c_b*(u_c_bnorm_drhobnorm_drhob*t176 + 0.2e1_dp* &
    1537              :                                                                 u_c_bnorm_drhob*(gamma_c_ss*s_b_21norm_drhob*t168 - t484* &
    1538            0 :                                                                           t1753)*c_css_2 + u_c_b*u_c_bnorm_drhobnorm_drhob*c_css_2))
    1539            0 :                         e_ndrb_ndrb(ii) = e_ndrb_ndrb(ii) + exc_norm_drhob_norm_drhob
    1540              :                      END IF
    1541              :                   END IF ! <1 || >1
    1542              :                END IF ! /=0
    1543              :             END IF ! rho>epsilon_rho
    1544              :          END DO
    1545              : !$OMP        END DO
    1546              :       END SELECT
    1547            0 :    END SUBROUTINE b97_lsd_calc
    1548              : 
    1549              : ! **************************************************************************************************
    1550              : !> \brief low level calculation of the b97 exchange-correlation functional for lda
    1551              : !> \param rho_tot ...
    1552              : !> \param norm_drho || grad (rhoa+rhob) ||
    1553              : !> \param e_0 adds to it the local value of the functional
    1554              : !> \param e_r derivative of the energy density with respect to r
    1555              : !> \param e_r_r derivative of the energy density with respect to r_r
    1556              : !> \param e_ndr derivative of the energy density with respect to ndr
    1557              : !> \param e_r_ndr derivative of the energy density with respect to r_ndr
    1558              : !> \param e_ndr_ndr derivative of the energy density with respect to ndr_ndr
    1559              : !> \param grad_deriv ...
    1560              : !> \param npoints ...
    1561              : !> \param epsilon_rho ...
    1562              : !> \param param ...
    1563              : !> \param scale_c_in ...
    1564              : !> \param scale_x_in ...
    1565              : !> \author fawzi
    1566              : !> \note slow version
    1567              : ! **************************************************************************************************
    1568          607 :    SUBROUTINE b97_lda_calc(rho_tot, norm_drho, &
    1569              :                            e_0, e_r, e_r_r, e_ndr, e_r_ndr, e_ndr_ndr, &
    1570              :                            grad_deriv, npoints, epsilon_rho, &
    1571              :                            param, scale_c_in, scale_x_in)
    1572              :       REAL(kind=dp), DIMENSION(*), INTENT(in)            :: rho_tot, norm_drho
    1573              :       REAL(kind=dp), DIMENSION(*), INTENT(inout)         :: e_0, e_r, e_r_r, e_ndr, e_r_ndr, &
    1574              :                                                             e_ndr_ndr
    1575              :       INTEGER, INTENT(in)                                :: grad_deriv, npoints
    1576              :       REAL(kind=dp), INTENT(in)                          :: epsilon_rho
    1577              :       INTEGER, INTENT(in)                                :: param
    1578              :       REAL(kind=dp), INTENT(in)                          :: scale_c_in, scale_x_in
    1579              : 
    1580              :       INTEGER                                            :: ii
    1581              :       REAL(kind=dp) :: A_1, A_2, A_3, alpha_1_1, alpha_1_2, alpha_1_3, alpha_c, alpha_c1rhoa, &
    1582              :          alpha_c1rhob, alpha_crhoa, alpha_crhob, beta_1_1, beta_1_2, beta_1_3, beta_2_1, beta_2_2, &
    1583              :          beta_2_3, beta_3_1, beta_3_2, beta_3_3, beta_4_1, beta_4_2, beta_4_3, c_cab_0, c_cab_1, &
    1584              :          c_cab_2, c_css_0, c_css_1, c_css_2, c_x_0, c_x_1, c_x_2, chi, chirhoa, chirhoarhoa, &
    1585              :          chirhoarhob, chirhob, chirhobrhob, e_c_u_0, e_c_u_01rhoa, e_c_u_01rhob, e_c_u_0rhoa, &
    1586              :          e_c_u_0rhoarhoa, e_c_u_0rhoarhob, e_c_u_0rhob, e_c_u_0rhobrhob, e_c_u_1rhoa, e_c_u_1rhob, &
    1587              :          e_lsda_c_a, e_lsda_c_a1rhoa, e_lsda_c_ab, e_lsda_c_abrhoa
    1588              :       REAL(kind=dp) :: e_lsda_c_abrhob, e_lsda_c_arhoa, e_lsda_c_arhoarhoa, e_lsda_c_b, &
    1589              :          e_lsda_c_b1rhob, e_lsda_c_brhob, e_lsda_c_brhobrhob, e_lsda_x_a, e_lsda_x_arhoa, &
    1590              :          e_lsda_x_b, e_lsda_x_brhob, epsilon_c_unif, epsilon_c_unif1rhoa, epsilon_c_unif1rhob, &
    1591              :          epsilon_c_unif_a, epsilon_c_unif_a1rhoa, epsilon_c_unif_arhoa, epsilon_c_unif_b, &
    1592              :          epsilon_c_unif_b1rhob, epsilon_c_unif_brhob, epsilon_c_unifrhoa, epsilon_c_unifrhob, exc, &
    1593              :          exc_norm_drhoa, exc_norm_drhoa_norm_drhoa, exc_norm_drhoa_norm_drhob, exc_norm_drhob, &
    1594              :          exc_norm_drhob_norm_drhob, exc_rhoa, exc_rhoa_norm_drhoa, exc_rhoa_norm_drhob
    1595              :       REAL(kind=dp) :: exc_rhoa_rhoa, exc_rhoa_rhob, exc_rhob, exc_rhob_norm_drhoa, &
    1596              :          exc_rhob_norm_drhob, exc_rhob_rhob, f, f1rhoa, f1rhob, frhoa, frhoarhoa, frhoarhob, &
    1597              :          frhob, frhobrhob, gamma_c_ab, gamma_c_ss, gamma_x, gc_a, gc_ab, gc_abnorm_drhoa, &
    1598              :          gc_abnorm_drhob, gc_abrhoa, gc_abrhob, gc_anorm_drhoa, gc_arhoa, gc_b, gc_bnorm_drhob, &
    1599              :          gc_brhob, gx_a, gx_anorm_drhoa, gx_arhoa, gx_b, gx_bnorm_drhob, gx_brhob, my_norm_drhoa, &
    1600              :          my_norm_drhob, my_rhoa, my_rhob, p_1, p_2, p_3, rho, rs, rs_a, rs_arhoa, rs_arhoarhoa, &
    1601              :          rs_b, rs_brhob, rs_brhobrhob, rsrhoa, rsrhoarhoa, rsrhoarhob, rsrhob, rsrhobrhob, s_a
    1602              :       REAL(kind=dp) :: s_a_2, s_a_21norm_drhoa, s_a_21rhoa, s_a_2norm_drhoa, &
    1603              :          s_a_2norm_drhoanorm_drhoa, s_a_2rhoa, s_a_2rhoanorm_drhoa, s_a_2rhoarhoa, s_anorm_drhoa, &
    1604              :          s_arhoa, s_arhoanorm_drhoa, s_arhoarhoa, s_avg_2, s_avg_21norm_drhoa, s_avg_21norm_drhob, &
    1605              :          s_avg_21rhoa, s_avg_21rhob, s_avg_2norm_drhoa, s_avg_2norm_drhoanorm_drhoa, &
    1606              :          s_avg_2norm_drhob, s_avg_2norm_drhobnorm_drhob, s_avg_2rhoa, s_avg_2rhoanorm_drhoa, &
    1607              :          s_avg_2rhoarhoa, s_avg_2rhob, s_avg_2rhobnorm_drhob, s_avg_2rhobrhob, s_b, s_b_2, &
    1608              :          s_b_21norm_drhob, s_b_21rhob, s_b_2norm_drhob, s_b_2norm_drhobnorm_drhob, s_b_2rhob, &
    1609              :          s_b_2rhobnorm_drhob
    1610              :       REAL(kind=dp) :: s_b_2rhobrhob, s_bnorm_drhob, s_brhob, s_brhobnorm_drhob, s_brhobrhob, &
    1611              :          scale_c, scale_x, t1, t101, t1012, t1014, t102, t1047, t1049, t105, t106, t107, t108, &
    1612              :          t110, t1107, t112, t113, t1136, t1152, t1157, t116, t1161, t1165, t117, t1172, t1173, &
    1613              :          t1175, t12, t120, t1201, t1205, t122, t1236, t125, t127, t1270, t128, t129, t1299, t13, &
    1614              :          t1321, t1324, t133, t134, t1341, t1348, t1351, t1360, t1368, t138, t1388, t139, t1394, &
    1615              :          t14, t1406, t1407, t1419, t142, t1422, t1436, t1437, t144, t1440, t1451, t1452, t1455, &
    1616              :          t1457, t1458, t147, t149, t15, t150, t151, t155, t156, t1571, t1589, t1590
    1617              :       REAL(kind=dp) :: t1593, t16, t160, t1605, t161, t162, t163, t164, t165, t166, t167, t168, &
    1618              :          t170, t1719, t173, t1738, t1753, t176, t18, t186, t188, t191, t192, t194, t196, t197, &
    1619              :          t198, t199, t2, t20, t207, t208, t209, t21, t210, t212, t216, t220, t221, t222, t223, &
    1620              :          t224, t228, t232, t235, t236, t237, t239, t243, t244, t245, t246, t25, t250, t256, t257, &
    1621              :          t258, t26, t260, t264, t265, t266, t267, t27, t271, t277, t278, t279, t28, t285, t287, &
    1622              :          t289, t29, t290, t291, t293, t294, t295, t297, t299, t3, t301, t302, t304, t31, t312, &
    1623              :          t313, t314, t315, t316, t320, t324, t327, t328, t33, t336, t337, t338
    1624              :       REAL(kind=dp) :: t339, t34, t344, t345, t346, t347, t35, t36, t365, t367, t37, t370, t371, &
    1625              :          t374, t375, t376, t377, t396, t4, t40, t410, t42, t424, t43, t431, t433, t435, t437, &
    1626              :          t438, t439, t441, t443, t445, t446, t448, t456, t457, t458, t459, t46, t460, t464, t468, &
    1627              :          t471, t472, t48, t480, t484, t485, t486, t49, t50, t51, t512, t516, t539, t543, t55, &
    1628              :          t555, t56, t560, t564, t568, t575, t576, t577, t579, t6, t60, t600, t601, t605, t606, &
    1629              :          t608, t619, t62, t621, t626, t627, t631, t632, t633, t639, t644, t646, t647, t659, t66, &
    1630              :          t661, t662, t663, t67, t671, t673, t678, t679, t68, t683, t689, t69
    1631              :       REAL(kind=dp) :: t694, t7, t707, t709, t710, t711, t719, t721, t726, t727, t73, t731, t737, &
    1632              :          t74, t742, t755, t757, t758, t759, t764, t765, t766, t771, t772, t78, t790, t793, t796, &
    1633              :          t8, t80, t811, t818, t821, t830, t838, t84, t85, t858, t86, t864, t87, t876, t877, t889, &
    1634              :          t892, t906, t907, t91, t911, t913, t914, t92, t925, t926, t929, t930, t932, t933, t94, &
    1635              :          t97, t974, t976, t98, t981, t99, t993, u_c_a, u_c_a1rhoa, u_c_ab, u_c_ab1rhoa, &
    1636              :          u_c_ab1rhob, u_c_abnorm_drhoa, u_c_abnorm_drhoanorm_drhoa, u_c_abnorm_drhoanorm_drhob, &
    1637              :          u_c_abnorm_drhob, u_c_abnorm_drhobnorm_drhob, u_c_abrhoa
    1638              :       REAL(kind=dp) :: u_c_abrhoanorm_drhoa, u_c_abrhoanorm_drhob, u_c_abrhoarhoa, u_c_abrhoarhob, &
    1639              :          u_c_abrhob, u_c_abrhobnorm_drhoa, u_c_abrhobnorm_drhob, u_c_abrhobrhob, u_c_anorm_drhoa, &
    1640              :          u_c_anorm_drhoanorm_drhoa, u_c_arhoa, u_c_arhoanorm_drhoa, u_c_arhoarhoa, u_c_b, &
    1641              :          u_c_b1rhob, u_c_bnorm_drhob, u_c_bnorm_drhobnorm_drhob, u_c_brhob, u_c_brhobnorm_drhob, &
    1642              :          u_c_brhobrhob, u_x_a, u_x_a1rhoa, u_x_anorm_drhoa, u_x_anorm_drhoanorm_drhoa, u_x_arhoa, &
    1643              :          u_x_arhoanorm_drhoa, u_x_arhoarhoa, u_x_b, u_x_b1rhob, u_x_bnorm_drhob, &
    1644              :          u_x_bnorm_drhobnorm_drhob, u_x_brhob, u_x_brhobnorm_drhob, u_x_brhobrhob
    1645              :       REAL(kind=dp), DIMENSION(10)                       :: coeffs
    1646              : 
    1647          607 :       p_1 = 0.10e1_dp
    1648          607 :       A_1 = 0.31091e-1_dp
    1649          607 :       alpha_1_1 = 0.21370e0_dp
    1650          607 :       beta_1_1 = 0.75957e1_dp
