/wrfv2_fire/external/fftpack/fftpack5/mradb5.F
FORTRAN Legacy | 125 lines | 99 code | 1 blank | 25 comment | 0 complexity | 32ff30209ba03064ec68800005e2335f MD5 | raw file
Possible License(s): AGPL-1.0
- !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
- !
- ! FFTPACK 5.0
- !
- ! Authors: Paul N. Swarztrauber and Richard A. Valent
- !
- ! $Id: mradb5.f,v 1.2 2004/06/15 21:29:20 rodney Exp $
- !
- !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC
-
- SUBROUTINE MRADB5 (M,IDO,L1,CC,IM1,IN1,CH,IM2,IN2, &
- & WA1,WA2,WA3,WA4)
- REAL CC(IN1,IDO,5,L1) ,CH(IN2,IDO,L1,5), &
- & WA1(IDO) ,WA2(IDO) ,WA3(IDO) ,WA4(IDO)
- !
- M1D = (M-1)*IM1+1
- M2S = 1-IM2
- ARG=2.*4.*ATAN(1.0)/5.
- TR11=COS(ARG)
- TI11=SIN(ARG)
- TR12=COS(2.*ARG)
- TI12=SIN(2.*ARG)
- DO 101 K=1,L1
- M2 = M2S
- DO 1001 M1=1,M1D,IM1
- M2 = M2+IM2
- CH(M2,1,K,1) = CC(M1,1,1,K)+2.*CC(M1,IDO,2,K)+2.*CC(M1,IDO,4,K)
- CH(M2,1,K,2) = (CC(M1,1,1,K)+TR11*2.*CC(M1,IDO,2,K) &
- & +TR12*2.*CC(M1,IDO,4,K))-(TI11*2.*CC(M1,1,3,K) &
- & +TI12*2.*CC(M1,1,5,K))
- CH(M2,1,K,3) = (CC(M1,1,1,K)+TR12*2.*CC(M1,IDO,2,K) &
- & +TR11*2.*CC(M1,IDO,4,K))-(TI12*2.*CC(M1,1,3,K) &
- & -TI11*2.*CC(M1,1,5,K))
- CH(M2,1,K,4) = (CC(M1,1,1,K)+TR12*2.*CC(M1,IDO,2,K) &
- & +TR11*2.*CC(M1,IDO,4,K))+(TI12*2.*CC(M1,1,3,K) &
- & -TI11*2.*CC(M1,1,5,K))
- CH(M2,1,K,5) = (CC(M1,1,1,K)+TR11*2.*CC(M1,IDO,2,K) &
- & +TR12*2.*CC(M1,IDO,4,K))+(TI11*2.*CC(M1,1,3,K) &
- & +TI12*2.*CC(M1,1,5,K))
- 1001 CONTINUE
- 101 END DO
- IF (IDO .EQ. 1) RETURN
- IDP2 = IDO+2
- DO 103 K=1,L1
- DO 102 I=3,IDO,2
- IC = IDP2-I
- M2 = M2S
- DO 1002 M1=1,M1D,IM1
- M2 = M2+IM2
- CH(M2,I-1,K,1) = CC(M1,I-1,1,K)+(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K))&
- & +(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K))
- CH(M2,I,K,1) = CC(M1,I,1,K)+(CC(M1,I,3,K)-CC(M1,IC,2,K)) &
- & +(CC(M1,I,5,K)-CC(M1,IC,4,K))
- CH(M2,I-1,K,2) = WA1(I-2)*((CC(M1,I-1,1,K)+TR11* &
- & (CC(M1,I-1,3,K)+CC(M1,IC-1,2,K))+TR12 &
- & *(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))-(TI11*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))+TI12*(CC(M1,I,5,K)+CC(M1,IC,4,K)))) &
- & -WA1(I-1)*((CC(M1,I,1,K)+TR11*(CC(M1,I,3,K)-CC(M1,IC,2,K)) &
- & +TR12*(CC(M1,I,5,K)-CC(M1,IC,4,K)))+(TI11*(CC(M1,I-1,3,K) &
- & -CC(M1,IC-1,2,K))+TI12*(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K))))
- CH(M2,I,K,2) = WA1(I-2)*((CC(M1,I,1,K)+TR11*(CC(M1,I,3,K) &
- & -CC(M1,IC,2,K))+TR12*(CC(M1,I,5,K)-CC(M1,IC,4,K))) &
- & +(TI11*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K))+TI12 &
- & *(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K))))+WA1(I-1) &
- & *((CC(M1,I-1,1,K)+TR11*(CC(M1,I-1,3,K) &
- & +CC(M1,IC-1,2,K))+TR12*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K))) &
- & -(TI11*(CC(M1,I,3,K)+CC(M1,IC,2,K))+TI12 &
- & *(CC(M1,I,5,K)+CC(M1,IC,4,K))))
- CH(M2,I-1,K,3) = WA2(I-2) &
