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!                     version 3; Last Modified: May 7, 2008.
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!

      subroutine sulapxy 1
!
!s/r sulapxy: Prepare arrays for computing Laplacian and inverse Laplacian for Euclidean case.
!
! AUTHOR: Luc Fillion - ARMA/EC - 15 Jun 2009.
!
! Revision:
!
! IN/OUT:
! IN:
!
      IMPLICIT  NONE
!
#include "taglam4d.cdk"
#include "comdim.cdk"
#include "comcst.cdk"
#include "comfftla.cdk"
#include "comlun.cdk"
#include "comsp.cdk"
#include "comgrd_param.cdk"
#include "comgemla.cdk"
#include "comlap.cdk"
!
!
      integer jla
      real*8 zcon,zfac,zdlon,zdx2,zp,zq,za,zb
!
!!
      zdlon=rdlon_an(1,1)
      zdx2=(ra*zdlon)**2
      zfac = 2./zdx2
      rlapxy(:) = 0.
      rilapxy(:) = 0.
!
      do jla = 1,nla
        za = 2.*rpi*mwvnbx(jla)
        zp = cos(za/ni)
        zb = 2.*rpi*mwvnby(jla)
        zq = cos(zb/nj)
        zcon = zfac*(zp+zq-2.)
        rlapxy(jla) = zcon
        if(zcon.ne.0.) then
          rilapxy(jla) = 1./zcon
        endif
      enddo
!
      return
      end