    1651          607 :       beta_2_1 = 0.35876e1_dp
    1652          607 :       beta_3_1 = 0.16382e1_dp
    1653          607 :       beta_4_1 = 0.49294e0_dp
    1654          607 :       p_2 = 0.10e1_dp
    1655          607 :       A_2 = 0.15545e-1_dp
    1656          607 :       alpha_1_2 = 0.20548e0_dp
    1657          607 :       beta_1_2 = 0.141189e2_dp
    1658          607 :       beta_2_2 = 0.61977e1_dp
    1659          607 :       beta_3_2 = 0.33662e1_dp
    1660          607 :       beta_4_2 = 0.62517e0_dp
    1661          607 :       p_3 = 0.10e1_dp
    1662          607 :       A_3 = 0.16887e-1_dp
    1663          607 :       alpha_1_3 = 0.11125e0_dp
    1664          607 :       beta_1_3 = 0.10357e2_dp
    1665          607 :       beta_2_3 = 0.36231e1_dp
    1666          607 :       beta_3_3 = 0.88026e0_dp
    1667          607 :       beta_4_3 = 0.49671e0_dp
    1668              : 
    1669          607 :       coeffs = b97_coeffs(param)
    1670          607 :       c_x_0 = coeffs(1)
    1671          607 :       c_x_1 = coeffs(2)
    1672          607 :       c_x_2 = coeffs(3)
    1673          607 :       c_cab_0 = coeffs(4)
    1674          607 :       c_cab_1 = coeffs(5)
    1675          607 :       c_cab_2 = coeffs(6)
    1676          607 :       c_css_0 = coeffs(7)
    1677          607 :       c_css_1 = coeffs(8)
    1678          607 :       c_css_2 = coeffs(9)
    1679              : 
    1680          607 :       scale_c = scale_c_in
    1681          607 :       scale_x = scale_x_in
    1682          607 :       IF (scale_x == -1.0_dp) scale_x = coeffs(10)
    1683              : 
    1684          607 :       gamma_x = 0.004_dp
    1685          607 :       gamma_c_ss = 0.2_dp
    1686          607 :       gamma_c_ab = 0.006_dp
    1687              : 
    1688              :       SELECT CASE (grad_deriv)
    1689              :       CASE default
    1690          607 :          t1 = 3**(0.1e1_dp/0.3e1_dp)
    1691          607 :          t2 = 4**(0.1e1_dp/0.3e1_dp)
    1692          607 :          t3 = t2**2
    1693          607 :          t4 = t1*t3
    1694          607 :          t6 = (0.1e1_dp/pi)**(0.1e1_dp/0.3e1_dp)
    1695          607 : !$OMP      DO
    1696              :          DO ii = 1, npoints
    1697     15268288 :             my_rhoa = 0.5_dp*MAX(rho_tot(ii), 0.0_dp)
    1698     15268288 :             my_rhob = my_rhoa
    1699     15268288 :             rho = my_rhoa + my_rhob
    1700     15268288 :             IF (rho > epsilon_rho) THEN
    1701      8586461 :                my_rhoa = MAX(my_rhoa, 0.5_dp*epsilon_rho)
    1702      8586461 :                my_rhob = MAX(my_rhob, 0.5_dp*epsilon_rho)
    1703      8586461 :                rho = my_rhoa + my_rhob
    1704      8586461 :                my_norm_drhoa = 0.5_dp*norm_drho(ii)
    1705      8586461 :                my_norm_drhob = 0.5_dp*norm_drho(ii)
    1706      8586461 :                t7 = my_rhoa**(0.1e1_dp/0.3e1_dp)
    1707      8586461 :                t8 = t7*my_rhoa
    1708      8586461 :                e_lsda_x_a = -0.3e1_dp/0.8e1_dp*t4*t6*t8
    1709      8586461 :                t12 = 0.1e1_dp/t8
    1710      8586461 :                s_a = my_norm_drhoa*t12
    1711      8586461 :                t13 = s_a**2
    1712      8586461 :                t14 = gamma_x*t13
    1713      8586461 :                t15 = 0.1e1_dp + t14
    1714      8586461 :                t16 = 0.1e1_dp/t15
    1715      8586461 :                u_x_a = t14*t16
    1716      8586461 :                t18 = c_x_1 + u_x_a*c_x_2
    1717      8586461 :                gx_a = c_x_0 + u_x_a*t18
    1718      8586461 :                t20 = my_rhob**(0.1e1_dp/0.3e1_dp)
    1719      8586461 :                t21 = t20*my_rhob
    1720      8586461 :                e_lsda_x_b = -0.3e1_dp/0.8e1_dp*t4*t6*t21
    1721      8586461 :                t25 = 0.1e1_dp/t21
    1722      8586461 :                s_b = my_norm_drhob*t25
    1723      8586461 :                t26 = s_b**2
    1724      8586461 :                t27 = gamma_x*t26
    1725      8586461 :                t28 = 0.1e1_dp + t27
    1726      8586461 :                t29 = 0.1e1_dp/t28
    1727      8586461 :                u_x_b = t27*t29
    1728      8586461 :                t31 = c_x_1 + u_x_b*c_x_2
    1729      8586461 :                gx_b = c_x_0 + u_x_b*t31
    1730      8586461 :                t33 = my_rhoa - my_rhob
    1731      8586461 :                t34 = 0.1e1_dp/rho
    1732      8586461 :                chi = t33*t34
    1733      8586461 :                t35 = 0.1e1_dp/pi
    1734      8586461 :                t36 = t35*t34
    1735      8586461 :                t37 = t36**(0.1e1_dp/0.3e1_dp)
    1736      8586461 :                rs = t4*t37/0.4e1_dp
    1737      8586461 :                t40 = 0.1e1_dp + alpha_1_1*rs
    1738      8586461 :                t42 = 0.1e1_dp/A_1
    1739      8586461 :                t43 = SQRT(rs)
    1740      8586461 :                t46 = t43*rs
    1741      8586461 :                t48 = p_1 + 0.1e1_dp
    1742      8586461 :                t49 = rs**t48
    1743      8586461 :                t50 = beta_4_1*t49
    1744      8586461 :                t51 = beta_1_1*t43 + beta_2_1*rs + beta_3_1*t46 + t50
    1745      8586461 :                t55 = 0.1e1_dp + t42/t51/0.2e1_dp
    1746      8586461 :                t56 = LOG(t55)
    1747      8586461 :                e_c_u_0 = -0.2e1_dp*A_1*t40*t56
    1748      8586461 :                t60 = 0.1e1_dp + alpha_1_2*rs
    1749      8586461 :                t62 = 0.1e1_dp/A_2
    1750      8586461 :                t66 = p_2 + 0.1e1_dp
    1751      8586461 :                t67 = rs**t66
    1752      8586461 :                t68 = beta_4_2*t67
    1753      8586461 :                t69 = beta_1_2*t43 + beta_2_2*rs + beta_3_2*t46 + t68
    1754      8586461 :                t73 = 0.1e1_dp + t62/t69/0.2e1_dp
    1755      8586461 :                t74 = LOG(t73)
    1756      8586461 :                t78 = 0.1e1_dp + alpha_1_3*rs
    1757      8586461 :                t80 = 0.1e1_dp/A_3
    1758      8586461 :                t84 = p_3 + 0.1e1_dp
    1759      8586461 :                t85 = rs**t84
    1760      8586461 :                t86 = beta_4_3*t85
    1761      8586461 :                t87 = beta_1_3*t43 + beta_2_3*rs + beta_3_3*t46 + t86
    1762      8586461 :                t91 = 0.1e1_dp + t80/t87/0.2e1_dp
    1763      8586461 :                t92 = LOG(t91)
    1764      8586461 :                alpha_c = 0.2e1_dp*A_3*t78*t92
    1765      8586461 :                t94 = 2**(0.1e1_dp/0.3e1_dp)
    1766      8586461 :                t97 = 1/(2*t94 - 2)
    1767      8586461 :                t98 = 0.1e1_dp + chi
    1768      8586461 :                t99 = t98**(0.1e1_dp/0.3e1_dp)
    1769      8586461 :                t101 = 0.1e1_dp - chi
    1770      8586461 :                t102 = t101**(0.1e1_dp/0.3e1_dp)
    1771      8586461 :                f = (t99*t98 + t102*t101 - 0.2e1_dp)*t97
    1772      8586461 :                t105 = alpha_c*f
    1773      8586461 :                t106 = 0.9e1_dp/0.8e1_dp/t97
    1774      8586461 :                t107 = chi**2
    1775      8586461 :                t108 = t107**2
    1776      8586461 :                t110 = t106*(0.1e1_dp - t108)
    1777      8586461 :                t112 = -0.2e1_dp*A_2*t60*t74 - e_c_u_0
    1778      8586461 :                t113 = t112*f
    1779      8586461 :                epsilon_c_unif = e_c_u_0 + t105*t110 + t113*t108
    1780      8586461 :                t116 = t35/my_rhoa
    1781      8586461 :                t117 = t116**(0.1e1_dp/0.3e1_dp)
    1782      8586461 :                rs_a = t4*t117/0.4e1_dp
    1783      8586461 :                t120 = 0.1e1_dp + alpha_1_2*rs_a
    1784      8586461 :                t122 = SQRT(rs_a)
    1785      8586461 :                t125 = t122*rs_a
    1786      8586461 :                t127 = rs_a**t66
    1787      8586461 :                t128 = beta_4_2*t127
    1788      8586461 :                t129 = beta_1_2*t122 + beta_2_2*rs_a + beta_3_2*t125 + t128
    1789      8586461 :                t133 = 0.1e1_dp + t62/t129/0.2e1_dp
    1790      8586461 :                t134 = LOG(t133)
    1791      8586461 :                epsilon_c_unif_a = -0.2e1_dp*A_2*t120*t134
    1792      8586461 :                t138 = t35/my_rhob
    1793      8586461 :                t139 = t138**(0.1e1_dp/0.3e1_dp)
    1794      8586461 :                rs_b = t4*t139/0.4e1_dp
    1795      8586461 :                t142 = 0.1e1_dp + alpha_1_2*rs_b
    1796      8586461 :                t144 = SQRT(rs_b)
    1797      8586461 :                t147 = t144*rs_b
    1798      8586461 :                t149 = rs_b**t66
    1799      8586461 :                t150 = beta_4_2*t149
    1800      8586461 :                t151 = beta_1_2*t144 + beta_2_2*rs_b + beta_3_2*t147 + t150
    1801      8586461 :                t155 = 0.1e1_dp + t62/t151/0.2e1_dp
    1802      8586461 :                t156 = LOG(t155)
    1803      8586461 :                epsilon_c_unif_b = -0.2e1_dp*A_2*t142*t156
    1804      8586461 :                s_a_2 = t13
    1805      8586461 :                s_b_2 = t26
    1806      8586461 :                s_avg_2 = s_a_2/0.2e1_dp + s_b_2/0.2e1_dp
    1807      8586461 :                e_lsda_c_a = epsilon_c_unif_a*my_rhoa
    1808      8586461 :                e_lsda_c_b = epsilon_c_unif_b*my_rhob
    1809      8586461 :                t160 = gamma_c_ab*s_avg_2
    1810      8586461 :                t161 = 0.1e1_dp + t160
    1811      8586461 :                t162 = 0.1e1_dp/t161
    1812      8586461 :                u_c_ab = t160*t162
    1813      8586461 :                t163 = gamma_c_ss*s_a_2
    1814      8586461 :                t164 = 0.1e1_dp + t163
    1815      8586461 :                t165 = 0.1e1_dp/t164
    1816      8586461 :                u_c_a = t163*t165
    1817      8586461 :                t166 = gamma_c_ss*s_b_2
    1818      8586461 :                t167 = 0.1e1_dp + t166
    1819      8586461 :                t168 = 0.1e1_dp/t167
    1820      8586461 :                u_c_b = t166*t168
    1821      8586461 :                e_lsda_c_ab = epsilon_c_unif*rho - e_lsda_c_a - e_lsda_c_b
    1822      8586461 :                t170 = c_cab_1 + u_c_ab*c_cab_2
    1823      8586461 :                gc_ab = c_cab_0 + u_c_ab*t170
    1824      8586461 :                t173 = c_css_1 + u_c_a*c_css_2
    1825      8586461 :                gc_a = c_css_0 + u_c_a*t173
    1826      8586461 :                t176 = c_css_1 + u_c_b*c_css_2
    1827      8586461 :                gc_b = c_css_0 + u_c_b*t176
    1828              : 
    1829      8586461 :                IF (grad_deriv >= 0) THEN
    1830              :                   exc = scale_x*(e_lsda_x_a*gx_a + e_lsda_x_b*gx_b) + scale_c &
    1831      8586461 :                         *(e_lsda_c_ab*gc_ab + e_lsda_c_a*gc_a + e_lsda_c_b*gc_b)
    1832      8586461 :                   e_0(ii) = e_0(ii) + exc
    1833              :                END IF
    1834              : 
    1835      8586461 :                IF (grad_deriv /= 0) THEN
