!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: r1f3kf.f,v 1.2 2004/06/15 21:29:20 rodney Exp $ ! !CCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCCC SUBROUTINE R1F3KF (IDO,L1,CC,IN1,CH,IN2,WA1,WA2) REAL CH(IN2,IDO,3,L1) ,CC(IN1,IDO,L1,3) , & & WA1(IDO) ,WA2(IDO) ! ARG=2.*4.*ATAN(1.0)/3. TAUR=COS(ARG) TAUI=SIN(ARG) DO 101 K=1,L1 CH(1,1,1,K) = CC(1,1,K,1)+(CC(1,1,K,2)+CC(1,1,K,3)) CH(1,1,3,K) = TAUI*(CC(1,1,K,3)-CC(1,1,K,2)) CH(1,IDO,2,K) = CC(1,1,K,1)+TAUR* & & (CC(1,1,K,2)+CC(1,1,K,3)) 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-1,1,K) = CC(1,I-1,K,1)+((WA1(I-2)*CC(1,I-1,K,2)+ & & WA1(I-1)*CC(1,I,K,2))+(WA2(I-2)*CC(1,I-1,K,3)+WA2(I-1)* & & CC(1,I,K,3))) CH(1,I,1,K) = CC(1,I,K,1)+((WA1(I-2)*CC(1,I,K,2)- & & WA1(I-1)*CC(1,I-1,K,2))+(WA2(I-2)*CC(1,I,K,3)-WA2(I-1)* & & CC(1,I-1,K,3))) CH(1,I-1,3,K) = (CC(1,I-1,K,1)+TAUR*((WA1(I-2)* & & CC(1,I-1,K,2)+WA1(I-1)*CC(1,I,K,2))+(WA2(I-2)* & & CC(1,I-1,K,3)+WA2(I-1)*CC(1,I,K,3))))+(TAUI*((WA1(I-2)* & & CC(1,I,K,2)-WA1(I-1)*CC(1,I-1,K,2))-(WA2(I-2)* & & CC(1,I,K,3)-WA2(I-1)*CC(1,I-1,K,3)))) CH(1,IC-1,2,K) = (CC(1,I-1,K,1)+TAUR*((WA1(I-2)* & & CC(1,I-1,K,2)+WA1(I-1)*CC(1,I,K,2))+(WA2(I-2)* & & CC(1,I-1,K,3)+WA2(I-1)*CC(1,I,K,3))))-(TAUI*((WA1(I-2)* & & CC(1,I,K,2)-WA1(I-1)*CC(1,I-1,K,2))-(WA2(I-2)* & & CC(1,I,K,3)-WA2(I-1)*CC(1,I-1,K,3)))) CH(1,I,3,K) = (CC(1,I,K,1)+TAUR*((WA1(I-2)*CC(1,I,K,2)- & & WA1(I-1)*CC(1,I-1,K,2))+(WA2(I-2)*CC(1,I,K,3)-WA2(I-1)* & & CC(1,I-1,K,3))))+(TAUI*((WA2(I-2)*CC(1,I-1,K,3)+WA2(I-1)* & & CC(1,I,K,3))-(WA1(I-2)*CC(1,I-1,K,2)+WA1(I-1)* & & CC(1,I,K,2)))) CH(1,IC,2,K) = (TAUI*((WA2(I-2)*CC(1,I-1,K,3)+WA2(I-1)* & & CC(1,I,K,3))-(WA1(I-2)*CC(1,I-1,K,2)+WA1(I-1)* & & CC(1,I,K,2))))-(CC(1,I,K,1)+TAUR*((WA1(I-2)*CC(1,I,K,2)- & & WA1(I-1)*CC(1,I-1,K,2))+(WA2(I-2)*CC(1,I,K,3)-WA2(I-1)* & & CC(1,I-1,K,3)))) 102 CONTINUE 103 END DO RETURN END