LORENE
diff_x2dsdx.C
1/*
2 * Methods for the class Diff_x2dsdx
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
28char diff_x2dsdx_C[] = "$Header: /cvsroot/Lorene/C++/Source/Diff/diff_x2dsdx.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $" ;
29
30/*
31 * $Id: diff_x2dsdx.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $
32 * $Log: diff_x2dsdx.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 2005/01/11 15:16:10 j_novak
43 * More Diff operators.
44 *
45 * Revision 1.1 2005/01/10 16:34:52 j_novak
46 * New class for 1D mono-domain differential operators.
47 *
48 *
49 * $Header: /cvsroot/Lorene/C++/Source/Diff/diff_x2dsdx.C,v 1.4 2014/10/13 08:52:51 j_novak Exp $
50 *
51 */
52
53// C headers
54#include <cassert>
55#include <cstdlib>
56
57// Lorene headers
58#include "diff.h"
59#include "proto.h"
60
61namespace Lorene {
62void mult2_xp1_1d(int, double**, int) ;
63
64namespace {
65 int nap = 0 ;
66 Matrice* tab[MAX_BASE*Diff::max_points] ;
67 int nr_done[Diff::max_points] ;
68}
69
70Diff_x2dsdx::Diff_x2dsdx(int base_r, int nr) : Diff(base_r, nr) {
71 initialize() ;
72 assert ((base != R_CHEBP)&&(base != R_CHEBI)) ;
73}
74
75Diff_x2dsdx::Diff_x2dsdx(const Diff_x2dsdx& diff_in) : Diff(diff_in) {
76 assert (nap != 0) ;
77 assert ((base != R_CHEBP)&&(base != R_CHEBI)) ;
78}
79
81
83 if (nap == 0) {
84 for (int i=0; i<max_points; i++) {
85 nr_done[i] = -1 ;
86 for (int j=0; j<MAX_BASE; j++)
87 tab[j*max_points+i] = 0x0 ;
88 }
89 nap = 1 ;
90 }
91 return ;
92}
93
94void Diff_x2dsdx::operator=(const Diff_x2dsdx& diff_in) {
95 assert (nap != 0) ;
96 Diff::operator=(diff_in) ;
97
98}
99
101
102 bool done = false ;
103 int indice ;
104 for (indice =0; indice<max_points; indice++) {
105 if (nr_done[indice] == npoints) {
106 if (tab[base*max_points + indice] != 0x0) done = true ;
107 break ;
108 }
109 if (nr_done[indice] == -1)
110 break ;
111 }
112 if (!done) { //The computation must be done ...
113 if (indice == max_points) {
114 cerr << "Diff_x2dsdx::get_matrice() : no space left!!" << '\n'
115 << "The value of Diff.max_points must be increased..." << endl ;
116 abort() ;
117 }
118 nr_done[indice] = npoints ;
119 tab[base*max_points + indice] = new Matrice(npoints, npoints) ;
120 Matrice& resu = *tab[base*max_points + indice] ;
121 resu.set_etat_qcq() ;
122
123 double* vect = new double[npoints] ;
124 double* cres = new double[npoints] ;
125 for (int i=0; i<npoints; i++) {
126 for (int j=0; j<npoints; j++)
127 vect[j] = 0. ;
128 vect[i] = 1. ;
129 dsdx_1d(npoints, &vect, base << TRA_R) ;
130 if (base == R_CHEBU) {
131 mult2_xm1_1d_cheb(npoints, vect, cres) ;
132 for (int j=0; j<npoints; j++)
133 resu.set(j,i) = cres[j] ;
134 }
135 else if (base == R_JACO02) {
136 mult2_xp1_1d(npoints, &vect, base << TRA_R) ;
137 for (int j=0; j<npoints; j++)
138 resu.set(j,i) = vect[j];
139 }
140 else {
141 multx2_1d(npoints, &vect, base << TRA_R) ;
142 for (int j=0; j<npoints; j++)
143 resu.set(j,i) = vect[j] ;
144 }
145 }
146 delete [] vect ;
147 delete [] cres ;
148 }
149 return *tab[base*max_points + indice] ;
150}
151
152ostream& Diff_x2dsdx::operator>>(ostream& ost) const {
153
154 ost << " x^2 d / dx " << endl ;
155
156 return ost ;
157
158}
159}
Class for the elementary differential operator (see the base class Diff ).
Definition diff.h:571
virtual const Matrice & get_matrice() const
Returns the matrix associated with the operator.
Diff_x2dsdx(int base_r, int nr)
Standard constructor.
Definition diff_x2dsdx.C:70
void operator=(const Diff_x2dsdx &)
Assignment to another Diff_x2dsdx.
Definition diff_x2dsdx.C:94
virtual ostream & operator>>(ostream &) const
Operator >> (virtual function called by the operator <<).
void initialize()
Initializes arrays.
Definition diff_x2dsdx.C:82
virtual ~Diff_x2dsdx()
Destructor.
Definition diff_x2dsdx.C:80
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.
#define R_CHEBU
base de Chebychev ordinaire (fin), dev. en 1/r
#define R_JACO02
base de Jacobi(0,2) ordinaire (finjac)
#define R_CHEBI
base de Cheb. impaire (rare) seulement
#define TRA_R
Translation en R, used for a bitwise shift (in hex)
#define R_CHEBP
base de Cheb. paire (rare) seulement
Lorene prototypes.
Definition app_hor.h:64