    1836              : 
    1837      8586461 :                   e_lsda_x_arhoa = -t4*t6*t7/0.2e1_dp
    1838      8586461 :                   t186 = my_rhoa**2
    1839      8586461 :                   t188 = 0.1e1_dp/t7/t186
    1840      8586461 :                   s_arhoa = -0.4e1_dp/0.3e1_dp*my_norm_drhoa*t188
    1841      8586461 :                   t191 = gamma_x*s_a
    1842      8586461 :                   t192 = t16*s_arhoa
    1843      8586461 :                   t194 = gamma_x**2
    1844      8586461 :                   t196 = t194*s_a_2*s_a
    1845      8586461 :                   t197 = t15**2
    1846      8586461 :                   t198 = 0.1e1_dp/t197
    1847      8586461 :                   t199 = t198*s_arhoa
    1848      8586461 :                   u_x_arhoa = 0.2e1_dp*t191*t192 - 0.2e1_dp*t196*t199
    1849      8586461 :                   gx_arhoa = u_x_arhoa*t18 + u_x_a*u_x_arhoa*c_x_2
    1850      8586461 :                   t207 = rho**2
    1851      8586461 :                   t208 = 0.1e1_dp/t207
    1852      8586461 :                   t209 = t33*t208
    1853      8586461 :                   chirhoa = t34 - t209
    1854      8586461 :                   t210 = t37**2
    1855      8586461 :                   t212 = 0.1e1_dp/t210*t35
    1856      8586461 :                   rsrhoa = -t4*t212*t208/0.12e2_dp
    1857      8586461 :                   t216 = A_1*alpha_1_1
    1858      8586461 :                   t220 = t51**2
    1859      8586461 :                   t221 = 0.1e1_dp/t220
    1860      8586461 :                   t222 = t40*t221
    1861      8586461 :                   t223 = 0.1e1_dp/t43
    1862      8586461 :                   t224 = beta_1_1*t223
    1863      8586461 :                   t228 = beta_3_1*t43
    1864      8586461 :                   t232 = 0.1e1_dp/rs
    1865              :                   t235 = t224*rsrhoa/0.2e1_dp + beta_2_1*rsrhoa + 0.3e1_dp/ &
    1866      8586461 :                          0.2e1_dp*t228*rsrhoa + t50*t48*rsrhoa*t232
    1867      8586461 :                   t236 = 0.1e1_dp/t55
    1868      8586461 :                   t237 = t235*t236
    1869      8586461 :                   e_c_u_0rhoa = -0.2e1_dp*t216*rsrhoa*t56 + t222*t237
    1870      8586461 :                   t239 = A_2*alpha_1_2
    1871      8586461 :                   t243 = t69**2
    1872      8586461 :                   t244 = 0.1e1_dp/t243
    1873      8586461 :                   t245 = t60*t244
    1874      8586461 :                   t246 = beta_1_2*t223
    1875      8586461 :                   t250 = beta_3_2*t43
    1876              :                   t256 = t246*rsrhoa/0.2e1_dp + beta_2_2*rsrhoa + 0.3e1_dp/ &
    1877      8586461 :                          0.2e1_dp*t250*rsrhoa + t68*t66*rsrhoa*t232
    1878      8586461 :                   t257 = 0.1e1_dp/t73
    1879      8586461 :                   t258 = t256*t257
    1880      8586461 :                   e_c_u_1rhoa = -0.2e1_dp*t239*rsrhoa*t74 + t245*t258
    1881      8586461 :                   t260 = A_3*alpha_1_3
    1882      8586461 :                   t264 = t87**2
    1883      8586461 :                   t265 = 0.1e1_dp/t264
    1884      8586461 :                   t266 = t78*t265
    1885      8586461 :                   t267 = beta_1_3*t223
    1886      8586461 :                   t271 = beta_3_3*t43
    1887              :                   t277 = t267*rsrhoa/0.2e1_dp + beta_2_3*rsrhoa + 0.3e1_dp/ &
    1888      8586461 :                          0.2e1_dp*t271*rsrhoa + t86*t84*rsrhoa*t232
    1889      8586461 :                   t278 = 0.1e1_dp/t91
    1890      8586461 :                   t279 = t277*t278
    1891      8586461 :                   alpha_crhoa = 0.2e1_dp*t260*rsrhoa*t92 - t266*t279
    1892              :                   frhoa = (0.4e1_dp/0.3e1_dp*t99*chirhoa - 0.4e1_dp/0.3e1_dp &
    1893      8586461 :                            *t102*chirhoa)*t97
    1894      8586461 :                   t285 = alpha_crhoa*f
    1895      8586461 :                   t287 = alpha_c*frhoa
    1896      8586461 :                   t289 = t107*chi
    1897      8586461 :                   t290 = t106*t289
    1898      8586461 :                   t291 = t290*chirhoa
    1899      8586461 :                   t293 = 0.4e1_dp*t105*t291
    1900      8586461 :                   t294 = e_c_u_1rhoa - e_c_u_0rhoa
    1901      8586461 :                   t295 = t294*f
    1902      8586461 :                   t297 = t112*frhoa
    1903      8586461 :                   t299 = t289*chirhoa
    1904      8586461 :                   t301 = 0.4e1_dp*t113*t299
    1905              :                   epsilon_c_unifrhoa = e_c_u_0rhoa + t285*t110 + t287*t110 - &
    1906      8586461 :                                        t293 + t295*t108 + t297*t108 + t301
    1907      8586461 :                   t302 = t117**2
    1908      8586461 :                   t304 = 0.1e1_dp/t302*t35
    1909      8586461 :                   rs_arhoa = -t4*t304/t186/0.12e2_dp
    1910      8586461 :                   t312 = t129**2
    1911      8586461 :                   t313 = 0.1e1_dp/t312
    1912      8586461 :                   t314 = t120*t313
    1913      8586461 :                   t315 = 0.1e1_dp/t122
    1914      8586461 :                   t316 = beta_1_2*t315
    1915      8586461 :                   t320 = beta_3_2*t122
    1916      8586461 :                   t324 = 0.1e1_dp/rs_a
    1917              :                   t327 = t316*rs_arhoa/0.2e1_dp + beta_2_2*rs_arhoa + 0.3e1_dp &
    1918      8586461 :                          /0.2e1_dp*t320*rs_arhoa + t128*t66*rs_arhoa*t324
    1919      8586461 :                   t328 = 0.1e1_dp/t133
    1920              :                   epsilon_c_unif_arhoa = -0.2e1_dp*t239*rs_arhoa*t134 + t314* &
    1921      8586461 :                                          t327*t328
    1922      8586461 :                   s_a_2rhoa = 0.2e1_dp*s_a*s_arhoa
    1923      8586461 :                   s_avg_2rhoa = s_a_2rhoa/0.2e1_dp
    1924      8586461 :                   e_lsda_c_arhoa = epsilon_c_unif_arhoa*my_rhoa + epsilon_c_unif_a
    1925      8586461 :                   t336 = gamma_c_ab**2
    1926      8586461 :                   t337 = t336*s_avg_2
    1927      8586461 :                   t338 = t161**2
    1928      8586461 :                   t339 = 0.1e1_dp/t338
    1929      8586461 :                   u_c_abrhoa = gamma_c_ab*s_avg_2rhoa*t162 - t337*t339*s_avg_2rhoa
    1930      8586461 :                   t344 = gamma_c_ss**2
    1931      8586461 :                   t345 = t344*s_a_2
    1932      8586461 :                   t346 = t164**2
    1933      8586461 :                   t347 = 0.1e1_dp/t346
    1934      8586461 :                   u_c_arhoa = gamma_c_ss*s_a_2rhoa*t165 - t345*t347*s_a_2rhoa
    1935              :                   e_lsda_c_abrhoa = epsilon_c_unifrhoa*rho + epsilon_c_unif - &
    1936      8586461 :                                     e_lsda_c_arhoa
    1937      8586461 :                   gc_abrhoa = u_c_abrhoa*t170 + u_c_ab*u_c_abrhoa*c_cab_2
    1938      8586461 :                   gc_arhoa = u_c_arhoa*t173 + u_c_a*u_c_arhoa*c_css_2
    1939              : 
    1940      8586461 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    1941              :                      exc_rhoa = scale_x*(e_lsda_x_arhoa*gx_a + e_lsda_x_a* &
    1942              :                                          gx_arhoa) + scale_c*(e_lsda_c_abrhoa*gc_ab + e_lsda_c_ab* &
    1943      8586461 :                                                               gc_abrhoa + e_lsda_c_arhoa*gc_a + e_lsda_c_a*gc_arhoa)
    1944      8586461 :                      e_r(ii) = e_r(ii) + 0.5_dp*exc_rhoa
    1945              :                   END IF
    1946              : 
    1947      8586461 :                   e_lsda_x_brhob = -t4*t6*t20/0.2e1_dp
    1948      8586461 :                   t365 = my_rhob**2
    1949      8586461 :                   t367 = 0.1e1_dp/t20/t365
    1950      8586461 :                   s_brhob = -0.4e1_dp/0.3e1_dp*my_norm_drhob*t367
    1951      8586461 :                   t370 = gamma_x*s_b
    1952      8586461 :                   t371 = t29*s_brhob
    1953      8586461 :                   t374 = t194*s_b_2*s_b
    1954      8586461 :                   t375 = t28**2
    1955      8586461 :                   t376 = 0.1e1_dp/t375
    1956      8586461 :                   t377 = t376*s_brhob
    1957      8586461 :                   u_x_brhob = 0.2e1_dp*t370*t371 - 0.2e1_dp*t374*t377
    1958      8586461 :                   gx_brhob = u_x_brhob*t31 + u_x_b*u_x_brhob*c_x_2
    1959      8586461 :                   chirhob = -t34 - t209
    1960      8586461 :                   rsrhob = rsrhoa
    1961              :                   t396 = t224*rsrhob/0.2e1_dp + beta_2_1*rsrhob + 0.3e1_dp/ &
    1962      8586461 :                          0.2e1_dp*t228*rsrhob + t50*t48*rsrhob*t232
    1963      8586461 :                   e_c_u_0rhob = -0.2e1_dp*t216*rsrhob*t56 + t222*t396*t236
    1964              :                   t410 = t246*rsrhob/0.2e1_dp + beta_2_2*rsrhob + 0.3e1_dp/ &
    1965      8586461 :                          0.2e1_dp*t250*rsrhob + t68*t66*rsrhob*t232
    1966      8586461 :                   e_c_u_1rhob = -0.2e1_dp*t239*rsrhob*t74 + t245*t410*t257
    1967              :                   t424 = t267*rsrhob/0.2e1_dp + beta_2_3*rsrhob + 0.3e1_dp/ &
    1968      8586461 :                          0.2e1_dp*t271*rsrhob + t86*t84*rsrhob*t232
    1969      8586461 :                   alpha_crhob = 0.2e1_dp*t260*rsrhob*t92 - t266*t424*t278
    1970              :                   frhob = (0.4e1_dp/0.3e1_dp*t99*chirhob - 0.4e1_dp/0.3e1_dp &
    1971      8586461 :                            *t102*chirhob)*t97
    1972      8586461 :                   t431 = alpha_crhob*f
    1973      8586461 :                   t433 = alpha_c*frhob
    1974      8586461 :                   t435 = t290*chirhob
    1975      8586461 :                   t437 = 0.4e1_dp*t105*t435
    1976      8586461 :                   t438 = e_c_u_1rhob - e_c_u_0rhob
    1977      8586461 :                   t439 = t438*f
    1978      8586461 :                   t441 = t112*frhob
    1979      8586461 :                   t443 = t289*chirhob
    1980      8586461 :                   t445 = 0.4e1_dp*t113*t443
    1981              :                   epsilon_c_unifrhob = e_c_u_0rhob + t431*t110 + t433*t110 - &
    1982      8586461 :                                        t437 + t439*t108 + t441*t108 + t445
    1983      8586461 :                   t446 = t139**2
    1984      8586461 :                   t448 = 0.1e1_dp/t446*t35
    1985      8586461 :                   rs_brhob = -t4*t448/t365/0.12e2_dp
    1986      8586461 :                   t456 = t151**2
    1987      8586461 :                   t457 = 0.1e1_dp/t456
    1988      8586461 :                   t458 = t142*t457
    1989      8586461 :                   t459 = 0.1e1_dp/t144
    1990      8586461 :                   t460 = beta_1_2*t459
    1991      8586461 :                   t464 = beta_3_2*t144
