!CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
! C
!CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
!
! File: cmf5kf.f
!
! Library: FFTPACK 5.0
!
! Authors: Paul N. Swarztrauber and Richard A. Valent
! National Center for Atmospheric Research
! PO 3000, Boulder, Colorado
!
! Date: Wed Mar 29 18:31:13 MST 1995
!
! Description: Lower-level auxiliary routine
!
SUBROUTINE CMF5KF (LOT,IDO,L1,NA,CC,IM1,IN1,CH,IM2,IN2,WA)
REAL CC(2,IN1,L1,IDO,5),CH(2,IN2,L1,5,IDO),WA(IDO,4,2)
DATA TR11,TI11,TR12,TI12 /.3090169943749474,-.9510565162951536, &
&-.8090169943749474,-.5877852522924731/
!
! FFTPACK 5.0 auxiliary routine
!
M1D = (LOT-1)*IM1+1
M2S = 1-IM2
IF (IDO .GT. 1) GO TO 102
SN = 1./REAL(5*L1)
IF (NA .EQ. 1) GO TO 106
DO 101 K=1,L1
DO 101 M1=1,M1D,IM1
TI5 = CC(2,M1,K,1,2)-CC(2,M1,K,1,5)
TI2 = CC(2,M1,K,1,2)+CC(2,M1,K,1,5)
TI4 = CC(2,M1,K,1,3)-CC(2,M1,K,1,4)
TI3 = CC(2,M1,K,1,3)+CC(2,M1,K,1,4)
TR5 = CC(1,M1,K,1,2)-CC(1,M1,K,1,5)
TR2 = CC(1,M1,K,1,2)+CC(1,M1,K,1,5)
TR4 = CC(1,M1,K,1,3)-CC(1,M1,K,1,4)
TR3 = CC(1,M1,K,1,3)+CC(1,M1,K,1,4)
CHOLD1 = SN*(CC(1,M1,K,1,1)+TR2+TR3)
CHOLD2 = SN*(CC(2,M1,K,1,1)+TI2+TI3)
CR2 = CC(1,M1,K,1,1)+TR11*TR2+TR12*TR3
CI2 = CC(2,M1,K,1,1)+TR11*TI2+TR12*TI3
CR3 = CC(1,M1,K,1,1)+TR12*TR2+TR11*TR3
CI3 = CC(2,M1,K,1,1)+TR12*TI2+TR11*TI3
CC(1,M1,K,1,1) = CHOLD1
CC(2,M1,K,1,1) = CHOLD2
CR5 = TI11*TR5+TI12*TR4
CI5 = TI11*TI5+TI12*TI4
CR4 = TI12*TR5-TI11*TR4
CI4 = TI12*TI5-TI11*TI4
CC(1,M1,K,1,2) = SN*(CR2-CI5)
CC(1,M1,K,1,5) = SN*(CR2+CI5)
CC(2,M1,K,1,2) = SN*(CI2+CR5)
CC(2,M1,K,1,3) = SN*(CI3+CR4)
CC(1,M1,K,1,3) = SN*(CR3-CI4)
CC(1,M1,K,1,4) = SN*(CR3+CI4)
CC(2,M1,K,1,4) = SN*(CI3-CR4)
CC(2,M1,K,1,5) = SN*(CI2-CR5)
101 CONTINUE
RETURN
106 DO 107 K=1,L1
M2 = M2S
DO 107 M1=1,M1D,IM1
M2 = M2+IM2
TI5 = CC(2,M1,K,1,2)-CC(2,M1,K,1,5)
TI2 = CC(2,M1,K,1,2)+CC(2,M1,K,1,5)
TI4 = CC(2,M1,K,1,3)-CC(2,M1,K,1,4)
TI3 = CC(2,M1,K,1,3)+CC(2,M1,K,1,4)
TR5 = CC(1,M1,K,1,2)-CC(1,M1,K,1,5)
TR2 = CC(1,M1,K,1,2)+CC(1,M1,K,1,5)
TR4 = CC(1,M1,K,1,3)-CC(1,M1,K,1,4)
TR3 = CC(1,M1,K,1,3)+CC(1,M1,K,1,4)
CH(1,M2,K,1,1) = SN*(CC(1,M1,K,1,1)+TR2+TR3)
CH(2,M2,K,1,1) = SN*(CC(2,M1,K,1,1)+TI2+TI3)
CR2 = CC(1,M1,K,1,1)+TR11*TR2+TR12*TR3
CI2 = CC(2,M1,K,1,1)+TR11*TI2+TR12*TI3
CR3 = CC(1,M1,K,1,1)+TR12*TR2+TR11*TR3
CI3 = CC(2,M1,K,1,1)+TR12*TI2+TR11*TI3
CR5 = TI11*TR5+TI12*TR4
CI5 = TI11*TI5+TI12*TI4
CR4 = TI12*TR5-TI11*TR4
