!-------------------------------------- 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 --------------------------------------
!
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C
C   FFTPACK 5.0 
C   Copyright (C) 1995-2004, Scientific Computing Division,
C   University Corporation for Atmospheric Research
C   Licensed under the GNU General Public License (GPL)
C
C   Authors:  Paul N. Swarztrauber and Richard A. Valent
C
C   $Id: rfft2i_8.ftn,v 1.4 2011/11/29 15:45:07 armaanl Exp $
C
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      SUBROUTINE RFFT2I_8 (L, M, WSAVE, LENSAV, IER) 4,5
#include "taglam4d.cdk"
      INTEGER L, M, LENSAV, IER
      INTEGER LWSAV,MWSAV
      REAL*8 WSAVE(LENSAV)
C
C Initialize IER
C
      IER = 0
C
C Verify LENSAV
C
      LWSAV =   L+INT(LOG(REAL(L)))+4
      MWSAV =   2*M+INT(LOG(REAL(M)))+4
!      print *,'RFFT2I_8: LWSAV,MWSAV=', LWSAV,MWSAV
      IF (LENSAV .LT. LWSAV+MWSAV) THEN
        IER = 2
        CALL XERFFT ('RFFT2I', 4)
        GO TO 100
      ENDIF
C
      CALL RFFTMI_8 (L, WSAVE(1), L + INT(LOG(REAL(L))) + 4, IER1)
!      do ji=1,lensav
!        print *,'RFFT2I_8: apres RFFTMI_8: ji,wsave(ji)=',ji,wsave(ji)
!      enddo
      IF (IER1 .NE. 0) THEN
        IER = 20
        CALL XERFFT ('RFFT2I',-5)
        GO TO 100
      ENDIF
      CALL CFFTMI_8 (M, WSAVE(L+INT(LOG(REAL(L)))+5), 
     1            2*M+INT(LOG(REAL(M)))+4,IER1)
      IF (IER1 .NE. 0) THEN
        IER = 20
        CALL XERFFT ('RFFT2I',-5)
      ENDIF
!      do ji=1,lensav
!        print *,'RFFT2I_8: apres CFFTMI_8: ji,wsave(ji)=',ji,wsave(ji)
!      enddo
C
  100 CONTINUE
      RETURN
      END