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

      subroutine scalecorns(pcorns,cdcase) 4
#if defined (DOC)
*
***s/r scalecorns  - To go from nomalized to un-normalized CORNS (or vice-versa)
*
*Author  : L. Fillion - ARMA/EC - 13 mar 2009.
*Revision:
*    -------------------
*Arguments
*    -NONE-
#endif
      IMPLICIT NONE
      character*1 cdcase
      real*8 pcorns(nksdim2,nksdim2,0:nband-1,1)
*implicits
#include "taglam4d.cdk"
#include "comct0.cdk"
#include "comlun.cdk"
#include "comdim.cdk"
#include "comcse1.cdk"
#include "comgrd_param.cdk"
#include "comgrd.cdk"
#include "comcva.cdk"
#include "comfftla.cdk"
#include "comcorr.cdk"
*
      integer jrow,jcol,jband
!
!!
      if(cdcase.eq.'D') then
        do jband = 1, nband
          do jcol = 1,nksdim2
            do jrow = 1,nksdim2
              if(rstddev(jrow,jband-1).gt.0.0.and.rstddev(jcol,jband-1).gt.0.0) then
!               avoid zero corns due to spectral filtering...
                pcorns(jrow,jcol,jband-1,1) = pcorns(jrow,jcol,jband-1,1)
     &           / (rstddev(jrow,jband-1)*rstddev(jcol,jband-1))
              endif
            enddo
          enddo
        enddo
      else if(cdcase.eq.'M') then
        do jband = 1, nband
          do jcol = 1,nksdim2
            do jrow = 1,nksdim2
              pcorns(jrow,jcol,jband-1,1) = pcorns(jrow,jcol,jband-1,1)
     &         * (rstddev(jrow,jband-1)*rstddev(jcol,jband-1))
            enddo
          enddo
        enddo
      endif
!
      return
      end