solp_helmholtz_plus.C
/*
* 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 solp_helmholtz_plus_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/PDE/solp_helmholtz_plus.C,v 1.5 2014/10/13 08:53:31 j_novak Exp $" ;
/*
* $Id: solp_helmholtz_plus.C,v 1.5 2014/10/13 08:53:31 j_novak Exp $
* $Log: solp_helmholtz_plus.C,v $
* Revision 1.5 2014/10/13 08:53:31 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 13:53:45 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/solp_helmholtz_plus.C,v 1.5 2014/10/13 08:53:31 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 {
Tbl _solp_helmholtz_plus_pas_prevu (const Matrice &, const Matrice &,
const Tbl &, double, double) {
cout << " Solution homogene pas prevue ..... : "<< endl ;
abort() ;
exit(-1) ;
Tbl res(1) ;
return res;
}
//-------------------
//-- R_CHEB -----
//-------------------
Tbl _solp_helmholtz_plus_r_cheb (const Matrice &lap, const Matrice &nondege,
const Tbl &source, double alpha, double beta) {
int n = lap.get_dim(0) ;
int dege = n-nondege.get_dim(0) ;
assert (dege ==2) ;
Tbl source_aux(source*alpha*alpha) ;
Tbl xso(source_aux) ;
Tbl xxso(source_aux) ;
multx_1d(n, &xso.t, R_CHEB) ;
multx_1d(n, &xxso.t, R_CHEB) ;
multx_1d(n, &xxso.t, R_CHEB) ;
source_aux = beta*beta/alpha/alpha*source_aux+2*beta/alpha*xso+xxso ;
source_aux = cl_helmholtz_plus (source_aux, R_CHEB) ;
Tbl so(n-dege) ;
so.set_etat_qcq() ;
for (int i=0 ; i<n-dege ; i++)
so.set(i) = source_aux(i) ;
Tbl auxi(nondege.inverse(so)) ;
Tbl res(n) ;
res.set_etat_qcq() ;
for (int i=dege ; i<n ; i++)
res.set(i) = auxi(i-dege) ;
for (int i=0 ; i<dege ; i++)
res.set(i) = 0 ;
return res ;
}
//-------------------
//-- R_CHEBP ----
//-------------------
Tbl _solp_helmholtz_plus_r_chebp (const Matrice &lap, const Matrice &nondege,
const Tbl &source, double alpha, double) {
int n = lap.get_dim(0) ;
int dege = n-nondege.get_dim(0) ;
assert (dege ==1) ;
Tbl source_aux(source*alpha*alpha) ;
source_aux = cl_helmholtz_plus (source_aux, R_CHEBP) ;
Tbl so(n-dege) ;
so.set_etat_qcq() ;
for (int i=0 ; i<n-dege ; i++)
so.set(i) = source_aux(i) ;
Tbl auxi(nondege.inverse(so)) ;
Tbl res(n) ;
res.set_etat_qcq() ;
for (int i=dege ; i<n ; i++)
res.set(i) = auxi(i-dege) ;
for (int i=0 ; i<dege ; i++)
res.set(i) = 0 ;
return res ;
}
//-------------------
//-- Fonction ----
//-------------------
Tbl solp_helmholtz_plus (const Matrice &lap, const Matrice &nondege,
const Tbl &source, double alpha, double beta,
int base_r) {
// Routines de derivation
static Tbl (*solp_helmholtz_plus[MAX_BASE]) (const Matrice&, const Matrice&,
const Tbl&, double, double) ;
static int nap = 0 ;
// Premier appel
if (nap==0) {
nap = 1 ;
for (int i=0 ; i<MAX_BASE ; i++) {
solp_helmholtz_plus[i] = _solp_helmholtz_plus_pas_prevu ;
}
// Les routines existantes
solp_helmholtz_plus[R_CHEB >> TRA_R] = _solp_helmholtz_plus_r_cheb ;
solp_helmholtz_plus[R_CHEBP >> TRA_R] = _solp_helmholtz_plus_r_chebp ;
}
Tbl res(solp_helmholtz_plus[base_r] (lap, nondege, source, alpha, beta)) ;
return res ;
}
}
Lorene::Matrice
Matrix handling.
Definition matrice.h:152
Lorene::Tbl
Basic array class.
Definition tbl.h:161
Lorene::Tbl::get_dim
int get_dim(int i) const
Gives the i-th dimension (ie dim.dim[i]).
Definition tbl.h:403
MAX_BASE
#define MAX_BASE
Nombre max. de bases differentes.
Definition type_parite.h:144
TRA_R
#define TRA_R
Translation en R, used for a bitwise shift (in hex).
Definition type_parite.h:158
R_CHEB
#define R_CHEB
base de Chebychev ordinaire (fin)
Definition type_parite.h:166
R_CHEBP
#define R_CHEBP
base de Cheb. paire (rare) seulement
Definition type_parite.h:168
Lorene
Lorene prototypes.
Definition app_hor.h:64