LORENE
diff_sx2.C
1 /*
2  * Methods for the class Diff_sx2
3  *
4  * (see file diff.h for documentation).
5  *
6  */
7 
8 /*
9  * Copyright (c) 2005 Jerome Novak
10  *
11  * This file is part of LORENE.
12  *
13  * LORENE is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License version 2
15  * as published by the Free Software Foundation.
16  *
17  * LORENE is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with LORENE; if not, write to the Free Software
24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25  *
26  */
27 
28 char diff_sx2_C[] = "$Header: /cvsroot/Lorene/C++/Source/Diff/diff_sx2.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $" ;
29 
30 /*
31  * $Id: diff_sx2.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $
32  * $Log: diff_sx2.C,v $
33  * Revision 1.4 2014/10/13 08:52:51 j_novak
34  * Lorene classes and functions now belong to the namespace Lorene.
35  *
36  * Revision 1.3 2014/10/06 15:13:05 j_novak
37  * Modified #include directives to use c++ syntax.
38  *
39  * Revision 1.2 2007/12/11 15:28:11 jl_cornou
40  * Jacobi(0,2) polynomials partially implemented
41  *
42  * Revision 1.1 2005/01/10 16:34:52 j_novak
43  * New class for 1D mono-domain differential operators.
44  *
45  *
46  * $Header: /cvsroot/Lorene/C++/Source/Diff/diff_sx2.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $
47  *
48  */
49 
50 // C headers
51 #include <cassert>
52 #include <cstdlib>
53 
54 // Lorene headers
55 #include "diff.h"
56 #include "proto.h"
57 
58 namespace Lorene {
59 void sxp12_1d(int, double**, int) ;
60 
61 
62 namespace {
63  int nap = 0 ;
64  Matrice* tab[MAX_BASE*Diff::max_points] ;
65  int nr_done[Diff::max_points] ;
66 }
67 
68 Diff_sx2::Diff_sx2(int base_r, int nr) : Diff(base_r, nr) {
69  initialize() ;
70  assert (base != R_CHEB) ;
71 }
72 
73 Diff_sx2::Diff_sx2(const Diff_sx2& diff_in) : Diff(diff_in) {
74  assert (nap != 0) ;
75  assert (base != R_CHEB) ;
76 }
77 
79 
81  if (nap == 0) {
82  for (int i=0; i<max_points; i++) {
83  nr_done[i] = -1 ;
84  for (int j=0; j<MAX_BASE; j++)
85  tab[j*max_points+i] = 0x0 ;
86  }
87  nap = 1 ;
88  }
89  return ;
90 }
91 
92 void Diff_sx2::operator=(const Diff_sx2& diff_in) {
93  assert (nap != 0) ;
94  Diff::operator=(diff_in) ;
95 
96 }
97 
99 
100  bool done = false ;
101  int indice ;
102  for (indice =0; indice<max_points; indice++) {
103  if (nr_done[indice] == npoints) {
104  if (tab[base*max_points + indice] != 0x0) done = true ;
105  break ;
106  }
107  if (nr_done[indice] == -1)
108  break ;
109  }
110  if (!done) { //The computation must be done ...
111  if (indice == max_points) {
112  cerr << "Diff_sx2::get_matrice() : no space left!!" << '\n'
113  << "The value of Diff.max_points must be increased..." << endl ;
114  abort() ;
115  }
116  nr_done[indice] = npoints ;
117  tab[base*max_points + indice] = new Matrice(npoints, npoints) ;
118  Matrice& resu = *tab[base*max_points + indice] ;
119  resu.set_etat_qcq() ;
120 
121  double* vect = new double[npoints] ;
122  for (int i=0; i<npoints; i++) {
123  for (int j=0; j<npoints; j++)
124  vect[j] = 0. ;
125  vect[i] = 1. ;
126  if (base == R_JACO02) {
127  sxp12_1d(npoints, &vect, base << TRA_R) ;
128  for (int j=0; j<npoints; j++)
129  resu.set(j,i) = vect[j] ;
130  }
131  else {
132  sx2_1d(npoints, &vect, base << TRA_R) ;
133  for (int j=0; j<npoints; j++)
134  resu.set(j,i) = vect[j] ;
135  }
136  }
137  delete [] vect ;
138  }
139 
140  return *tab[base*max_points + indice] ;
141 }
142 
143 ostream& Diff_sx2::operator>>(ostream& ost) const {
144 
145  ost << " Division by x^2 " << endl ;
146  return ost ;
147 
148 }
149 }
Class for the elementary differential operator division by (see the base class Diff ).
Definition: diff.h:369
Diff_sx2(int base_r, int nr)
Standard constructor.
Definition: diff_sx2.C:68
void initialize()
Initializes arrays.
Definition: diff_sx2.C:80
void operator=(const Diff_sx2 &)
Assignment to another Diff_sx2.
Definition: diff_sx2.C:92
virtual const Matrice & get_matrice() const
Returns the matrix associated with the operator.
Definition: diff_sx2.C:98
virtual ostream & operator>>(ostream &) const
Operator >> (virtual function called by the operator <<).
Definition: diff_sx2.C:143
virtual ~Diff_sx2()
Destructor.
Definition: diff_sx2.C:78
Base (abstract) class for 1D spectral differential operators in one domain.
Definition: diff.h:65
int npoints
Number of coefficients.
Definition: diff.h:75
void operator=(const Diff &)
Assignment to another Diff.
Definition: diff.C:75
static const int max_points
Maximal number of matrices stored per base.
Definition: diff.h:71
int base
Base in radial direction.
Definition: diff.h:74
Matrix handling.
Definition: matrice.h:152
void set_etat_qcq()
Sets the logical state to ETATQCQ (ordinary state).
Definition: matrice.C:175
double & set(int j, int i)
Read/write of a particuliar element.
Definition: matrice.h:277
#define MAX_BASE
Nombre max. de bases differentes.
Definition: type_parite.h:144
#define R_JACO02
base de Jacobi(0,2) ordinaire (finjac)
Definition: type_parite.h:188
#define TRA_R
Translation en R, used for a bitwise shift (in hex)
Definition: type_parite.h:158
#define R_CHEB
base de Chebychev ordinaire (fin)
Definition: type_parite.h:166
Lorene prototypes.
Definition: app_hor.h:64