LORENE
ope_sec_order_r2_cl.C
1 /*
2  * Copyright (c) 2003 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_sec_order_r2_cl.C,v 1.4 2016/12/05 16:18:13 j_novak Exp $
25  * $Header: /cvsroot/Lorene/C++/Source/Ope_elementary/Ope_sec_order_r2/ope_sec_order_r2_cl.C,v 1.4 2016/12/05 16:18:13 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 
36  //-------------------
37  //-- Pas prevu ----
38  //-------------------
39 
40 namespace Lorene {
41 Matrice _cl_sec_order_r2_pas_prevu (const Matrice& so) {
42  cout << "CL Sec_order_r2 not implemented" << endl ;
43  abort() ;
44  exit(-1) ;
45  return so;
46 }
47 
48  //-------------------
49  //-- R_CHEB ------
50  //-------------------
51 
52 Matrice _cl_sec_order_r2_r_cheb (const Matrice& source) {
53 
54  int n = source.get_dim(0) ;
55  assert (n==source.get_dim(1)) ;
56 
57  Matrice barre(source) ;
58  int dirac = 1 ;
59  for (int i=0 ; i<n-2 ; i++) {
60  for (int j=0 ; j<n ; j++)
61  barre.set(i, j) = ((1+dirac)*source(i, j)-source(i+2, j))
62  /(i+1) ;
63  if (i==0) dirac = 0 ;
64  }
65 
66  Matrice res(barre) ;
67  for (int i=0 ; i<n-4 ; i++)
68  for (int j=0 ; j<n ; j++)
69  res.set(i, j) = barre(i, j)-barre(i+2, j) ;
70 
71  return res ;
72 }
73 
74 
76  if (ope_mat == 0x0)
77  do_ope_mat() ;
78 
79  if (ope_cl != 0x0)
80  delete ope_cl ;
81 
82  // Routines de derivation
83  static Matrice (*cl_sec_order_r2[MAX_BASE])(const Matrice&);
84  static int nap = 0 ;
85 
86  // Premier appel
87  if (nap==0) {
88  nap = 1 ;
89  for (int i=0 ; i<MAX_BASE ; i++) {
90  cl_sec_order_r2[i] = _cl_sec_order_r2_pas_prevu ;
91  }
92  // Les routines existantes
93  cl_sec_order_r2[R_CHEB >> TRA_R] = _cl_sec_order_r2_r_cheb ;
94  }
95  ope_cl = new Matrice(cl_sec_order_r2[base_r](*ope_mat)) ;
96 }
97 
98 
99 }
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.
virtual void do_ope_mat() const
Computes the matrix 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
#define MAX_BASE
Nombre max. de bases differentes.
Definition: type_parite.h:144
#define R_CHEB
base de Chebychev ordinaire (fin)
Definition: type_parite.h:166