    1992      8586461 :                   t468 = 0.1e1_dp/rs_b
    1993              :                   t471 = t460*rs_brhob/0.2e1_dp + beta_2_2*rs_brhob + 0.3e1_dp &
    1994      8586461 :                          /0.2e1_dp*rs_brhob*t464 + t150*t66*rs_brhob*t468
    1995      8586461 :                   t472 = 0.1e1_dp/t155
    1996              :                   epsilon_c_unif_brhob = -0.2e1_dp*t239*rs_brhob*t156 + t458* &
    1997      8586461 :                                          t471*t472
    1998      8586461 :                   s_b_2rhob = 0.2e1_dp*s_b*s_brhob
    1999      8586461 :                   s_avg_2rhob = s_b_2rhob/0.2e1_dp
    2000      8586461 :                   e_lsda_c_brhob = epsilon_c_unif_brhob*my_rhob + epsilon_c_unif_b
    2001      8586461 :                   t480 = t339*s_avg_2rhob
    2002      8586461 :                   u_c_abrhob = gamma_c_ab*s_avg_2rhob*t162 - t337*t480
    2003      8586461 :                   t484 = t344*s_b_2
    2004      8586461 :                   t485 = t167**2
    2005      8586461 :                   t486 = 0.1e1_dp/t485
    2006      8586461 :                   u_c_brhob = gamma_c_ss*s_b_2rhob*t168 - t484*t486*s_b_2rhob
    2007              :                   e_lsda_c_abrhob = epsilon_c_unifrhob*rho + epsilon_c_unif - &
    2008      8586461 :                                     e_lsda_c_brhob
    2009      8586461 :                   gc_abrhob = u_c_abrhob*t170 + u_c_ab*u_c_abrhob*c_cab_2
    2010      8586461 :                   gc_brhob = u_c_brhob*t176 + u_c_b*u_c_brhob*c_css_2
    2011              : 
    2012      8586461 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    2013              :                      exc_rhob = scale_x*(e_lsda_x_brhob*gx_b + e_lsda_x_b* &
    2014              :                                          gx_brhob) + scale_c*(e_lsda_c_abrhob*gc_ab + e_lsda_c_ab* &
    2015      8586461 :                                                               gc_abrhob + e_lsda_c_brhob*gc_b + e_lsda_c_b*gc_brhob)
    2016      8586461 :                      e_r(ii) = e_r(ii) + 0.5_dp*exc_rhob
    2017              :                   END IF
    2018              : 
    2019      8586461 :                   s_anorm_drhoa = t12
    2020              :                   u_x_anorm_drhoa = 0.2e1_dp*t191*t16*s_anorm_drhoa - 0.2e1_dp &
    2021      8586461 :                                     *t196*t198*s_anorm_drhoa
    2022      8586461 :                   gx_anorm_drhoa = u_x_anorm_drhoa*t18 + u_x_a*u_x_anorm_drhoa*c_x_2
    2023      8586461 :                   s_a_2norm_drhoa = 0.2e1_dp*s_a*s_anorm_drhoa
    2024      8586461 :                   s_avg_2norm_drhoa = s_a_2norm_drhoa/0.2e1_dp
    2025      8586461 :                   t512 = t339*s_avg_2norm_drhoa
    2026      8586461 :                   u_c_abnorm_drhoa = gamma_c_ab*s_avg_2norm_drhoa*t162 - t337*t512
    2027      8586461 :                   t516 = t347*s_a_2norm_drhoa
    2028      8586461 :                   u_c_anorm_drhoa = gamma_c_ss*s_a_2norm_drhoa*t165 - t345*t516
    2029              :                   gc_abnorm_drhoa = u_c_abnorm_drhoa*t170 + u_c_ab* &
    2030      8586461 :                                     u_c_abnorm_drhoa*c_cab_2
    2031              :                   gc_anorm_drhoa = u_c_anorm_drhoa*t173 + u_c_a*u_c_anorm_drhoa &
    2032      8586461 :                                    *c_css_2
    2033              : 
    2034      8586461 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    2035              :                      exc_norm_drhoa = scale_x*e_lsda_x_a*gx_anorm_drhoa + scale_c* &
    2036      8586461 :                                       (e_lsda_c_ab*gc_abnorm_drhoa + e_lsda_c_a*gc_anorm_drhoa)
    2037      8586461 :                      e_ndr(ii) = e_ndr(ii) + 0.5_dp*exc_norm_drhoa
    2038              :                   END IF
    2039              : 
    2040      8586461 :                   s_bnorm_drhob = t25
    2041              :                   u_x_bnorm_drhob = 0.2e1_dp*t370*t29*s_bnorm_drhob - 0.2e1_dp &
    2042      8586461 :                                     *t374*t376*s_bnorm_drhob
    2043      8586461 :                   gx_bnorm_drhob = u_x_bnorm_drhob*t31 + u_x_b*u_x_bnorm_drhob*c_x_2
    2044      8586461 :                   s_b_2norm_drhob = 0.2e1_dp*s_b*s_bnorm_drhob
    2045      8586461 :                   s_avg_2norm_drhob = s_b_2norm_drhob/0.2e1_dp
    2046      8586461 :                   t539 = t339*s_avg_2norm_drhob
    2047      8586461 :                   u_c_abnorm_drhob = gamma_c_ab*s_avg_2norm_drhob*t162 - t337*t539
    2048      8586461 :                   t543 = t486*s_b_2norm_drhob
    2049      8586461 :                   u_c_bnorm_drhob = gamma_c_ss*s_b_2norm_drhob*t168 - t484*t543
    2050              :                   gc_abnorm_drhob = u_c_abnorm_drhob*t170 + u_c_ab* &
    2051      8586461 :                                     u_c_abnorm_drhob*c_cab_2
    2052              :                   gc_bnorm_drhob = u_c_bnorm_drhob*t176 + u_c_b*u_c_bnorm_drhob &
    2053      8586461 :                                    *c_css_2
    2054              : 
    2055      8586461 :                   IF (grad_deriv > 0 .OR. grad_deriv == -1) THEN
    2056              :                      exc_norm_drhob = scale_x*e_lsda_x_b*gx_bnorm_drhob + scale_c* &
    2057      8586461 :                                       (e_lsda_c_ab*gc_abnorm_drhob + e_lsda_c_b*gc_bnorm_drhob)
    2058      8586461 :                      e_ndr(ii) = e_ndr(ii) + 0.5_dp*exc_norm_drhob
    2059              :                   END IF
    2060              : 
    2061      8586461 :                   IF (grad_deriv > 1 .OR. grad_deriv < -1) THEN
    2062            0 :                      t555 = t7**2
    2063            0 :                      t560 = t186*my_rhoa
    2064            0 :                      s_arhoarhoa = 0.28e2_dp/0.9e1_dp*my_norm_drhoa/t7/t560
    2065            0 :                      t564 = s_arhoa**2
    2066            0 :                      t568 = t194*s_a_2
    2067            0 :                      t575 = t194*gamma_x
    2068            0 :                      t576 = s_a_2**2
    2069            0 :                      t577 = t575*t576
    2070            0 :                      t579 = 0.1e1_dp/t197/t15
    2071              :                      u_x_arhoarhoa = 0.2e1_dp*gamma_x*t564*t16 - 0.10e2_dp*t568 &
    2072              :                                      *t198*t564 + 0.2e1_dp*t191*t16*s_arhoarhoa + 0.8e1_dp* &
    2073            0 :                                      t577*t579*t564 - 0.2e1_dp*t196*t198*s_arhoarhoa
    2074            0 :                      u_x_a1rhoa = u_x_arhoa
    2075            0 :                      t600 = 0.1e1_dp/t207/rho
    2076            0 :                      t601 = t33*t600
    2077            0 :                      chirhoarhoa = -0.2e1_dp*t208 + 0.2e1_dp*t601
    2078            0 :                      t605 = 0.3141592654e1_dp**2
    2079            0 :                      t606 = 0.1e1_dp/t605
    2080            0 :                      t608 = t207**2
    2081              :                      rsrhoarhoa = -t4/t210/t36*t606/t608/0.18e2_dp + &
    2082            0 :                                   t4*t212*t600/0.6e1_dp
    2083            0 :                      t619 = alpha_1_1*rsrhoa
    2084            0 :                      t621 = t221*t235*t236
    2085            0 :                      t626 = t40/t220/t51
    2086            0 :                      t627 = t235**2
    2087            0 :                      t631 = 0.1e1_dp/t46
    2088            0 :                      t632 = beta_1_1*t631
    2089            0 :                      t633 = rsrhoa**2
    2090            0 :                      t639 = beta_3_1*t223
    2091            0 :                      t644 = t48**2
    2092            0 :                      t646 = rs**2
    2093            0 :                      t647 = 0.1e1_dp/t646
    2094            0 :                      t659 = t220**2
    2095            0 :                      t661 = t40/t659
    2096            0 :                      t662 = t55**2
    2097            0 :                      t663 = 0.1e1_dp/t662
    2098              :                      e_c_u_0rhoarhoa = -0.2e1_dp*t216*rsrhoarhoa*t56 + 0.2e1_dp* &
    2099              :                                        t619*t621 - 0.2e1_dp*t626*t627*t236 + t222*(-t632*t633 &
    2100              :                                                                       /0.4e1_dp + t224*rsrhoarhoa/0.2e1_dp + beta_2_1*rsrhoarhoa + &
    2101              :                                                                              0.3e1_dp/0.4e1_dp*t639*t633 + 0.3e1_dp/0.2e1_dp*t228* &
    2102              :                                                                              rsrhoarhoa + t50*t644*t633*t647 + t50*t48*rsrhoarhoa* &
    2103              :                                                                               t232 - t50*t48*t633*t647)*t236 + t661*t627*t663*t42/ &
    2104            0 :                                        0.2e1_dp
    2105            0 :                      e_c_u_01rhoa = e_c_u_0rhoa
    2106            0 :                      t671 = alpha_1_2*rsrhoa
    2107            0 :                      t673 = t244*t256*t257
    2108            0 :                      t678 = t60/t243/t69
    2109            0 :                      t679 = t256**2
    2110            0 :                      t683 = beta_1_2*t631
    2111            0 :                      t689 = beta_3_2*t223
    2112            0 :                      t694 = t66**2
    2113            0 :                      t707 = t243**2
    2114            0 :                      t709 = t60/t707
    2115            0 :                      t710 = t73**2
    2116            0 :                      t711 = 0.1e1_dp/t710
    2117            0 :                      t719 = alpha_1_3*rsrhoa
    2118            0 :                      t721 = t265*t277*t278
    2119            0 :                      t726 = t78/t264/t87
    2120            0 :                      t727 = t277**2
    2121            0 :                      t731 = beta_1_3*t631
    2122            0 :                      t737 = beta_3_3*t223
    2123            0 :                      t742 = t84**2
    2124            0 :                      t755 = t264**2
    2125            0 :                      t757 = t78/t755
    2126            0 :                      t758 = t91**2
    2127            0 :                      t759 = 0.1e1_dp/t758
    2128            0 :                      alpha_c1rhoa = alpha_crhoa
    2129            0 :                      t764 = t99**2
    2130            0 :                      t765 = 0.1e1_dp/t764
    2131            0 :                      t766 = chirhoa**2
    2132            0 :                      t771 = t102**2
    2133            0 :                      t772 = 0.1e1_dp/t771
    2134              :                      frhoarhoa = (0.4e1_dp/0.9e1_dp*t765*t766 + 0.4e1_dp/ &
    2135              :                                   0.3e1_dp*t99*chirhoarhoa + 0.4e1_dp/0.9e1_dp*t772*t766 - &
