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/*
* Copyright (c) 1999-2001 Philippe Grandclement
*
* 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 prepa_helmholtz_plus_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/PDE/prepa_helmholtz_plus.C,v 1.5 2014/10/13 08:53:30 j_novak Exp $" ;
/*
* $Id: prepa_helmholtz_plus.C,v 1.5 2014/10/13 08:53:30 j_novak Exp $
* $Log: prepa_helmholtz_plus.C,v $
* Revision 1.5 2014/10/13 08:53:30 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.4 2014/10/06 15:16:10 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.3 2008/02/18 13:53:43 j_novak
* Removal of special indentation instructions.
*
* Revision 1.2 2004/01/15 09:15:37 p_grandclement
* Modification and addition of the Helmholtz operators
*
* Revision 1.1 2003/12/11 14:48:49 p_grandclement
* Addition of ALL (and that is a lot !) the files needed for the general elliptic solver ... UNDER DEVELOPEMENT...
*
*
* $Header: /cvsroot/Lorene/C++/Source/Non_class_members/PDE/prepa_helmholtz_plus.C,v 1.5 2014/10/13 08:53:30 j_novak Exp $
*
*/
//fichiers includes
#include <cstdio>
#include <cstdlib>
#include <cmath>
#include "matrice.h"
#include "type_parite.h"
#include "proto.h"
//------------------------------------
// Routine pour les cas non prevus --
//-----------------------------------
namespace Lorene {
Matrice _prepa_helmholtz_plus_nondege_pas_prevu(const Matrice &so) {
cout << "Unknown case for prepa_helmholtz_plus_nondege" << endl ;
abort() ;
exit(-1) ;
return so;
}
//-------------------
//-- R_CHEB -------
//--------------------
Matrice _prepa_helmholtz_plus_nondege_r_cheb (const Matrice &lap) {
int n = lap.get_dim(0) ;
int non_dege = 2 ;
Matrice res(n-non_dege, n-non_dege) ;
res.set_etat_qcq() ;
for (int i=0 ; i<n-non_dege ; i++)
for (int j=0 ; j<n-non_dege ; j++)
res.set(i, j) = lap(i, j+non_dege) ;
res.set_band (4,4) ;
res.set_lu() ;
return res ;
}
//-------------------
//-- R_CHEBP -------
//--------------------
Matrice _prepa_helmholtz_plus_nondege_r_chebp (const Matrice &lap) {
int n = lap.get_dim(0) ;
int non_dege = 1 ;
Matrice res(n-non_dege, n-non_dege) ;
res.set_etat_qcq() ;
for (int i=0 ; i<n-non_dege ; i++)
for (int j=0 ; j<n-non_dege ; j++)
res.set(i, j) = lap(i, j+non_dege) ;
res.set_band (4,1) ;
res.set_lu() ;
return res ;
}
//-------------------
//-- Fonction ----
//-------------------
Matrice prepa_helmholtz_plus_nondege(const Matrice &ope, int base_r) {
// Routines de derivation
static Matrice (*prepa_helmholtz_plus_nondege[MAX_BASE])
(const Matrice&) ;
static int nap = 0 ;
// Premier appel
if (nap==0) {
nap = 1 ;
for (int i=0 ; i<MAX_BASE ; i++) {
prepa_helmholtz_plus_nondege[i] =
_prepa_helmholtz_plus_nondege_pas_prevu ;
}
// Les routines existantes
prepa_helmholtz_plus_nondege[R_CHEB >> TRA_R] =
_prepa_helmholtz_plus_nondege_r_cheb ;
prepa_helmholtz_plus_nondege[R_CHEBP >> TRA_R] =
_prepa_helmholtz_plus_nondege_r_chebp ;
}
Matrice res(prepa_helmholtz_plus_nondege[base_r](ope)) ;
return res ;
}
}
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