1 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
5 C Authors: Paul N. Swarztrauber and Richard A. Valent
9 CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
11 SUBROUTINE R1F4KB
(IDO
,L1
,CC
,IN1
,CH
,IN2
,WA1
,WA2
,WA3
)
12 REAL CC
(IN1
,IDO
,4,L1
) ,CH
(IN2
,IDO
,L1
,4) ,
13 1 WA1
(IDO
) , WA2
(IDO
) , WA3
(IDO
)
17 CH
(1,1,K
,3) = (CC
(1,1,1,K
)+CC
(1,IDO
,4,K
))
18 1 -(CC
(1,IDO
,2,K
)+CC
(1,IDO
,2,K
))
19 CH
(1,1,K
,1) = (CC
(1,1,1,K
)+CC
(1,IDO
,4,K
))
20 1 +(CC
(1,IDO
,2,K
)+CC
(1,IDO
,2,K
))
21 CH
(1,1,K
,4) = (CC
(1,1,1,K
)-CC
(1,IDO
,4,K
))
22 1 +(CC
(1,1,3,K
)+CC
(1,1,3,K
))
23 CH
(1,1,K
,2) = (CC
(1,1,1,K
)-CC
(1,IDO
,4,K
))
24 1 -(CC
(1,1,3,K
)+CC
(1,1,3,K
))
26 IF (IDO
-2) 107,105,102
31 CH
(1,I
-1,K
,1) = (CC
(1,I
-1,1,K
)+CC
(1,IC
-1,4,K
))
32 1 +(CC
(1,I
-1,3,K
)+CC
(1,IC
-1,2,K
))
33 CH
(1,I
,K
,1) = (CC
(1,I
,1,K
)-CC
(1,IC
,4,K
))
34 1 +(CC
(1,I
,3,K
)-CC
(1,IC
,2,K
))
35 CH
(1,I
-1,K
,2)=WA1
(I
-2)*((CC
(1,I
-1,1,K
)-CC
(1,IC
-1,4,K
))
36 1 -(CC
(1,I
,3,K
)+CC
(1,IC
,2,K
)))-WA1
(I
-1)
37 1 *((CC
(1,I
,1,K
)+CC
(1,IC
,4,K
))+(CC
(1,I
-1,3,K
)-CC
(1,IC
-1,2,K
)))
38 CH
(1,I
,K
,2)=WA1
(I
-2)*((CC
(1,I
,1,K
)+CC
(1,IC
,4,K
))
39 1 +(CC
(1,I
-1,3,K
)-CC
(1,IC
-1,2,K
)))+WA1
(I
-1)
40 1 *((CC
(1,I
-1,1,K
)-CC
(1,IC
-1,4,K
))-(CC
(1,I
,3,K
)+CC
(1,IC
,2,K
)))
41 CH
(1,I
-1,K
,3)=WA2
(I
-2)*((CC
(1,I
-1,1,K
)+CC
(1,IC
-1,4,K
))
42 1 -(CC
(1,I
-1,3,K
)+CC
(1,IC
-1,2,K
)))-WA2
(I
-1)
43 1 *((CC
(1,I
,1,K
)-CC
(1,IC
,4,K
))-(CC
(1,I
,3,K
)-CC
(1,IC
,2,K
)))
44 CH
(1,I
,K
,3)=WA2
(I
-2)*((CC
(1,I
,1,K
)-CC
(1,IC
,4,K
))
45 1 -(CC
(1,I
,3,K
)-CC
(1,IC
,2,K
)))+WA2
(I
-1)
46 1 *((CC
(1,I
-1,1,K
)+CC
(1,IC
-1,4,K
))-(CC
(1,I
-1,3,K
)
48 CH
(1,I
-1,K
,4)=WA3
(I
-2)*((CC
(1,I
-1,1,K
)-CC
(1,IC
-1,4,K
))
49 1 +(CC
(1,I
,3,K
)+CC
(1,IC
,2,K
)))-WA3
(I
-1)
50 1 *((CC
(1,I
,1,K
)+CC
(1,IC
,4,K
))-(CC
(1,I
-1,3,K
)-CC
(1,IC
-1,2,K
)))
51 CH
(1,I
,K
,4)=WA3
(I
-2)*((CC
(1,I
,1,K
)+CC
(1,IC
,4,K
))
52 1 -(CC
(1,I
-1,3,K
)-CC
(1,IC
-1,2,K
)))+WA3
(I
-1)
53 1 *((CC
(1,I
-1,1,K
)-CC
(1,IC
-1,4,K
))+(CC
(1,I
,3,K
)+CC
(1,IC
,2,K
)))
56 IF (MOD
(IDO
,2) .EQ
. 1) RETURN
59 CH
(1,IDO
,K
,1) = (CC
(1,IDO
,1,K
)+CC
(1,IDO
,3,K
))
60 1 +(CC
(1,IDO
,1,K
)+CC
(1,IDO
,3,K
))
61 CH
(1,IDO
,K
,2) = SQRT2*
((CC
(1,IDO
,1,K
)-CC
(1,IDO
,3,K
))
62 1 -(CC
(1,1,2,K
)+CC
(1,1,4,K
)))
63 CH
(1,IDO
,K
,3) = (CC
(1,1,4,K
)-CC
(1,1,2,K
))
64 1 +(CC
(1,1,4,K
)-CC
(1,1,2,K
))
65 CH
(1,IDO
,K
,4) = -SQRT2*
((CC
(1,IDO
,1,K
)-CC
(1,IDO
,3,K
))
66 1 +(CC
(1,1,2,K
)+CC
(1,1,4,K
)))