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!                     version 3; Last Modified: May 7, 2008.
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***s/r  sol_pre_diago -  call diagonal Preconditionner  
*
#include "model_macros_f.h"
*
*

      subroutine  sol_pre_diago ( wk22, wk11, Minx,Maxx,Miny,Maxy, 1
     $                            nil,njl, minx1,maxx1,minx2,maxx2 )
      implicit none
*
      integer Minx,Maxx,Miny,Maxy,nil,njl, minx1,maxx1,minx2,maxx2
      real*8  wk11(*),wk22(*)
*
* author    Abdessamad Qaddouri -  December 2006
*
*revision
* v3_30 - Qaddouri A.       - initial version
*
#include "schm.cdk"
#include "sol.cdk"

      real*8 wint_8 (Minx:Maxx,Miny:Maxy,Schm_nith)
*
*     ---------------------------------------------------------------
*
      call  tab_vec  ( wint_8 , Minx,Maxx,Miny,Maxy,Schm_nith,
     $                 wk11   , sol_i0,sol_in,sol_j0,sol_jn, -1 )
*
      call pre_diago ( wint_8 , wint_8, Minx, Maxx, Miny, Maxy,nil,
     $                    njl,minx1, maxx1, minx2, maxx2,Schm_nith )
*
      call  tab_vec  ( wint_8 , Minx,Maxx,Miny,Maxy,Schm_nith,
     $                 wk22   , sol_i0,sol_in,sol_j0,sol_jn, +1 )
*
*     ---------------------------------------------------------------
*
      return
      end