| 1 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
|---|
| 2 | ! |
|---|
| 3 | ! FFTPACK 5.0 |
|---|
| 4 | ! Copyright (C) 1995-2004, Scientific Computing Division, |
|---|
| 5 | ! University Corporation for Atmospheric Research |
|---|
| 6 | ! Licensed under the GNU General Public License (GPL) |
|---|
| 7 | ! |
|---|
| 8 | ! Authors: Paul N. Swarztrauber and Richard A. Valent |
|---|
| 9 | ! |
|---|
| 10 | ! $Id: mradb3.f,v 1.2 2004/06/15 21:29:19 rodney Exp $ |
|---|
| 11 | ! |
|---|
| 12 | !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC |
|---|
| 13 | |
|---|
| 14 | SUBROUTINE MRADB3 (M,IDO,L1,CC,IM1,IN1,CH,IM2,IN2,WA1,WA2) |
|---|
| 15 | REAL CC(IN1,IDO,3,L1) ,CH(IN2,IDO,L1,3), & |
|---|
| 16 | & WA1(IDO) ,WA2(IDO) |
|---|
| 17 | ! |
|---|
| 18 | M1D = (M-1)*IM1+1 |
|---|
| 19 | M2S = 1-IM2 |
|---|
| 20 | ARG=2.*4.*ATAN(1.0)/3. |
|---|
| 21 | TAUR=COS(ARG) |
|---|
| 22 | TAUI=SIN(ARG) |
|---|
| 23 | DO 101 K=1,L1 |
|---|
| 24 | M2 = M2S |
|---|
| 25 | DO 1001 M1=1,M1D,IM1 |
|---|
| 26 | M2 = M2+IM2 |
|---|
| 27 | CH(M2,1,K,1) = CC(M1,1,1,K)+2.*CC(M1,IDO,2,K) |
|---|
| 28 | CH(M2,1,K,2) = CC(M1,1,1,K)+(2.*TAUR)*CC(M1,IDO,2,K) & |
|---|
| 29 | & -(2.*TAUI)*CC(M1,1,3,K) |
|---|
| 30 | CH(M2,1,K,3) = CC(M1,1,1,K)+(2.*TAUR)*CC(M1,IDO,2,K) & |
|---|
| 31 | & +2.*TAUI*CC(M1,1,3,K) |
|---|
| 32 | 1001 CONTINUE |
|---|
| 33 | 101 END DO |
|---|
| 34 | IF (IDO .EQ. 1) RETURN |
|---|
| 35 | IDP2 = IDO+2 |
|---|
| 36 | DO 103 K=1,L1 |
|---|
| 37 | DO 102 I=3,IDO,2 |
|---|
| 38 | IC = IDP2-I |
|---|
| 39 | M2 = M2S |
|---|
| 40 | DO 1002 M1=1,M1D,IM1 |
|---|
| 41 | M2 = M2+IM2 |
|---|
| 42 | CH(M2,I-1,K,1) = CC(M1,I-1,1,K)+(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) |
|---|
| 43 | CH(M2,I,K,1) = CC(M1,I,1,K)+(CC(M1,I,3,K)-CC(M1,IC,2,K)) |
|---|
| 44 | CH(M2,I-1,K,2) = WA1(I-2)* & |
|---|
| 45 | & ((CC(M1,I-1,1,K)+TAUR*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)))- & |
|---|
| 46 | & (TAUI*(CC(M1,I,3,K)+CC(M1,IC,2,K)))) & |
|---|
| 47 | & -WA1(I-1)* & |
|---|
| 48 | & ((CC(M1,I,1,K)+TAUR*(CC(M1,I,3,K)-CC(M1,IC,2,K)))+ & |
|---|
| 49 | & (TAUI*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K)))) |
|---|
| 50 | CH(M2,I,K,2) = WA1(I-2)* & |
|---|
| 51 | & ((CC(M1,I,1,K)+TAUR*(CC(M1,I,3,K)-CC(M1,IC,2,K)))+ & |
|---|
| 52 | & (TAUI*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K)))) & |
|---|
| 53 | & +WA1(I-1)* & |
|---|
| 54 | & ((CC(M1,I-1,1,K)+TAUR*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)))- & |
|---|
| 55 | & (TAUI*(CC(M1,I,3,K)+CC(M1,IC,2,K)))) |
|---|
| 56 | CH(M2,I-1,K,3) = WA2(I-2)* & |
|---|
| 57 | & ((CC(M1,I-1,1,K)+TAUR*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)))+ & |
|---|
| 58 | & (TAUI*(CC(M1,I,3,K)+CC(M1,IC,2,K)))) & |
|---|
| 59 | & -WA2(I-1)* & |
|---|
| 60 | & ((CC(M1,I,1,K)+TAUR*(CC(M1,I,3,K)-CC(M1,IC,2,K)))- & |
|---|
| 61 | & (TAUI*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K)))) |
|---|
| 62 | CH(M2,I,K,3) = WA2(I-2)* & |
|---|
| 63 | & ((CC(M1,I,1,K)+TAUR*(CC(M1,I,3,K)-CC(M1,IC,2,K)))- & |
|---|
| 64 | & (TAUI*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K)))) & |
|---|
| 65 | & +WA2(I-1)* & |
|---|
| 66 | & ((CC(M1,I-1,1,K)+TAUR*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)))+ & |
|---|
| 67 | & (TAUI*(CC(M1,I,3,K)+CC(M1,IC,2,K)))) |
|---|
| 68 | 1002 CONTINUE |
|---|
| 69 | 102 CONTINUE |
|---|
| 70 | 103 END DO |
|---|
| 71 | RETURN |
|---|
| 72 | END |
|---|
