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C
C Copyright (c) 1997 Silvano Bonazzola
C
C This file is part of LORENE.
C
C LORENE is free software; you can redistribute it and/or modify
C it under the terms of the GNU General Public License as published by
C the Free Software Foundation; either version 2 of the License, or
C (at your option) any later version.
C
C LORENE is distributed in the hope that it will be useful,
C but WITHOUT ANY WARRANTY; without even the implied warranty of
C MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
C GNU General Public License for more details.
C
C You should have received a copy of the GNU General Public License
C along with LORENE; if not, write to the Free Software
C Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
C
C
SUBROUTINE TF9S(N,Y,CC,CS)
implicit double precision (a-h,o-z)
C
C **** ROUTINE TRANSFORMATION DE FOURIER.
C ***** LES DIMENSIONS MINIMUN POUR LES TABLEAUX SONT N+1 POUR CC ET CS
C**** F DOIT AVOIR COMME DIMENSION N+3
C *** LES ARGUMENS DE LA ROUINE SONT: N NOMBRE DES POINTS D'ECHAN-
C *** TILLONAGE,(=2**m*3**l*5**j),
C *** Y TABLEAU CONTENANT LA FONCTION DONT ON VEUT CALCULER LA T.F.
C *** CC COMPOS.COSINUS,CS COMP.SINUS DE LA TRANSFORMEE DE FOURIER
C
C Routine testee le 10/9/1985
C
C
C $Id: tf9s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $
C $Log: tf9s.f,v $
C Revision 1.2 2012/03/30 12:12:42 j_novak
C Cleaning of fortran files
C
C Revision 1.1.1.1 2001/11/20 15:19:30 e_gourgoulhon
C LORENE
C
c Revision 1.2 1997/05/23 11:38:04 hyc
c *** empty log message ***
c
C Revision 1.1 1997/03/17 20:42:33 hyc
C Initial revision
C
C
C $Header: /cvsroot/Lorene/F77/Source/tf9s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $
C
C
character*120 header
data header/'$Header: /cvsroot/Lorene/F77/Source/tf9s.f,v 1.2 2012/03/30 12:12:42 j_novak Exp $'/
DIMENSION TRIGS(1600),IFAX(40),CC(*),CS(*),Y(*)
DATA NDIM/-1/
save ndim,n2,n1,n21,ifax,trigs
IF(N.LT.1033) GO TO 10
PRINT 110,N
110 FORMAT(10X,'N=',I4,'. N DOIT ETRE < 1033')
CALL EXIT
10 CONTINUE
IF(NDIM.EQ.N) GO TO 20
CALL FAX(IFAX,N,3)
CALL FFTRIG(TRIGS,N,3)
N2=N/2
N1=N+1
N21=N2+1
C
NDIM=N
300 FORMAT(10X,'LA SUB TF EST APPELLEE POUR LA PREMIERE FOIS')
C
C
C
20 CONTINUE
DO 30 L=1,N1
Y(L)=Y(L)+Y(L)
30 CONTINUE
CALL FFT991(Y,CC,TRIGS,IFAX,1,1,N,1,-1)
DO 31 L=1,N21
CC(L)=Y(L+L-1)
CS(L)=-Y(L+L)
31 CONTINUE
100 FORMAT(1X,'TF',10D12.4)
RETURN
END
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