!CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC ! ! FFTPACK 5.0 ! Copyright (C) 1995-2004, Scientific Computing Division, ! University Corporation for Atmospheric Research ! Licensed under the GNU General Public License (GPL) ! ! Authors: Paul N. Swarztrauber and Richard A. Valent ! ! $Id: r1f5kb.f,v 1.2 2004/06/15 21:29:20 rodney Exp $ ! !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC SUBROUTINE R1F5KB (IDO,L1,CC,IN1,CH,IN2, & & WA1,WA2,WA3,WA4) REAL CC(IN1,IDO,5,L1) ,CH(IN2,IDO,L1,5), & & WA1(IDO) ,WA2(IDO) ,WA3(IDO) ,WA4(IDO) ! 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 CH(1,1,K,1) = CC(1,1,1,K)+2.*CC(1,IDO,2,K)+2.*CC(1,IDO,4,K) CH(1,1,K,2) = (CC(1,1,1,K)+TR11*2.*CC(1,IDO,2,K) & & +TR12*2.*CC(1,IDO,4,K))-(TI11*2.*CC(1,1,3,K) & & +TI12*2.*CC(1,1,5,K)) CH(1,1,K,3) = (CC(1,1,1,K)+TR12*2.*CC(1,IDO,2,K) & & +TR11*2.*CC(1,IDO,4,K))-(TI12*2.*CC(1,1,3,K) & & -TI11*2.*CC(1,1,5,K)) CH(1,1,K,4) = (CC(1,1,1,K)+TR12*2.*CC(1,IDO,2,K) & & +TR11*2.*CC(1,IDO,4,K))+(TI12*2.*CC(1,1,3,K) & & -TI11*2.*CC(1,1,5,K)) CH(1,1,K,5) = (CC(1,1,1,K)+TR11*2.*CC(1,IDO,2,K) & & +TR12*2.*CC(1,IDO,4,K))+(TI11*2.*CC(1,1,3,K) & & +TI12*2.*CC(1,1,5,K)) 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 CH(1,I-1,K,1) = CC(1,I-1,1,K)+(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +(CC(1,I-1,5,K)+CC(1,IC-1,4,K)) CH(1,I,K,1) = CC(1,I,1,K)+(CC(1,I,3,K)-CC(1,IC,2,K)) & & +(CC(1,I,5,K)-CC(1,IC,4,K)) CH(1,I-1,K,2) = WA1(I-2)*((CC(1,I-1,1,K)+TR11* & & (CC(1,I-1,3,K)+CC(1,IC-1,2,K))+TR12 & & *(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI11*(CC(1,I,3,K) & & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K)))) & & -WA1(I-1)*((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) & & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))+(TI11*(CC(1,I-1,3,K) & & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) CH(1,I,K,2) = WA1(I-2)*((CC(1,I,1,K)+TR11*(CC(1,I,3,K) & & -CC(1,IC,2,K))+TR12*(CC(1,I,5,K)-CC(1,IC,4,K))) & & +(TI11*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))+TI12 & & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K))))+WA1(I-1) & & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K) & & +CC(1,IC-1,2,K))+TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K))) & & -(TI11*(CC(1,I,3,K)+CC(1,IC,2,K))+TI12 & & *(CC(1,I,5,K)+CC(1,IC,4,K)))) CH(1,I-1,K,3) = WA2(I-2) & & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI12*(CC(1,I,3,K) & & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) & & -WA2(I-1) & & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- & & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) & & +(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 & & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) CH(1,I,K,3) = WA2(I-2) & & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- & & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) & & +(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 & & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) & & +WA2(I-1) & & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))-(TI12*(CC(1,I,3,K) & & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) CH(1,I-1,K,4) = WA3(I-2) & & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI12*(CC(1,I,3,K) & & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) & & -WA3(I-1) & & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- & & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) & & -(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 & & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) CH(1,I,K,4) = WA3(I-2) & & *((CC(1,I,1,K)+TR12*(CC(1,I,3,K)- & & CC(1,IC,2,K))+TR11*(CC(1,I,5,K)-CC(1,IC,4,K))) & & -(TI12*(CC(1,I-1,3,K)-CC(1,IC-1,2,K))-TI11 & & *(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) & & +WA3(I-1) & & *((CC(1,I-1,1,K)+TR12*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR11*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI12*(CC(1,I,3,K) & & +CC(1,IC,2,K))-TI11*(CC(1,I,5,K)+CC(1,IC,4,K)))) CH(1,I-1,K,5) = WA4(I-2) & & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI11*(CC(1,I,3,K) & & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K)))) & & -WA4(I-1) & & *((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) & & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))-(TI11*(CC(1,I-1,3,K) & & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) CH(1,I,K,5) = WA4(I-2) & & *((CC(1,I,1,K)+TR11*(CC(1,I,3,K)-CC(1,IC,2,K)) & & +TR12*(CC(1,I,5,K)-CC(1,IC,4,K)))-(TI11*(CC(1,I-1,3,K) & & -CC(1,IC-1,2,K))+TI12*(CC(1,I-1,5,K)-CC(1,IC-1,4,K)))) & & +WA4(I-1) & & *((CC(1,I-1,1,K)+TR11*(CC(1,I-1,3,K)+CC(1,IC-1,2,K)) & & +TR12*(CC(1,I-1,5,K)+CC(1,IC-1,4,K)))+(TI11*(CC(1,I,3,K) & & +CC(1,IC,2,K))+TI12*(CC(1,I,5,K)+CC(1,IC,4,K)))) 102 CONTINUE 103 END DO RETURN END