CI4 = TI12*TI5-TI11*TI4
CH(1,M2,K,2,1) = SN*(CR2-CI5)
CH(1,M2,K,5,1) = SN*(CR2+CI5)
CH(2,M2,K,2,1) = SN*(CI2+CR5)
CH(2,M2,K,3,1) = SN*(CI3+CR4)
CH(1,M2,K,3,1) = SN*(CR3-CI4)
CH(1,M2,K,4,1) = SN*(CR3+CI4)
CH(2,M2,K,4,1) = SN*(CI3-CR4)
CH(2,M2,K,5,1) = SN*(CI2-CR5)
107 CONTINUE
RETURN
102 DO 103 K=1,L1
M2 = M2S
DO 103 M1=1,M1D,IM1
M2 = M2+IM2
TI5 = CC(2,M1,K,1,2)-CC(2,M1,K,1,5)
TI2 = CC(2,M1,K,1,2)+CC(2,M1,K,1,5)
TI4 = CC(2,M1,K,1,3)-CC(2,M1,K,1,4)
TI3 = CC(2,M1,K,1,3)+CC(2,M1,K,1,4)
TR5 = CC(1,M1,K,1,2)-CC(1,M1,K,1,5)
TR2 = CC(1,M1,K,1,2)+CC(1,M1,K,1,5)
TR4 = CC(1,M1,K,1,3)-CC(1,M1,K,1,4)
TR3 = CC(1,M1,K,1,3)+CC(1,M1,K,1,4)
CH(1,M2,K,1,1) = CC(1,M1,K,1,1)+TR2+TR3
CH(2,M2,K,1,1) = CC(2,M1,K,1,1)+TI2+TI3
CR2 = CC(1,M1,K,1,1)+TR11*TR2+TR12*TR3
CI2 = CC(2,M1,K,1,1)+TR11*TI2+TR12*TI3
CR3 = CC(1,M1,K,1,1)+TR12*TR2+TR11*TR3
CI3 = CC(2,M1,K,1,1)+TR12*TI2+TR11*TI3
CR5 = TI11*TR5+TI12*TR4
CI5 = TI11*TI5+TI12*TI4
CR4 = TI12*TR5-TI11*TR4
CI4 = TI12*TI5-TI11*TI4
CH(1,M2,K,2,1) = CR2-CI5
CH(1,M2,K,5,1) = CR2+CI5
CH(2,M2,K,2,1) = CI2+CR5
CH(2,M2,K,3,1) = CI3+CR4
CH(1,M2,K,3,1) = CR3-CI4
CH(1,M2,K,4,1) = CR3+CI4
CH(2,M2,K,4,1) = CI3-CR4
CH(2,M2,K,5,1) = CI2-CR5
103 CONTINUE
DO 105 I=2,IDO
DO 104 K=1,L1
M2 = M2S
DO 104 M1=1,M1D,IM1
M2 = M2+IM2
TI5 = CC(2,M1,K,I,2)-CC(2,M1,K,I,5)
TI2 = CC(2,M1,K,I,2)+CC(2,M1,K,I,5)
TI4 = CC(2,M1,K,I,3)-CC(2,M1,K,I,4)
TI3 = CC(2,M1,K,I,3)+CC(2,M1,K,I,4)
TR5 = CC(1,M1,K,I,2)-CC(1,M1,K,I,5)
TR2 = CC(1,M1,K,I,2)+CC(1,M1,K,I,5)
TR4 = CC(1,M1,K,I,3)-CC(1,M1,K,I,4)
TR3 = CC(1,M1,K,I,3)+CC(1,M1,K,I,4)
CH(1,M2,K,1,I) = CC(1,M1,K,I,1)+TR2+TR3
CH(2,M2,K,1,I) = CC(2,M1,K,I,1)+TI2+TI3
CR2 = CC(1,M1,K,I,1)+TR11*TR2+TR12*TR3
CI2 = CC(2,M1,K,I,1)+TR11*TI2+TR12*TI3
CR3 = CC(1,M1,K,I,1)+TR12*TR2+TR11*TR3
CI3 = CC(2,M1,K,I,1)+TR12*TI2+TR11*TI3
CR5 = TI11*TR5+TI12*TR4
CI5 = TI11*TI5+TI12*TI4
CR4 = TI12*TR5-TI11*TR4
CI4 = TI12*TI5-TI11*TI4
DR3 = CR3-CI4
DR4 = CR3+CI4
DI3 = CI3+CR4
DI4 = CI3-CR4
DR5 = CR2+CI5
DR2 = CR2-CI5
DI5 = CI2-CR5
DI2 = CI2+CR5
CH(1,M2,K,2,I) = WA(I,1,1)*DR2+WA(I,1,2)*DI2
CH(2,M2,K,2,I) = WA(I,1,1)*DI2-WA(I,1,2)*DR2
CH(1,M2,K,3,I) = WA(I,2,1)*DR3+WA(I,2,2)*DI3
CH(2,M2,K,3,I) = WA(I,2,1)*DI3-WA(I,2,2)*DR3
CH(1,M2,K,4,I) = WA(I,3,1)*DR4+WA(I,3,2)*DI4
CH(2,M2,K,4,I) = WA(I,3,1)*DI4-WA(I,3,2)*DR4
CH(1,M2,K,5,I) = WA(I,4,1)*DR5+WA(I,4,2)*DI5
CH(2,M2,K,5,I) = WA(I,4,1)*DI5-WA(I,4,2)*DR5
104 CONTINUE
105 END DO
RETURN
END