!-------------------------------------- LICENCE BEGIN ------------------------------------
!Environment Canada - Atmospheric Science and Technology License/Disclaimer, 
!                     version 3; Last Modified: May 7, 2008.
!This is free but copyrighted software; you can use/redistribute/modify it under the terms 
!of the Environment Canada - Atmospheric Science and Technology License/Disclaimer 
!version 3 or (at your option) any later version that should be found at: 
!http://collaboration.cmc.ec.gc.ca/science/rpn.comm/license.html 
!
!This software is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; 
!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
!See the above mentioned License/Disclaimer for more details.
!You should have received a copy of the License/Disclaimer along with this software; 
!if not, you can write to: EC-RPN COMM Group, 2121 TransCanada, suite 500, Dorval (Quebec), 
!CANADA, H9P 1J3; or send e-mail to service.rpn@ec.gc.ca
!-------------------------------------- LICENCE END --------------------------------------
***s/r adw_interp - Interpolation of one rhs
*
#include "model_macros_f.h"
*

      subroutine adw_interp ( F_out, F_in, F_u, F_v, 8,11
     %                        F_wind_L, F_mono_L, DIST_DIM, Nk,i0,in,j0,jn )
*
      implicit none
*
      logical F_wind_L, F_mono_L
*
      integer DIST_DIM, Nk, i0,in,j0,jn
*
      real F_out (DIST_SHAPE, Nk),
     %     F_in  (DIST_SHAPE, Nk)
      real F_u(*), F_v(*)
*
*author
*     alain patoine
*
*revision
* v2_31 - Tanguay M.        - correction parameters adw_vder 
* v3_00 - Desgagne & Lee    - Lam configuration
* v3_10 - Corbeil & Desgagne & Lee - AIXport+Opti+OpenMP
* v3_20 - Gravel & Valin & Tanguay - Lagrange 3D
* v3_20 - McTaggart-Cowan   - Add semi-cubic Lagrangian interpolation
* v3_30 - Desgagne          - Moved semi-cubic Lag interp to adw_interp2
*
*language
*     fortran 77
*
*object
*     see id section
*
*arguments
*______________________________________________________________________
*              |                                                 |     |
* NAME         | DESCRIPTION                                     | I/O |
*--------------|-------------------------------------------------|-----|
*              |                                                 |     |
* F_out        | interpolated field                              |  o  |
* F_in         | field to interpolate                            |  i  |
* F_wind_L     | switch: .true. : field to interpolate is a wind |  i  |
*              |                  like quantity                  |  i  |
* F_mono_L     | switch: .true. : monotonic interpolation        |  i  |
*______________|_________________________________________________|_____|
*
*implicits
#include "glb_ld.cdk"
#include "adw.cdk"
*
************************************************************************
      integer i, j, k, nij, nijk, nijkag, n, dest_ni
*
      real dummy
*
      nij    = l_ni   *l_nj
      nijk   = l_ni   *l_nj   *l_nk
      nijkag = Adw_nit*Adw_njt*l_nk
*
************************************************************************
*
* Adjust field to advection grid
*
* Compute extension beyond the pole if appropriate
*
************************************************************************
      if (G_lam) then
          n=0
          dest_ni=l_ni
      else
          n=999
          dest_ni=G_ni
      endif
      call rpn_comm_xch_halox (F_in, LDIST_DIM, l_ni, l_nj, l_nk,
     % Adw_halox, Adw_haloy, G_periodx, G_periody, F_u, -Adw_halox+1,
     % Adw_nic+Adw_halox, -Adw_haloy+1, Adw_njc+Adw_haloy, dest_ni, n)
*
      if (.not.G_lam) then
      if ( l_south ) then
*     
         if ( F_wind_L ) then
            call adw_pol0 (F_u, 0, Adw_nic,Adw_halox,Adw_njc,
     %                     Adw_haloy,l_nk)
         else
            call adw_pols (F_u,Adw_wx_8, 0, Adw_nic,Adw_halox,
     %                     Adw_njc,Adw_haloy,l_nk)
         endif
            call adw_polx (F_u,Adw_xg_8,.true.,Adw_nic,Adw_halox,
     %                     Adw_njc,Adw_haloy,l_nk)
      endif
*     
      if ( l_north ) then
*
         if ( F_wind_L ) then
            call adw_pol0 (F_u,Adw_njc+1,Adw_nic,Adw_halox,Adw_njc,
     %                     Adw_haloy,l_nk)
         else
            call adw_pols (F_u,Adw_wx_8, Adw_njc+1,Adw_nic,Adw_halox,
     %                     Adw_njc,Adw_haloy,l_nk)
         endif
            call adw_polx (F_u,Adw_xg_8,.false.,Adw_nic,Adw_halox,
     %                     Adw_njc,Adw_haloy,l_nk)
      endif
      endif
************************************************************************
*
* Interpolate
*
************************************************************************
      call adw_vder ( F_v, F_u, Adw_nit, Adw_njt, l_nk ) !2nd deriv for spline
      call adw_tricub ( Adw_wrkc, F_u, F_v,
     %                  Adw_n1, Adw_capx1, Adw_xgg1,
     %                  Adw_xdd1, Adw_capy1, Adw_ygg1,
     %                  Adw_ydd1, Adw_capz1,Adw_cz1,
     %                  nijk, F_mono_L,i0,in,j0,jn,l_nk)
*
      if (.not.G_lam) then
      if ( Adw_fro_a .gt. 0 ) then
         call adw_tricub ( Adw_wrka, F_u, F_v,
     %                     Adw_n2, Adw_capx2, Adw_xgg2,
     %                     Adw_xdd2, Adw_capy2, Adw_ygg2,
     %                     Adw_ydd2, Adw_capz2, Adw_cz2,
     %                     Adw_fro_a, F_mono_L,1,Adw_fro_a,1,1,1)
      endif
*
      call adw_exch_2 ( Adw_wrkb, dummy, dummy,
     %                  Adw_wrka, dummy, dummy,
     %                  Adw_for_n, Adw_for_s, Adw_for_a,
     %                  Adw_fro_n, Adw_fro_s, Adw_fro_a, 1)
*
      if ( Adw_for_a .gt. 0 )
     %   call adw_exch_3 ( Adw_wrkc, dummy, Adw_wrkb, dummy, Adw_c1, 1 )
*
      endif
!$omp parallel
!$omp do
      do k = 1, l_nk
      do j = j0,jn
      do i = i0,in
      F_out(i,j,k) = Adw_wrkc ( (k-1)*nij+(j-1)*l_ni+i )
      enddo
      enddo
      enddo
!$omp enddo
!$omp end parallel
*
      return
      end