!-------------------------------------- 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
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!
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!without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
!See the above mentioned License/Disclaimer for more details.
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!
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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: mradf2_8.ftn,v 1.4 2011/11/29 15:45:00 armaanl Exp $
C
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      SUBROUTINE MRADF2_8 (M,IDO,L1,CC,IM1,IN1,CH,IM2,IN2,WA1) 2
#include "taglam4d.cdk"
      REAL*8       CH(IN2,IDO,2,L1) ,CC(IN1,IDO,L1,2) , WA1(IDO)
C
      M1D = (M-1)*IM1+1
      M2S = 1-IM2
      DO 101 K=1,L1
         M2 = M2S
         DO 1001 M1=1,M1D,IM1
         M2 = M2+IM2
         CH(M2,1,1,K) = CC(M1,1,K,1)+CC(M1,1,K,2)
         CH(M2,IDO,2,K) = CC(M1,1,K,1)-CC(M1,1,K,2)
 1001    CONTINUE
  101 CONTINUE
      IF (IDO-2) 107,105,102
  102 IDP2 = IDO+2
      DO 104 K=1,L1
         DO 103 I=3,IDO,2
            IC = IDP2-I
            M2 = M2S
            DO 1003 M1=1,M1D,IM1
            M2 = M2+IM2
            CH(M2,I,1,K) = CC(M1,I,K,1)+(WA1(I-2)*CC(M1,I,K,2)-
     1       WA1(I-1)*CC(M1,I-1,K,2))
            CH(M2,IC,2,K) = (WA1(I-2)*CC(M1,I,K,2)-WA1(I-1)*
     1       CC(M1,I-1,K,2))-CC(M1,I,K,1)
            CH(M2,I-1,1,K) = CC(M1,I-1,K,1)+(WA1(I-2)*CC(M1,I-1,K,2)+
     1       WA1(I-1)*CC(M1,I,K,2))
            CH(M2,IC-1,2,K) = CC(M1,I-1,K,1)-(WA1(I-2)*CC(M1,I-1,K,2)+
     1       WA1(I-1)*CC(M1,I,K,2))
 1003       CONTINUE
  103    CONTINUE
  104 CONTINUE
      IF (MOD(IDO,2) .EQ. 1) RETURN
  105 DO 106 K=1,L1
         M2 = M2S
         DO 1006 M1=1,M1D,IM1
         M2 = M2+IM2
         CH(M2,1,2,K) = -CC(M1,IDO,K,2)
         CH(M2,IDO,1,K) = CC(M1,IDO,K,1)
 1006    CONTINUE
  106 CONTINUE
  107 RETURN
      END