    2136            0 :                                   0.4e1_dp/0.3e1_dp*t102*chirhoarhoa)*t97
    2137            0 :                      f1rhoa = frhoa
    2138            0 :                      t790 = alpha_c1rhoa*f
    2139            0 :                      t793 = alpha_c*f1rhoa
    2140            0 :                      t796 = t106*t107
    2141            0 :                      t811 = e_c_u_1rhoa - e_c_u_01rhoa
    2142            0 :                      t818 = t811*f
    2143            0 :                      t821 = t112*f1rhoa
    2144              :                      t830 = -0.4e1_dp*t105*t290*chirhoarhoa + (-0.2e1_dp*t239* &
    2145              :                                                                rsrhoarhoa*t74 + 0.2e1_dp*t671*t673 - 0.2e1_dp*t678*t679 &
    2146              :                                                                *t257 + t245*(-t683*t633/0.4e1_dp + t246*rsrhoarhoa/ &
    2147              :                                                                       0.2e1_dp + beta_2_2*rsrhoarhoa + 0.3e1_dp/0.4e1_dp*t689*t633 &
    2148              :                                                                              + 0.3e1_dp/0.2e1_dp*t250*rsrhoarhoa + t68*t694*t633* &
    2149              :                                                                              t647 + t68*t66*rsrhoarhoa*t232 - t68*t66*t633*t647)* &
    2150              :                                                                t257 + t709*t679*t711*t62/0.2e1_dp - e_c_u_0rhoarhoa)*f* &
    2151              :                             t108 + t294*f1rhoa*t108 + 0.4e1_dp*t295*t299 + t811*frhoa &
    2152              :                             *t108 + t112*frhoarhoa*t108 + 0.4e1_dp*t297*t299 + 0.4e1_dp &
    2153              :                             *t818*t299 + 0.4e1_dp*t821*t299 + 0.12e2_dp*t113*t107* &
    2154            0 :                             t766 + 0.4e1_dp*t113*t289*chirhoarhoa
    2155              :                      epsilon_c_unif1rhoa = e_c_u_01rhoa + t790*t110 + t793*t110 - &
    2156            0 :                                            t293 + t818*t108 + t821*t108 + t301
    2157            0 :                      t838 = t186**2
    2158              :                      rs_arhoarhoa = -t4/t302/t116*t606/t838/0.18e2_dp + &
    2159            0 :                                     t4*t304/t560/0.6e1_dp
    2160            0 :                      t858 = t327**2
    2161            0 :                      t864 = rs_arhoa**2
    2162            0 :                      t876 = rs_a**2
    2163            0 :                      t877 = 0.1e1_dp/t876
    2164            0 :                      t889 = t312**2
    2165            0 :                      t892 = t133**2
    2166            0 :                      epsilon_c_unif_a1rhoa = epsilon_c_unif_arhoa
    2167            0 :                      s_a_2rhoarhoa = 0.2e1_dp*t564 + 0.2e1_dp*s_a*s_arhoarhoa
    2168            0 :                      s_a_21rhoa = s_a_2rhoa
    2169            0 :                      s_avg_2rhoarhoa = s_a_2rhoarhoa/0.2e1_dp
    2170            0 :                      s_avg_21rhoa = s_a_21rhoa/0.2e1_dp
    2171              :                      e_lsda_c_arhoarhoa = (-0.2e1_dp*t239*rs_arhoarhoa*t134 + &
    2172              :                                            0.2e1_dp*alpha_1_2*rs_arhoa*t313*t327*t328 - 0.2e1_dp* &
    2173              :                                            t120/t312/t129*t858*t328 + t314*(-beta_1_2/t125*t864/ &
    2174              :                                                                      0.4e1_dp + t316*rs_arhoarhoa/0.2e1_dp + beta_2_2*rs_arhoarhoa &
    2175              :                                                                             + 0.3e1_dp/0.4e1_dp*beta_3_2*t315*t864 + 0.3e1_dp/ &
    2176              :                                                                           0.2e1_dp*t320*rs_arhoarhoa + t128*t694*t864*t877 + t128* &
    2177              :                                                                            t66*rs_arhoarhoa*t324 - t128*t66*t864*t877)*t328 + t120 &
    2178              :                                            /t889*t858/t892*t62/0.2e1_dp)*my_rhoa + epsilon_c_unif_arhoa &
    2179            0 :                                           + epsilon_c_unif_a1rhoa
    2180            0 :                      e_lsda_c_a1rhoa = epsilon_c_unif_a1rhoa*my_rhoa + epsilon_c_unif_a
    2181            0 :                      t906 = t336*s_avg_2rhoa
    2182            0 :                      t907 = t339*s_avg_21rhoa
    2183            0 :                      t911 = t336*gamma_c_ab*s_avg_2
    2184            0 :                      t913 = 0.1e1_dp/t338/t161
    2185            0 :                      t914 = t913*s_avg_2rhoa
    2186              :                      u_c_abrhoarhoa = gamma_c_ab*s_avg_2rhoarhoa*t162 - 0.2e1_dp* &
    2187              :                                       t906*t907 + 0.2e1_dp*t911*t914*s_avg_21rhoa - t337*t339* &
    2188            0 :                                       s_avg_2rhoarhoa
    2189            0 :                      u_c_ab1rhoa = gamma_c_ab*s_avg_21rhoa*t162 - t337*t907
    2190            0 :                      t925 = t344*s_a_2rhoa
    2191            0 :                      t926 = t347*s_a_21rhoa
    2192            0 :                      t929 = t344*gamma_c_ss
    2193            0 :                      t930 = t929*s_a_2
    2194            0 :                      t932 = 0.1e1_dp/t346/t164
    2195            0 :                      t933 = t932*s_a_2rhoa
    2196              :                      u_c_arhoarhoa = gamma_c_ss*s_a_2rhoarhoa*t165 - 0.2e1_dp* &
    2197              :                                      t925*t926 + 0.2e1_dp*t930*t933*s_a_21rhoa - t345*t347* &
    2198            0 :                                      s_a_2rhoarhoa
    2199            0 :                      u_c_a1rhoa = gamma_c_ss*s_a_21rhoa*t165 - t345*t926
    2200            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2201              :                         exc_rhoa_rhoa = scale_x*(-t4*t6/t555*gx_a/0.6e1_dp &
    2202              :                                                  + e_lsda_x_arhoa*(u_x_a1rhoa*t18 + u_x_a*u_x_a1rhoa*c_x_2) &
    2203              :                                                  + e_lsda_x_arhoa*gx_arhoa + e_lsda_x_a*(u_x_arhoarhoa*t18 + &
    2204              :                                                                         0.2e1_dp*u_x_arhoa*u_x_a1rhoa*c_x_2 + u_x_a*u_x_arhoarhoa* &
    2205              :                                                                             c_x_2)) + scale_c*(((e_c_u_0rhoarhoa + (0.2e1_dp*t260* &
    2206              :                                                                          rsrhoarhoa*t92 - 0.2e1_dp*t719*t721 + 0.2e1_dp*t726*t727* &
    2207              :                                                                                t278 - t266*(-t731*t633/0.4e1_dp + t267*rsrhoarhoa/ &
    2208              :                                                                       0.2e1_dp + beta_2_3*rsrhoarhoa + 0.3e1_dp/0.4e1_dp*t737*t633 &
    2209              :                                                                               + 0.3e1_dp/0.2e1_dp*t271*rsrhoarhoa + t86*t742*t633* &
    2210              :                                                                               t647 + t86*t84*rsrhoarhoa*t232 - t86*t84*t633*t647)* &
    2211              :                                                                           t278 - t757*t727*t759*t80/0.2e1_dp)*f*t110 + alpha_crhoa &
    2212              :                                                                            *f1rhoa*t110 - 0.4e1_dp*t285*t291 + alpha_c1rhoa*frhoa* &
    2213              :                                                                               t110 + alpha_c*frhoarhoa*t110 - 0.4e1_dp*t287*t291 - &
    2214              :                                                                          0.4e1_dp*t790*t291 - 0.4e1_dp*t793*t291 - 0.12e2_dp*t105* &
    2215              :                                                                                       t796*t766 + t830)*rho + epsilon_c_unifrhoa + &
    2216              :                                                                  epsilon_c_unif1rhoa - e_lsda_c_arhoarhoa)*gc_ab + e_lsda_c_abrhoa &
    2217              :                                                                               *(u_c_ab1rhoa*t170 + u_c_ab*u_c_ab1rhoa*c_cab_2) + ( &
    2218              :                                                                       epsilon_c_unif1rhoa*rho + epsilon_c_unif - e_lsda_c_a1rhoa)* &
    2219              :                                                                           gc_abrhoa + e_lsda_c_ab*(u_c_abrhoarhoa*t170 + 0.2e1_dp* &
    2220              :                                                                            u_c_abrhoa*u_c_ab1rhoa*c_cab_2 + u_c_ab*u_c_abrhoarhoa* &
    2221              :                                                                    c_cab_2) + e_lsda_c_arhoarhoa*gc_a + e_lsda_c_arhoa*(u_c_a1rhoa &
    2222              :                                                                       *t173 + u_c_a*u_c_a1rhoa*c_css_2) + e_lsda_c_a1rhoa*gc_arhoa &
    2223              :                                                                             + e_lsda_c_a*(u_c_arhoarhoa*t173 + 0.2e1_dp*u_c_arhoa* &
    2224            0 :                                                                                   u_c_a1rhoa*c_css_2 + u_c_a*u_c_arhoarhoa*c_css_2))
    2225            0 :                         e_r_r(ii) = e_r_r(ii) + 0.5_dp*0.5_dp*exc_rhoa_rhoa
    2226              :                      END IF
    2227              : 
    2228            0 :                      chirhoarhob = 0.2e1_dp*t601
    2229            0 :                      rsrhoarhob = rsrhoarhoa
    2230            0 :                      t974 = t221*t396*t236
    2231            0 :                      t976 = alpha_1_1*rsrhob
    2232            0 :                      t981 = rsrhoa*rsrhob
    2233            0 :                      t993 = rsrhob*t647*rsrhoa
    2234              :                      e_c_u_0rhoarhob = -0.2e1_dp*t216*rsrhoarhob*t56 + t619* &
    2235              :                                        t974 + t976*t621 - 0.2e1_dp*t626*t237*t396 + t222*(-t632* &
    2236              :                                                                               t981/0.4e1_dp + t224*rsrhoarhob/0.2e1_dp + beta_2_1* &
    2237              :                                                                       rsrhoarhob + 0.3e1_dp/0.4e1_dp*t639*t981 + 0.3e1_dp/0.2e1_dp &
    2238              :                                                                             *t228*rsrhoarhob + t50*t644*t993 + t50*t48*rsrhoarhob* &
    2239              :                                                                               t232 - t50*t48*t993)*t236 + t661*t235*t663*t42*t396/ &
