LORENE
ope_helmholtz_minus_pseudo_1d_cl.C
1 /*
2  * Copyright (c) 2004 Philippe Grandclement
3  *
4  * This file is part of LORENE.
5  *
6  * LORENE is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License version 2
8  * as published by the Free Software Foundation.
9  *
10  * LORENE is distributed in the hope that it will be useful,
11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13  * GNU General Public License for more details.
14  *
15  * You should have received a copy of the GNU General Public License
16  * along with LORENE; if not, write to the Free Software
17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
18  *
19  */
20 
21 
22 
23 /*
24  * $Id: ope_helmholtz_minus_pseudo_1d_cl.C,v 1.4 2016/12/05 16:18:12 j_novak Exp $
25  * $Header: /cvsroot/Lorene/C++/Source/Ope_elementary/Ope_helmholtz_minus_pseudo_1d/ope_helmholtz_minus_pseudo_1d_cl.C,v 1.4 2016/12/05 16:18:12 j_novak Exp $
26  *
27  */
28 #include <cmath>
29 #include <cstdlib>
30 
31 #include "proto.h"
32 #include "ope_elementary.h"
33 
34 // Version Matrice --> Matrice
35 namespace Lorene {
36 Matrice _cl_helmholtz_minus_pseudo_1d_pas_prevu (const Matrice & source, int) {
37  cout << "Combinaison lineaire pas prevue..." << endl ;
38  abort() ;
39  exit(-1) ;
40  return source;
41 }
42 
43 
44  //-------------------
45  //-- R_CHEBU -----
46  //-------------------
47 
48 Matrice _cl_helmholtz_minus_pseudo_1d_r_chebu_deux (const Matrice&) ;
49 
50 
51 Matrice _cl_helmholtz_minus_pseudo_1d_r_chebu (const Matrice &source, int puis) {
52  int n = source.get_dim(0) ;
53  assert (n == source.get_dim(1)) ;
54 
55  Matrice res(n, n) ;
56  res.set_etat_qcq() ;
57 
58  switch (puis) {
59  case 2 :
60  res = _cl_helmholtz_minus_pseudo_1d_r_chebu_deux(source) ;
61  break ;
62  default :
63  abort() ;
64  exit(-1) ;
65  }
66 
67  return res ;
68 }
69 
70 
71 //Cas dzpuis == 2
72 Matrice _cl_helmholtz_minus_pseudo_1d_r_chebu_deux (const Matrice &source) {
73 
74  int n = source.get_dim(0) ;
75  assert (n == source.get_dim(1)) ;
76 
77  Matrice barre(source) ;
78  int dirac = 1 ;
79  for (int i=0 ; i<n-2 ; i++) {
80  for (int j=0 ; j<n ; j++)
81  barre.set(i, j) = ((1+dirac)*source(i, j)-source(i+2, j)) ;
82  if (i==0) dirac = 0 ;
83  }
84 
85  Matrice tilde(barre) ;
86  for (int i=0 ; i<n-4 ; i++)
87  for (int j=0 ; j<n ; j++)
88  tilde.set(i, j) = (barre(i, j)-barre(i+2, j)) ;
89 
90  Matrice bis(tilde) ;
91  for (int i=0 ; i<n-4 ; i++)
92  for (int j=0 ; j<n ; j++)
93  bis.set(i, j) = (tilde(i, j)+tilde(i+1, j)) ;
94 
95  Matrice res (bis) ;
96  for (int i=0 ; i<n-4 ; i++)
97  for (int j=0 ; j<n ; j++)
98  res.set(i, j) = (bis(i, j)-bis(i+1, j)) ;
99 
100 
101 
102  return res ;
103 }
104 
106  if (ope_mat == 0x0)
107  do_ope_mat() ;
108 
109  if (ope_cl != 0x0)
110  delete ope_cl ;
111 
112  // Routines de derivation
113  static Matrice (*cl_helmholtz_minus_pseudo_1d[MAX_BASE])(const Matrice&, int);
114  static int nap = 0 ;
115 
116  // Premier appel
117  if (nap==0) {
118  nap = 1 ;
119  for (int i=0 ; i<MAX_BASE ; i++) {
120  cl_helmholtz_minus_pseudo_1d[i] = _cl_helmholtz_minus_pseudo_1d_pas_prevu ;
121  }
122  // Les routines existantes
123  cl_helmholtz_minus_pseudo_1d[R_CHEBU >> TRA_R] = _cl_helmholtz_minus_pseudo_1d_r_chebu ;
124  }
125  ope_cl = new Matrice(cl_helmholtz_minus_pseudo_1d[base_r](*ope_mat, dzpuis)) ;
126 }
127 
128 
129 }
int dzpuis
the associated dzpuis, if in the compactified domain.
virtual void do_ope_cl() const
Computes the banded-matrix of the operator.
Matrice * ope_cl
Pointer on the banded-matrix of the operator.
Lorene prototypes.
Definition: app_hor.h:67
Matrice * ope_mat
Pointer on the matrix representation of the operator.
int base_r
Radial basis of decomposition.
#define TRA_R
Translation en R, used for a bitwise shift (in hex)
Definition: type_parite.h:158
Matrix handling.
Definition: matrice.h:152
int get_dim(int i) const
Returns the dimension of the matrix.
Definition: matrice.C:263
virtual void do_ope_mat() const
Computes the matrix of the operator.
#define R_CHEBU
base de Chebychev ordinaire (fin), dev. en 1/r
Definition: type_parite.h:180
#define MAX_BASE
Nombre max. de bases differentes.
Definition: type_parite.h:144