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!Environment Canada - Atmospheric Science and Technology License/Disclaimer,
! version 3; Last Modified: May 7, 2008.
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C
C FFTPACK 5.0
C Copyright (C) 1995-2004, Scientific Computing Division,
C University Corporation for Atmospheric Research
C Licensed under the GNU General Public License (GPL)
C
C Authors: Paul N. Swarztrauber and Richard A. Valent
C
C $Id: tables_8.ftn,v 1.2 2010/08/20 16:40:01 armaanl Exp $
C
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SUBROUTINE TABLES_8 (IDO,IP,WA) 1
#include "taglam4d.cdk"
REAL*8 WA(IDO,IP-1,2)
real*8 TPI,ARGZ,ARG1,ARG2,ARG3,ARG4
C
! TPI = 8.*ATAN(1.)
TPI = 8.D0*DATAN(1.D0)
ARGZ = TPI/REAL(IP)
ARG1 = TPI/REAL(IDO*IP)
! print *,'TABLES_8: TPI,ARGZ,ARG1=',TPI,ARGZ,ARG1
DO 110 J=2,IP
ARG2 = REAL(J-1)*ARG1
DO 100 I=1,IDO
ARG3 = REAL(I-1)*ARG2
WA(I,J-1,1) = DCOS(ARG3)
WA(I,J-1,2) = DSIN(ARG3)
! print *,'TABLES_8: I,J,ARG3,WA(I,J-1,1),WA(I,J-1,2)=',
! & I,J,ARG3,WA(I,J-1,1),WA(I,J-1,2)
100 CONTINUE
IF (IP .LE. 5) GO TO 110
ARG4 = REAL(J-1)*ARGZ
WA(1,J-1,1) = DCOS(ARG4)
WA(1,J-1,2) = DSIN(ARG4)
110 CONTINUE
RETURN
END