    2240            0 :                                        0.2e1_dp
    2241            0 :                      t1012 = t244*t410*t257
    2242            0 :                      t1014 = alpha_1_2*rsrhob
    2243            0 :                      t1047 = t265*t424*t278
    2244            0 :                      t1049 = alpha_1_3*rsrhob
    2245              :                      frhoarhob = (0.4e1_dp/0.9e1_dp*t765*chirhoa*chirhob + &
    2246              :                                   0.4e1_dp/0.3e1_dp*t99*chirhoarhob + 0.4e1_dp/0.9e1_dp*t772 &
    2247              :                                   *chirhoa*chirhob - 0.4e1_dp/0.3e1_dp*t102*chirhoarhob)* &
    2248            0 :                                  t97
    2249            0 :                      t1107 = t107*chirhoa*chirhob
    2250              :                      t1136 = -0.4e1_dp*t105*t290*chirhoarhob + (-0.2e1_dp*t239 &
    2251              :                                                                 *rsrhoarhob*t74 + t671*t1012 + t1014*t673 - 0.2e1_dp*t678* &
    2252              :                                                                 t258*t410 + t245*(-t683*t981/0.4e1_dp + t246*rsrhoarhob/ &
    2253              :                                                                           0.2e1_dp + beta_2_2*rsrhoarhob + 0.3e1_dp/0.4e1_dp*t689* &
    2254              :                                                                         t981 + 0.3e1_dp/0.2e1_dp*t250*rsrhoarhob + t68*t694*t993 + &
    2255              :                                                                               t68*t66*rsrhoarhob*t232 - t68*t66*t993)*t257 + t709* &
    2256              :                                                                 t256*t711*t62*t410/0.2e1_dp - e_c_u_0rhoarhob)*f*t108 + &
    2257              :                              t294*frhob*t108 + 0.4e1_dp*t295*t443 + t438*frhoa*t108 + &
    2258              :                              t112*frhoarhob*t108 + 0.4e1_dp*t297*t443 + 0.4e1_dp*t439 &
    2259              :                              *t299 + 0.4e1_dp*t441*t299 + 0.12e2_dp*t113*t1107 + &
    2260            0 :                              0.4e1_dp*t113*t289*chirhoarhob
    2261              :                      u_c_abrhoarhob = -0.2e1_dp*t906*t480 + 0.2e1_dp*t911*t914 &
    2262            0 :                                       *s_avg_2rhob
    2263              : 
    2264            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2265              :                         exc_rhoa_rhob = scale_c*(((e_c_u_0rhoarhob + (0.2e1_dp*t260* &
    2266              :                                                                       rsrhoarhob*t92 - t719*t1047 - t1049*t721 + 0.2e1_dp*t726* &
    2267              :                                                                       t279*t424 - t266*(-t731*t981/0.4e1_dp + t267*rsrhoarhob/ &
    2268              :                                                                       0.2e1_dp + beta_2_3*rsrhoarhob + 0.3e1_dp/0.4e1_dp*t737*t981 &
    2269              :                                                                          + 0.3e1_dp/0.2e1_dp*t271*rsrhoarhob + t86*t742*t993 + t86 &
    2270              :                                                                              *t84*rsrhoarhob*t232 - t86*t84*t993)*t278 - t757*t277 &
    2271              :                                                                       *t759*t80*t424/0.2e1_dp)*f*t110 + alpha_crhoa*frhob* &
    2272              :                                                    t110 - 0.4e1_dp*t285*t435 + alpha_crhob*frhoa*t110 + alpha_c &
    2273              :                                                    *frhoarhob*t110 - 0.4e1_dp*t287*t435 - 0.4e1_dp*t431* &
    2274              :                                                    t291 - 0.4e1_dp*t433*t291 - 0.12e2_dp*t105*t106*t1107 + &
    2275              :                                                    t1136)*rho + epsilon_c_unifrhoa + epsilon_c_unifrhob)*gc_ab + &
    2276              :                                                  e_lsda_c_abrhoa*gc_abrhob + e_lsda_c_abrhob*gc_abrhoa + &
    2277              :                                                  e_lsda_c_ab*(u_c_abrhoarhob*t170 + 0.2e1_dp*u_c_abrhoa* &
    2278            0 :                                                               u_c_abrhob*c_cab_2 + u_c_ab*u_c_abrhoarhob*c_cab_2))
    2279            0 :                         e_r_r(ii) = e_r_r(ii) + 0.5_dp*exc_rhoa_rhob
    2280              :                      END IF
    2281              : 
    2282            0 :                      t1152 = t20**2
    2283            0 :                      t1157 = t365*my_rhob
    2284            0 :                      s_brhobrhob = 0.28e2_dp/0.9e1_dp*my_norm_drhob/t20/t1157
    2285            0 :                      t1161 = s_brhob**2
    2286            0 :                      t1165 = t194*s_b_2
    2287            0 :                      t1172 = s_b_2**2
    2288            0 :                      t1173 = t575*t1172
    2289            0 :                      t1175 = 0.1e1_dp/t375/t28
    2290              :                      u_x_brhobrhob = 0.2e1_dp*gamma_x*t1161*t29 - 0.10e2_dp* &
    2291              :                                      t1165*t376*t1161 + 0.2e1_dp*t370*t29*s_brhobrhob + &
    2292              :                                      0.8e1_dp*t1173*t1175*t1161 - 0.2e1_dp*t374*t376* &
    2293            0 :                                      s_brhobrhob
    2294            0 :                      u_x_b1rhob = u_x_brhob
    2295            0 :                      chirhobrhob = 0.2e1_dp*t208 + 0.2e1_dp*t601
    2296            0 :                      rsrhobrhob = rsrhoarhob
    2297            0 :                      t1201 = t396**2
    2298            0 :                      t1205 = rsrhob**2
    2299              :                      e_c_u_0rhobrhob = -0.2e1_dp*t216*rsrhobrhob*t56 + 0.2e1_dp* &
    2300              :                                        t976*t974 - 0.2e1_dp*t626*t1201*t236 + t222*(-t632* &
    2301              :                                                                              t1205/0.4e1_dp + t224*rsrhobrhob/0.2e1_dp + beta_2_1* &
    2302              :                                                                              rsrhobrhob + 0.3e1_dp/0.4e1_dp*t639*t1205 + 0.3e1_dp/ &
    2303              :                                                                           0.2e1_dp*t228*rsrhobrhob + t50*t644*t1205*t647 + t50*t48 &
    2304              :                                                                                *rsrhobrhob*t232 - t50*t48*t1205*t647)*t236 + t661* &
    2305            0 :                                        t1201*t663*t42/0.2e1_dp
    2306            0 :                      e_c_u_01rhob = e_c_u_0rhob
    2307            0 :                      t1236 = t410**2
    2308            0 :                      t1270 = t424**2
    2309            0 :                      alpha_c1rhob = alpha_crhob
    2310            0 :                      t1299 = chirhob**2
    2311              :                      frhobrhob = (0.4e1_dp/0.9e1_dp*t765*t1299 + 0.4e1_dp/ &
    2312              :                                   0.3e1_dp*t99*chirhobrhob + 0.4e1_dp/0.9e1_dp*t772*t1299 - &
    2313            0 :                                   0.4e1_dp/0.3e1_dp*t102*chirhobrhob)*t97
    2314            0 :                      f1rhob = frhob
    2315            0 :                      t1321 = alpha_c1rhob*f
    2316            0 :                      t1324 = alpha_c*f1rhob
    2317            0 :                      t1341 = e_c_u_1rhob - e_c_u_01rhob
    2318            0 :                      t1348 = t1341*f
    2319            0 :                      t1351 = t112*f1rhob
    2320              :                      t1360 = -0.4e1_dp*t105*t290*chirhobrhob + (-0.2e1_dp*t239 &
    2321              :                                                                 *rsrhobrhob*t74 + 0.2e1_dp*t1014*t1012 - 0.2e1_dp*t678* &
    2322              :                                                                 t1236*t257 + t245*(-t683*t1205/0.4e1_dp + t246*rsrhobrhob &
    2323              :                                                                          /0.2e1_dp + beta_2_2*rsrhobrhob + 0.3e1_dp/0.4e1_dp*t689* &
    2324              :                                                                         t1205 + 0.3e1_dp/0.2e1_dp*t250*rsrhobrhob + t68*t694*t1205 &
    2325              :                                                                              *t647 + t68*t66*rsrhobrhob*t232 - t68*t66*t1205*t647) &
    2326              :                                                                 *t257 + t709*t1236*t711*t62/0.2e1_dp - e_c_u_0rhobrhob)*f &
    2327              :                              *t108 + t438*f1rhob*t108 + 0.4e1_dp*t439*t443 + t1341* &
    2328              :                              frhob*t108 + t112*frhobrhob*t108 + 0.4e1_dp*t441*t443 + &
    2329              :                              0.4e1_dp*t1348*t443 + 0.4e1_dp*t1351*t443 + 0.12e2_dp*t113 &
    2330            0 :                              *t107*t1299 + 0.4e1_dp*t113*t289*chirhobrhob
    2331              :                      epsilon_c_unif1rhob = e_c_u_01rhob + t1321*t110 + t1324*t110 - &
    2332            0 :                                            t437 + t1348*t108 + t1351*t108 + t445
    2333            0 :                      t1368 = t365**2
    2334              :                      rs_brhobrhob = -t4/t446/t138*t606/t1368/0.18e2_dp &
    2335            0 :                                     + t4*t448/t1157/0.6e1_dp
    2336            0 :                      t1388 = t471**2
    2337            0 :                      t1394 = rs_brhob**2
    2338            0 :                      t1406 = rs_b**2
    2339            0 :                      t1407 = 0.1e1_dp/t1406
    2340            0 :                      t1419 = t456**2
    2341            0 :                      t1422 = t155**2
    2342            0 :                      epsilon_c_unif_b1rhob = epsilon_c_unif_brhob
    2343            0 :                      s_b_2rhobrhob = 0.2e1_dp*t1161 + 0.2e1_dp*s_b*s_brhobrhob
    2344            0 :                      s_b_21rhob = s_b_2rhob
    2345            0 :                      s_avg_2rhobrhob = s_b_2rhobrhob/0.2e1_dp
    2346            0 :                      s_avg_21rhob = s_b_21rhob/0.2e1_dp
    2347              :                      e_lsda_c_brhobrhob = (-0.2e1_dp*t239*rs_brhobrhob*t156 + &
    2348              :                                            0.2e1_dp*alpha_1_2*rs_brhob*t457*t471*t472 - 0.2e1_dp* &
    2349              :                                            t142/t456/t151*t1388*t472 + t458*(-beta_1_2/t147*t1394 &
    2350              :                                                                              /0.4e1_dp + t460*rs_brhobrhob/0.2e1_dp + beta_2_2* &
