scalar_poisson_regu.C

/*
 * Method of regularization of the source of Poisson equation
 *
 * (see file scalar.h for documentation).
 *
 */

/*
 *   Copyright (c) 2003 Eric Gourgoulhon & Jerome Novak
 *
 *   Copyright (c) 2000-2001 Keisuke Taniguchi (for preceding Cmp version)
 *
 *   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 as published by
 *   the Free Software Foundation; either version 2 of the License, or
 *   (at your option) any later version.
 *
 *   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 scalar_poisson_regu_C[] = "$Header: /cvsroot/Lorene/C++/Source/Tensor/Scalar/scalar_poisson_regu.C,v 1.2 2003/10/11 14:46:00 e_gourgoulhon Exp $" ;

/*
 * $Id: scalar_poisson_regu.C,v 1.2 2003/10/11 14:46:00 e_gourgoulhon Exp $
 * $Log: scalar_poisson_regu.C,v $
 * Revision 1.2  2003/10/11 14:46:00  e_gourgoulhon
 * Line 65-67: changed the name of local variable "triad" to "triad0"
 * in order not to shadow the class member triad.
 *
 * Revision 1.1  2003/09/25 08:56:28  e_gourgoulhon
 * First version (uses Cmp and Tenseur as intermediate quantities).
 *
 *
 * $Header: /cvsroot/Lorene/C++/Source/Tensor/Scalar/scalar_poisson_regu.C,v 1.2 2003/10/11 14:46:00 e_gourgoulhon Exp $
 *
 */

// Header Lorene
#include "tensor.h"
#include "cmp.h"
#include "tenseur.h"
#include "param.h"

//******************************************************************

void Scalar::poisson_regular(int k_div, int nzet, double unsgam1, Param& par,
              Scalar& uu, Scalar& uu_regu, Scalar& uu_div,
              Tensor& duu_div,
              Scalar& source_regu, Scalar& source_div) const {
              
    Cmp csource(*this) ; 
    Cmp cuu(uu) ;
    Cmp cuu_regu(uu_regu) ; 
    Cmp cuu_div(uu_div) ; 
    Cmp csource_regu(source_regu) ; 
    Cmp csource_div(source_div) ; 

    const Base_vect* triad0 = duu_div.get_triad() ; 
    
    Tenseur cduu_div(*mp, 1, COV, *triad0) ; 
    cduu_div.set_etat_qcq() ;
    Itbl ind(1) ;
    ind.set_etat_qcq() ; 
    for (int i=0; i<3; i++) {
        ind.set(0) = i+1 ;
        Cmp tmp( duu_div(ind) ) ;  
        cduu_div.set(i) = tmp ;  
    }
    
    mp->poisson_regular(csource, k_div, nzet, unsgam1, par,
            cuu, cuu_regu, cuu_div, cduu_div,
            csource_regu, csource_div) ;
    
    uu = cuu ; 
    uu_regu = uu ; 

    for (int i=1; i<=3; i++) {
        ind.set(0) = i ;
        duu_div.set(ind) = cduu_div(i-1) ;  
    }
    
    source_regu = csource_regu ; 
    source_div = csource_div ; 

}

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