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/*
* Copyright (c) 2003 CHABBERT Jean-Philippe
*
* This file is part of LORENE.
*
* LORENE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* LORENE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LORENE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
char interpol2_C[] = "$Header: /cvsroot/Lorene/Codes/Rot_star/Geodesics/interpol2.C,v 1.2 2014/10/06 15:12:51 j_novak Exp $" ;
/*
* $Id: interpol2.C,v 1.2 2014/10/06 15:12:51 j_novak Exp $
* $Log: interpol2.C,v $
* Revision 1.2 2014/10/06 15:12:51 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.1 2003/02/07 17:31:52 jp_chabbert
* First version with rotstar input data
*
*
*
*
* $Header: /cvsroot/Lorene/Codes/Rot_star/Geodesics/interpol2.C,v 1.2 2014/10/06 15:12:51 j_novak Exp $
*
*/
// C++ headers
// C headers
#include <cmath>
// Lorene headers
#include "etoile.h"
#include "main.h"
point interpol2( double r0, double theta, const Etoile_rot& star )
{
double r=r0/10; // passage en unite Lorene
point p;
double nu=star.get_logn()().val_point(r,theta,0.);
double dzeta=star.get_dzeta()().val_point(r,theta,0.);
double b=star.get_bbb()().val_point(r,theta,0.);
p.omega=star.get_nphi()().val_point(r,theta,0.)/10.;
p.alpha=dzeta-nu;
double beta=log(b);
p.gamma=nu+beta;
p.rho=nu-beta;
double dnudr=star.get_logn()().dsdr().val_point(r,theta,0.);
double dnudt=r*star.get_logn()().srdsdt().val_point(r,theta,0.);
double dbdr=star.get_bbb()().dsdr().val_point(r,theta,0.);
double dbdt=r*star.get_bbb()().srdsdt().val_point(r,theta,0.);
double ddzetadr=star.get_dzeta()().dsdr().val_point(r,theta,0.);
double ddzetadt=r*star.get_dzeta()().srdsdt().val_point(r,theta,0.);
double dbetadr=dbdr/b;
double dbetadt=dbdt/b;
p.drhodr=(dnudr-dbetadr)/10.;
p.drhodtheta=(dnudt-dbetadt);
p.dgammadr=(dnudr+dbetadr)/10.;
p.dgammadtheta=(dnudt+dbetadt);
p.dalphadr=(ddzetadr-dnudr)/10.;
p.dalphadtheta=(ddzetadt-dnudt);
p.domegadr=star.get_nphi()().dsdr().val_point(r,theta,0.)/100.;
p.domegadtheta=r*star.get_nphi()().srdsdt().val_point(r,theta,0.)/10.;
// cout << p.rho << endl;
//cout << p.gamma << endl;
//cout << p.alpha << endl;
//cout << p.omega << endl;
return p;
}
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