    2351              :                                                                             rs_brhobrhob + 0.3e1_dp/0.4e1_dp*beta_3_2*t459*t1394 + &
    2352              :                                                                             0.3e1_dp/0.2e1_dp*t464*rs_brhobrhob + t150*t694*t1394* &
    2353              :                                                                              t1407 + t150*t66*rs_brhobrhob*t468 - t150*t66*t1394* &
    2354              :                                                                              t1407)*t472 + t142/t1419*t1388/t1422*t62/0.2e1_dp)* &
    2355            0 :                                           my_rhob + epsilon_c_unif_brhob + epsilon_c_unif_b1rhob
    2356            0 :                      e_lsda_c_b1rhob = epsilon_c_unif_b1rhob*my_rhob + epsilon_c_unif_b
    2357            0 :                      t1436 = t336*s_avg_2rhob
    2358            0 :                      t1437 = t339*s_avg_21rhob
    2359            0 :                      t1440 = t913*s_avg_2rhob
    2360              :                      u_c_abrhobrhob = gamma_c_ab*s_avg_2rhobrhob*t162 - 0.2e1_dp* &
    2361              :                                       t1436*t1437 + 0.2e1_dp*t911*t1440*s_avg_21rhob - t337*t339 &
    2362            0 :                                       *s_avg_2rhobrhob
    2363            0 :                      u_c_ab1rhob = gamma_c_ab*s_avg_21rhob*t162 - t337*t1437
    2364            0 :                      t1451 = t344*s_b_2rhob
    2365            0 :                      t1452 = t486*s_b_21rhob
    2366            0 :                      t1455 = t929*s_b_2
    2367            0 :                      t1457 = 0.1e1_dp/t485/t167
    2368            0 :                      t1458 = t1457*s_b_2rhob
    2369              :                      u_c_brhobrhob = gamma_c_ss*s_b_2rhobrhob*t168 - 0.2e1_dp* &
    2370              :                                      t1451*t1452 + 0.2e1_dp*t1455*t1458*s_b_21rhob - t484*t486 &
    2371            0 :                                      *s_b_2rhobrhob
    2372            0 :                      u_c_b1rhob = gamma_c_ss*s_b_21rhob*t168 - t484*t1452
    2373              : 
    2374            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2375              :                         exc_rhob_rhob = scale_x*(-t4*t6/t1152*gx_b/ &
    2376              :                                                  0.6e1_dp + e_lsda_x_brhob*(u_x_b1rhob*t31 + u_x_b*u_x_b1rhob* &
    2377              :                                                                      c_x_2) + e_lsda_x_brhob*gx_brhob + e_lsda_x_b*(u_x_brhobrhob* &
    2378              :                                                                                 t31 + 0.2e1_dp*u_x_brhob*u_x_b1rhob*c_x_2 + u_x_b* &
    2379              :                                                                    u_x_brhobrhob*c_x_2)) + scale_c*(((e_c_u_0rhobrhob + (0.2e1_dp* &
    2380              :                                                                             t260*rsrhobrhob*t92 - 0.2e1_dp*t1049*t1047 + 0.2e1_dp* &
    2381              :                                                                               t726*t1270*t278 - t266*(-t731*t1205/0.4e1_dp + t267* &
    2382              :                                                                      rsrhobrhob/0.2e1_dp + beta_2_3*rsrhobrhob + 0.3e1_dp/0.4e1_dp &
    2383              :                                                                             *t737*t1205 + 0.3e1_dp/0.2e1_dp*t271*rsrhobrhob + t86* &
    2384              :                                                                               t742*t1205*t647 + t86*t84*rsrhobrhob*t232 - t86*t84* &
    2385              :                                                                                t1205*t647)*t278 - t757*t1270*t759*t80/0.2e1_dp)*f* &
    2386              :                                                                              t110 + alpha_crhob*f1rhob*t110 - 0.4e1_dp*t431*t435 + &
    2387              :                                                                        alpha_c1rhob*frhob*t110 + alpha_c*frhobrhob*t110 - 0.4e1_dp &
    2388              :                                                                           *t433*t435 - 0.4e1_dp*t1321*t435 - 0.4e1_dp*t1324*t435 - &
    2389              :                                                                        0.12e2_dp*t105*t796*t1299 + t1360)*rho + epsilon_c_unifrhob &
    2390              :                                                                                + epsilon_c_unif1rhob - e_lsda_c_brhobrhob)*gc_ab + &
    2391              :                                                                            e_lsda_c_abrhob*(u_c_ab1rhob*t170 + u_c_ab*u_c_ab1rhob* &
    2392              :                                                                             c_cab_2) + (epsilon_c_unif1rhob*rho + epsilon_c_unif - &
    2393              :                                                                      e_lsda_c_b1rhob)*gc_abrhob + e_lsda_c_ab*(u_c_abrhobrhob*t170 &
    2394              :                                                                                + 0.2e1_dp*u_c_abrhob*u_c_ab1rhob*c_cab_2 + u_c_ab* &
    2395              :                                                                                u_c_abrhobrhob*c_cab_2) + e_lsda_c_brhobrhob*gc_b + &
    2396              :                                                                        e_lsda_c_brhob*(u_c_b1rhob*t176 + u_c_b*u_c_b1rhob*c_css_2) &
    2397              :                                                                      + e_lsda_c_b1rhob*gc_brhob + e_lsda_c_b*(u_c_brhobrhob*t176 + &
    2398              :                                                                        0.2e1_dp*u_c_brhob*u_c_b1rhob*c_css_2 + u_c_b*u_c_brhobrhob &
    2399            0 :                                                                                                                           *c_css_2))
    2400            0 :                         e_r_r(ii) = e_r_r(ii) + 0.5_dp*0.5_dp*exc_rhob_rhob
    2401              :                      END IF
    2402              : 
    2403            0 :                      s_arhoanorm_drhoa = -0.4e1_dp/0.3e1_dp*t188
    2404              :                      u_x_arhoanorm_drhoa = 0.2e1_dp*gamma_x*s_anorm_drhoa*t192 - &
    2405              :                                            0.10e2_dp*t568*t199*s_anorm_drhoa + 0.2e1_dp*t191*t16* &
    2406              :                                            s_arhoanorm_drhoa + 0.8e1_dp*t577*t579*s_arhoa*s_anorm_drhoa &
    2407            0 :                                            - 0.2e1_dp*t196*t198*s_arhoanorm_drhoa
    2408              :                      s_a_2rhoanorm_drhoa = 0.2e1_dp*s_anorm_drhoa*s_arhoa + &
    2409            0 :                                            0.2e1_dp*s_a*s_arhoanorm_drhoa
    2410            0 :                      s_avg_2rhoanorm_drhoa = s_a_2rhoanorm_drhoa/0.2e1_dp
    2411              :                      u_c_abrhoanorm_drhoa = gamma_c_ab*s_avg_2rhoanorm_drhoa*t162 - &
    2412              :                                             0.2e1_dp*t906*t512 + 0.2e1_dp*t911*t914*s_avg_2norm_drhoa &
    2413            0 :                                             - t337*t339*s_avg_2rhoanorm_drhoa
    2414              :                      u_c_arhoanorm_drhoa = gamma_c_ss*s_a_2rhoanorm_drhoa*t165 - &
    2415              :                                            0.2e1_dp*t925*t516 + 0.2e1_dp*t930*t933*s_a_2norm_drhoa - &
    2416            0 :                                            t345*t347*s_a_2rhoanorm_drhoa
    2417              : 
    2418            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2419              :                         exc_rhoa_norm_drhoa = scale_x*(e_lsda_x_arhoa*gx_anorm_drhoa + &
    2420              :                                                        e_lsda_x_a*(u_x_arhoanorm_drhoa*t18 + 0.2e1_dp*u_x_arhoa* &
    2421              :                                                                    u_x_anorm_drhoa*c_x_2 + u_x_a*u_x_arhoanorm_drhoa*c_x_2)) + &
    2422              :                                               scale_c*(e_lsda_c_abrhoa*gc_abnorm_drhoa + e_lsda_c_ab*( &
    2423              :                                                        u_c_abrhoanorm_drhoa*t170 + 0.2e1_dp*u_c_abrhoa* &
    2424              :                                                        u_c_abnorm_drhoa*c_cab_2 + u_c_ab*u_c_abrhoanorm_drhoa*c_cab_2 &
    2425              :                                                        ) + e_lsda_c_arhoa*gc_anorm_drhoa + e_lsda_c_a*( &
    2426              :                                                        u_c_arhoanorm_drhoa*t173 + 0.2e1_dp*u_c_arhoa*u_c_anorm_drhoa &
    2427            0 :                                                        *c_css_2 + u_c_a*u_c_arhoanorm_drhoa*c_css_2))
    2428            0 :                         e_r_ndr(ii) = e_r_ndr(ii) + 0.5_dp*0.5_dp*exc_rhoa_norm_drhoa
    2429              :                      END IF
    2430              : 
    2431              :                      u_c_abrhobnorm_drhoa = -0.2e1_dp*t1436*t512 + 0.2e1_dp*t911 &
    2432            0 :                                             *t1440*s_avg_2norm_drhoa
    2433              : 
    2434            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2435              :                         exc_rhob_norm_drhoa = scale_c*(e_lsda_c_abrhob*gc_abnorm_drhoa &
    2436              :                                                        + e_lsda_c_ab*(u_c_abrhobnorm_drhoa*t170 + 0.2e1_dp* &
    2437              :                                                                       u_c_abrhob*u_c_abnorm_drhoa*c_cab_2 + u_c_ab* &
    2438            0 :                                                                       u_c_abrhobnorm_drhoa*c_cab_2))
    2439            0 :                         e_r_ndr(ii) = e_r_ndr(ii) + 0.5_dp*0.5_dp*exc_rhob_norm_drhoa
    2440              :                      END IF
    2441              : 
    2442            0 :                      t1571 = s_anorm_drhoa**2
    2443              :                      u_x_anorm_drhoanorm_drhoa = 0.2e1_dp*gamma_x*t1571*t16 - &
    2444            0 :                                                  0.10e2_dp*t568*t198*t1571 + 0.8e1_dp*t577*t579*t1571
    2445            0 :                      s_a_2norm_drhoanorm_drhoa = 0.2e1_dp*t1571
    2446            0 :                      s_a_21norm_drhoa = s_a_2norm_drhoa
    2447            0 :                      s_avg_2norm_drhoanorm_drhoa = s_a_2norm_drhoanorm_drhoa/0.2e1_dp
    2448            0 :                      s_avg_21norm_drhoa = s_a_21norm_drhoa/0.2e1_dp
    2449            0 :                      t1589 = t336*s_avg_2norm_drhoa
    2450            0 :                      t1590 = t339*s_avg_21norm_drhoa
    2451            0 :                      t1593 = t913*s_avg_2norm_drhoa
    2452              :                      u_c_abnorm_drhoanorm_drhoa = gamma_c_ab* &
