SUBROUTINE VRADF2 (MP,IDO,L1,CC,CH,MDIMC,WA1)
C
C     VRFFTPK, VERSION 1, AUGUST 1985
C
      DIMENSION   CH(MDIMC,IDO,2,L1)  ,CC(MDIMC,IDO,L1,2)     ,
     1                WA1(IDO)
      DO 101 K=1,L1
         DO 1001 M=1,MP
         CH(M,1,1,K) = CC(M,1,K,1)+CC(M,1,K,2)
         CH(M,IDO,2,K) = CC(M,1,K,1)-CC(M,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
            DO 1003 M=1,MP
            CH(M,I,1,K) = CC(M,I,K,1)+(WA1(I-2)*CC(M,I,K,2)-
     1       WA1(I-1)*CC(M,I-1,K,2))
            CH(M,IC,2,K) = (WA1(I-2)*CC(M,I,K,2)-WA1(I-1)*
     1       CC(M,I-1,K,2))-CC(M,I,K,1)
            CH(M,I-1,1,K) = CC(M,I-1,K,1)+(WA1(I-2)*CC(M,I-1,K,2)+
     1       WA1(I-1)*CC(M,I,K,2))
            CH(M,IC-1,2,K) = CC(M,I-1,K,1)-(WA1(I-2)*CC(M,I-1,K,2)+
     1       WA1(I-1)*CC(M,I,K,2))
 1003       CONTINUE
  103    CONTINUE
  104 CONTINUE
      IF (MOD(IDO,2) .EQ. 1) RETURN
  105 DO 106 K=1,L1
         DO 1006 M=1,MP
         CH(M,1,2,K) = -CC(M,IDO,K,2)
         CH(M,IDO,1,K) = CC(M,IDO,K,1)
 1006    CONTINUE
  106 CONTINUE
  107 RETURN
      END

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