- & *((CC(M1,I-1,1,K)+TR12*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR11*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))-(TI12*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))-TI11*(CC(M1,I,5,K)+CC(M1,IC,4,K)))) &
- & -WA2(I-1) &
- & *((CC(M1,I,1,K)+TR12*(CC(M1,I,3,K)- &
- & CC(M1,IC,2,K))+TR11*(CC(M1,I,5,K)-CC(M1,IC,4,K))) &
- & +(TI12*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K))-TI11 &
- & *(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K))))
- CH(M2,I,K,3) = WA2(I-2) &
- & *((CC(M1,I,1,K)+TR12*(CC(M1,I,3,K)- &
- & CC(M1,IC,2,K))+TR11*(CC(M1,I,5,K)-CC(M1,IC,4,K))) &
- & +(TI12*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K))-TI11 &
- & *(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K)))) &
- & +WA2(I-1) &
- & *((CC(M1,I-1,1,K)+TR12*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR11*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))-(TI12*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))-TI11*(CC(M1,I,5,K)+CC(M1,IC,4,K))))
- CH(M2,I-1,K,4) = WA3(I-2) &
- & *((CC(M1,I-1,1,K)+TR12*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR11*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))+(TI12*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))-TI11*(CC(M1,I,5,K)+CC(M1,IC,4,K)))) &
- & -WA3(I-1) &
- & *((CC(M1,I,1,K)+TR12*(CC(M1,I,3,K)- &
- & CC(M1,IC,2,K))+TR11*(CC(M1,I,5,K)-CC(M1,IC,4,K))) &
- & -(TI12*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K))-TI11 &
- & *(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K))))
- CH(M2,I,K,4) = WA3(I-2) &
- & *((CC(M1,I,1,K)+TR12*(CC(M1,I,3,K)- &
- & CC(M1,IC,2,K))+TR11*(CC(M1,I,5,K)-CC(M1,IC,4,K))) &
- & -(TI12*(CC(M1,I-1,3,K)-CC(M1,IC-1,2,K))-TI11 &
- & *(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K)))) &
- & +WA3(I-1) &
- & *((CC(M1,I-1,1,K)+TR12*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR11*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))+(TI12*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))-TI11*(CC(M1,I,5,K)+CC(M1,IC,4,K))))
- CH(M2,I-1,K,5) = WA4(I-2) &
- & *((CC(M1,I-1,1,K)+TR11*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR12*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))+(TI11*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))+TI12*(CC(M1,I,5,K)+CC(M1,IC,4,K)))) &
- & -WA4(I-1) &
- & *((CC(M1,I,1,K)+TR11*(CC(M1,I,3,K)-CC(M1,IC,2,K)) &
- & +TR12*(CC(M1,I,5,K)-CC(M1,IC,4,K)))-(TI11*(CC(M1,I-1,3,K) &
- & -CC(M1,IC-1,2,K))+TI12*(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K))))
- CH(M2,I,K,5) = WA4(I-2) &
- & *((CC(M1,I,1,K)+TR11*(CC(M1,I,3,K)-CC(M1,IC,2,K)) &
- & +TR12*(CC(M1,I,5,K)-CC(M1,IC,4,K)))-(TI11*(CC(M1,I-1,3,K) &
- & -CC(M1,IC-1,2,K))+TI12*(CC(M1,I-1,5,K)-CC(M1,IC-1,4,K)))) &
- & +WA4(I-1) &
- & *((CC(M1,I-1,1,K)+TR11*(CC(M1,I-1,3,K)+CC(M1,IC-1,2,K)) &
- & +TR12*(CC(M1,I-1,5,K)+CC(M1,IC-1,4,K)))+(TI11*(CC(M1,I,3,K) &
- & +CC(M1,IC,2,K))+TI12*(CC(M1,I,5,K)+CC(M1,IC,4,K))))
- 1002 CONTINUE
- 102 CONTINUE
- 103 END DO
- RETURN
- END