    2453              :                                                   s_avg_2norm_drhoanorm_drhoa*t162 - 0.2e1_dp*t1589*t1590 + &
    2454              :                                                   0.2e1_dp*t911*t1593*s_avg_21norm_drhoa - t337*t339* &
    2455            0 :                                                   s_avg_2norm_drhoanorm_drhoa
    2456            0 :                      t1605 = t347*s_a_21norm_drhoa
    2457              :                      u_c_anorm_drhoanorm_drhoa = gamma_c_ss*s_a_2norm_drhoanorm_drhoa &
    2458              :                                                  *t165 - 0.2e1_dp*t344*s_a_2norm_drhoa*t1605 + 0.2e1_dp* &
    2459              :                                                  t930*t932*s_a_2norm_drhoa*s_a_21norm_drhoa - t345*t347* &
    2460            0 :                                                  s_a_2norm_drhoanorm_drhoa
    2461              : 
    2462            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2463              :                         exc_norm_drhoa_norm_drhoa = scale_x*e_lsda_x_a*( &
    2464              :                                                     u_x_anorm_drhoanorm_drhoa*t18 + 0.2e1_dp*u_x_anorm_drhoa**2* &
    2465              :                                                     c_x_2 + u_x_a*u_x_anorm_drhoanorm_drhoa*c_x_2) + scale_c*( &
    2466              :                                                     e_lsda_c_ab*(u_c_abnorm_drhoanorm_drhoa*t170 + 0.2e1_dp* &
    2467              :                                                                  u_c_abnorm_drhoa*(gamma_c_ab*s_avg_21norm_drhoa*t162 - t337* &
    2468              :                                                                      t1590)*c_cab_2 + u_c_ab*u_c_abnorm_drhoanorm_drhoa*c_cab_2) + &
    2469              :                                                     e_lsda_c_a*(u_c_anorm_drhoanorm_drhoa*t173 + 0.2e1_dp* &
    2470              :                                                                 u_c_anorm_drhoa*(gamma_c_ss*s_a_21norm_drhoa*t165 - t345* &
    2471            0 :                                                                           t1605)*c_css_2 + u_c_a*u_c_anorm_drhoanorm_drhoa*c_css_2))
    2472            0 :                         e_ndr_ndr(ii) = e_ndr_ndr(ii) + 0.5_dp*0.5_dp*exc_norm_drhoa_norm_drhoa
    2473              :                      END IF
    2474              : 
    2475              :                      u_c_abrhoanorm_drhob = -0.2e1_dp*t906*t539 + 0.2e1_dp*t911* &
    2476            0 :                                             t914*s_avg_2norm_drhob
    2477              : 
    2478            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2479              :                         exc_rhoa_norm_drhob = scale_c*(e_lsda_c_abrhoa*gc_abnorm_drhob &
    2480              :                                                        + e_lsda_c_ab*(u_c_abrhoanorm_drhob*t170 + 0.2e1_dp* &
    2481              :                                                                       u_c_abrhoa*u_c_abnorm_drhob*c_cab_2 + u_c_ab* &
    2482            0 :                                                                       u_c_abrhoanorm_drhob*c_cab_2))
    2483            0 :                         e_r_ndr(ii) = e_r_ndr(ii) + 0.5_dp*0.5_dp*exc_rhoa_norm_drhob
    2484              :                      END IF
    2485              : 
    2486            0 :                      s_brhobnorm_drhob = -0.4e1_dp/0.3e1_dp*t367
    2487              :                      u_x_brhobnorm_drhob = 0.2e1_dp*gamma_x*s_bnorm_drhob*t371 - &
    2488              :                                            0.10e2_dp*t1165*t377*s_bnorm_drhob + 0.2e1_dp*t370*t29* &
    2489              :                                            s_brhobnorm_drhob + 0.8e1_dp*t1173*t1175*s_brhob* &
    2490            0 :                                            s_bnorm_drhob - 0.2e1_dp*t374*t376*s_brhobnorm_drhob
    2491              :                      s_b_2rhobnorm_drhob = 0.2e1_dp*s_bnorm_drhob*s_brhob + &
    2492            0 :                                            0.2e1_dp*s_b*s_brhobnorm_drhob
    2493            0 :                      s_avg_2rhobnorm_drhob = s_b_2rhobnorm_drhob/0.2e1_dp
    2494              :                      u_c_abrhobnorm_drhob = gamma_c_ab*s_avg_2rhobnorm_drhob*t162 - &
    2495              :                                             0.2e1_dp*t1436*t539 + 0.2e1_dp*t911*t1440* &
    2496            0 :                                             s_avg_2norm_drhob - t337*t339*s_avg_2rhobnorm_drhob
    2497              :                      u_c_brhobnorm_drhob = gamma_c_ss*s_b_2rhobnorm_drhob*t168 - &
    2498              :                                            0.2e1_dp*t1451*t543 + 0.2e1_dp*t1455*t1458*s_b_2norm_drhob &
    2499            0 :                                            - t484*t486*s_b_2rhobnorm_drhob
    2500              : 
    2501            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2502              :                         exc_rhob_norm_drhob = scale_x*(e_lsda_x_brhob*gx_bnorm_drhob + &
    2503              :                                                        e_lsda_x_b*(u_x_brhobnorm_drhob*t31 + 0.2e1_dp*u_x_brhob* &
    2504              :                                                                    u_x_bnorm_drhob*c_x_2 + u_x_b*u_x_brhobnorm_drhob*c_x_2)) + &
    2505              :                                               scale_c*(e_lsda_c_abrhob*gc_abnorm_drhob + e_lsda_c_ab*( &
    2506              :                                                        u_c_abrhobnorm_drhob*t170 + 0.2e1_dp*u_c_abrhob* &
    2507              :                                                        u_c_abnorm_drhob*c_cab_2 + u_c_ab*u_c_abrhobnorm_drhob*c_cab_2 &
    2508              :                                                        ) + e_lsda_c_brhob*gc_bnorm_drhob + e_lsda_c_b*( &
    2509              :                                                        u_c_brhobnorm_drhob*t176 + 0.2e1_dp*u_c_brhob*u_c_bnorm_drhob &
    2510            0 :                                                        *c_css_2 + u_c_b*u_c_brhobnorm_drhob*c_css_2))
    2511            0 :                         e_r_ndr(ii) = e_r_ndr(ii) + 0.5_dp*0.5_dp*exc_rhob_norm_drhob
    2512              :                      END IF
    2513              : 
    2514              :                      u_c_abnorm_drhoanorm_drhob = -0.2e1_dp*t1589*t539 + 0.2e1_dp* &
    2515            0 :                                                   t911*t1593*s_avg_2norm_drhob
    2516              : 
    2517            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2518              :                         exc_norm_drhoa_norm_drhob = scale_c*e_lsda_c_ab*( &
    2519              :                                                     u_c_abnorm_drhoanorm_drhob*t170 + 0.2e1_dp*u_c_abnorm_drhoa* &
    2520              :                                                     u_c_abnorm_drhob*c_cab_2 + u_c_ab*u_c_abnorm_drhoanorm_drhob* &
    2521            0 :                                                     c_cab_2)
    2522            0 :                         e_ndr_ndr(ii) = e_ndr_ndr(ii) + 0.5_dp*exc_norm_drhoa_norm_drhob
    2523              :                      END IF
    2524              : 
    2525            0 :                      t1719 = s_bnorm_drhob**2
    2526              :                      u_x_bnorm_drhobnorm_drhob = 0.2e1_dp*gamma_x*t1719*t29 - &
    2527            0 :                                                  0.10e2_dp*t1165*t376*t1719 + 0.8e1_dp*t1173*t1175*t1719
    2528            0 :                      s_b_2norm_drhobnorm_drhob = 0.2e1_dp*t1719
    2529            0 :                      s_b_21norm_drhob = s_b_2norm_drhob
    2530            0 :                      s_avg_2norm_drhobnorm_drhob = s_b_2norm_drhobnorm_drhob/0.2e1_dp
    2531            0 :                      s_avg_21norm_drhob = s_b_21norm_drhob/0.2e1_dp
    2532            0 :                      t1738 = t339*s_avg_21norm_drhob
    2533              :                      u_c_abnorm_drhobnorm_drhob = gamma_c_ab* &
    2534              :                                                   s_avg_2norm_drhobnorm_drhob*t162 - 0.2e1_dp*t336* &
    2535              :                                                   s_avg_2norm_drhob*t1738 + 0.2e1_dp*t911*t913* &
    2536              :                                                   s_avg_2norm_drhob*s_avg_21norm_drhob - t337*t339* &
    2537            0 :                                                   s_avg_2norm_drhobnorm_drhob
    2538            0 :                      t1753 = t486*s_b_21norm_drhob
    2539              :                      u_c_bnorm_drhobnorm_drhob = gamma_c_ss*s_b_2norm_drhobnorm_drhob &
    2540              :                                                  *t168 - 0.2e1_dp*t344*s_b_2norm_drhob*t1753 + 0.2e1_dp* &
    2541              :                                                  t1455*t1457*s_b_2norm_drhob*s_b_21norm_drhob - t484*t486* &
    2542            0 :                                                  s_b_2norm_drhobnorm_drhob
    2543              : 
    2544            0 :                      IF (grad_deriv > 1 .OR. grad_deriv == -2) THEN
    2545              :                         exc_norm_drhob_norm_drhob = scale_x*e_lsda_x_b*( &
    2546              :                                                     u_x_bnorm_drhobnorm_drhob*t31 + 0.2e1_dp*u_x_bnorm_drhob**2* &
    2547              :                                                     c_x_2 + u_x_b*u_x_bnorm_drhobnorm_drhob*c_x_2) + scale_c*( &
    2548              :                                                     e_lsda_c_ab*(u_c_abnorm_drhobnorm_drhob*t170 + 0.2e1_dp* &
    2549              :                                                                  u_c_abnorm_drhob*(gamma_c_ab*s_avg_21norm_drhob*t162 - t337* &
    2550              :                                                                      t1738)*c_cab_2 + u_c_ab*u_c_abnorm_drhobnorm_drhob*c_cab_2) + &
    2551              :                                                     e_lsda_c_b*(u_c_bnorm_drhobnorm_drhob*t176 + 0.2e1_dp* &
    2552              :                                                                 u_c_bnorm_drhob*(gamma_c_ss*s_b_21norm_drhob*t168 - t484* &
    2553            0 :                                                                           t1753)*c_css_2 + u_c_b*u_c_bnorm_drhobnorm_drhob*c_css_2))
    2554            0 :                         e_ndr_ndr(ii) = e_ndr_ndr(ii) + 0.5_dp*0.5_dp*exc_norm_drhob_norm_drhob
    2555              :                      END IF
    2556              :                   END IF ! <1 || >1
    2557              :                END IF ! /=0
    2558              :             END IF ! rho>epsilon_rho
    2559              :          END DO
    2560              : !$OMP      END DO
    2561              :       END SELECT
    2562          607 :    END SUBROUTINE b97_lda_calc
    2563              : 
    2564              : END MODULE xc_b97
        

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