1 !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
4 ! Copyright (C) 1995-2004, Scientific Computing Division,
5 ! University Corporation for Atmospheric Research
6 ! Licensed under the GNU General Public License (GPL)
8 ! Authors: Paul N. Swarztrauber and Richard A. Valent
10 ! $Id: r1f4kb.f,v 1.2 2004/06/15 21:29:20 rodney Exp $
12 !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
14 SUBROUTINE R1F4KB (IDO,L1,CC,IN1,CH,IN2,WA1,WA2,WA3)
15 REAL CC(IN1,IDO,4,L1) ,CH(IN2,IDO,L1,4) , &
16 & WA1(IDO) , WA2(IDO) , WA3(IDO)
20 CH(1,1,K,3) = (CC(1,1,1,K)+CC(1,IDO,4,K)) &
21 & -(CC(1,IDO,2,K)+CC(1,IDO,2,K))
22 CH(1,1,K,1) = (CC(1,1,1,K)+CC(1,IDO,4,K)) &
23 & +(CC(1,IDO,2,K)+CC(1,IDO,2,K))
24 CH(1,1,K,4) = (CC(1,1,1,K)-CC(1,IDO,4,K)) &
25 & +(CC(1,1,3,K)+CC(1,1,3,K))
26 CH(1,1,K,2) = (CC(1,1,1,K)-CC(1,IDO,4,K)) &
27 & -(CC(1,1,3,K)+CC(1,1,3,K))
29 IF (IDO-2) 107,105,102
34 CH(1,I-1,K,1) = (CC(1,I-1,1,K)+CC(1,IC-1,4,K)) &
35 & +(CC(1,I-1,3,K)+CC(1,IC-1,2,K))
36 CH(1,I,K,1) = (CC(1,I,1,K)-CC(1,IC,4,K)) &
37 & +(CC(1,I,3,K)-CC(1,IC,2,K))
38 CH(1,I-1,K,2)=WA1(I-2)*((CC(1,I-1,1,K)-CC(1,IC-1,4,K)) &
39 & -(CC(1,I,3,K)+CC(1,IC,2,K)))-WA1(I-1) &
40 & *((CC(1,I,1,K)+CC(1,IC,4,K))+(CC(1,I-1,3,K)-CC(1,IC-1,2,K)))
41 CH(1,I,K,2)=WA1(I-2)*((CC(1,I,1,K)+CC(1,IC,4,K)) &
42 & +(CC(1,I-1,3,K)-CC(1,IC-1,2,K)))+WA1(I-1) &
43 & *((CC(1,I-1,1,K)-CC(1,IC-1,4,K))-(CC(1,I,3,K)+CC(1,IC,2,K)))
44 CH(1,I-1,K,3)=WA2(I-2)*((CC(1,I-1,1,K)+CC(1,IC-1,4,K)) &
45 & -(CC(1,I-1,3,K)+CC(1,IC-1,2,K)))-WA2(I-1) &
46 & *((CC(1,I,1,K)-CC(1,IC,4,K))-(CC(1,I,3,K)-CC(1,IC,2,K)))
47 CH(1,I,K,3)=WA2(I-2)*((CC(1,I,1,K)-CC(1,IC,4,K)) &
48 & -(CC(1,I,3,K)-CC(1,IC,2,K)))+WA2(I-1) &
49 & *((CC(1,I-1,1,K)+CC(1,IC-1,4,K))-(CC(1,I-1,3,K) &
51 CH(1,I-1,K,4)=WA3(I-2)*((CC(1,I-1,1,K)-CC(1,IC-1,4,K)) &
52 & +(CC(1,I,3,K)+CC(1,IC,2,K)))-WA3(I-1) &
53 & *((CC(1,I,1,K)+CC(1,IC,4,K))-(CC(1,I-1,3,K)-CC(1,IC-1,2,K)))
54 CH(1,I,K,4)=WA3(I-2)*((CC(1,I,1,K)+CC(1,IC,4,K)) &
55 & -(CC(1,I-1,3,K)-CC(1,IC-1,2,K)))+WA3(I-1) &
56 & *((CC(1,I-1,1,K)-CC(1,IC-1,4,K))+(CC(1,I,3,K)+CC(1,IC,2,K)))
59 IF (MOD(IDO,2) .EQ. 1) RETURN
62 CH(1,IDO,K,1) = (CC(1,IDO,1,K)+CC(1,IDO,3,K)) &
63 & +(CC(1,IDO,1,K)+CC(1,IDO,3,K))
64 CH(1,IDO,K,2) = SQRT2*((CC(1,IDO,1,K)-CC(1,IDO,3,K)) &
65 & -(CC(1,1,2,K)+CC(1,1,4,K)))
66 CH(1,IDO,K,3) = (CC(1,1,4,K)-CC(1,1,2,K)) &
67 & +(CC(1,1,4,K)-CC(1,1,2,K))
68 CH(1,IDO,K,4) = -SQRT2*((CC(1,IDO,1,K)-CC(1,IDO,3,K)) &
69 & +(CC(1,1,2,K)+CC(1,1,4,K)))