LORENE
xdsdx_1d.C
1/*
2 * Copyright (c) 1999-2001 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 as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 *
11 * LORENE is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
15 *
16 * You should have received a copy of the GNU General Public License
17 * along with LORENE; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19 *
20 */
21
22
23char xdsdx_1d_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $" ;
24
25/*
26 * $Id: xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $
27 * $Log: xdsdx_1d.C,v $
28 * Revision 1.4 2014/10/13 08:53:27 j_novak
29 * Lorene classes and functions now belong to the namespace Lorene.
30 *
31 * Revision 1.3 2014/10/06 15:16:07 j_novak
32 * Modified #include directives to use c++ syntax.
33 *
34 * Revision 1.2 2002/10/16 14:37:11 j_novak
35 * Reorganization of #include instructions of standard C++, in order to
36 * use experimental version 3 of gcc.
37 *
38 * Revision 1.1.1.1 2001/11/20 15:19:29 e_gourgoulhon
39 * LORENE
40 *
41 * Revision 2.0 1999/10/11 09:55:46 phil
42 * *** empty log message ***
43 *
44 *
45 * $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/xdsdx_1d.C,v 1.4 2014/10/13 08:53:27 j_novak Exp $
46 *
47 */
48
49 // Includes
50#include <cstdlib>
51
52#include "headcpp.h"
53#include "type_parite.h"
54
55
56
57 //----------------------------------
58 // Routine pour les cas non prevus --
59 //----------------------------------
60
61namespace Lorene {
62void _xdsdx_1d_pas_prevu(int nr, double* tb, double *xo) {
63 cout << "xdsdx pas prevu..." << endl ;
64 cout << "Nombre de points : " << nr << endl ;
65 cout << "Valeurs : " << tb << " " << xo <<endl ;
66 abort() ;
67 exit(-1) ;
68}
69
70
71 //---------------
72 // cas R_CHEB ---
73 //---------------
74
75void _xdsdx_1d_r_cheb(int nr, double* tb, double *xo) {
76
77 double somme = 0 ;
78 //Premiere boucle sur r :
79 for (int i=nr-1 ; i>= 0 ; i-=2) {
80 if (i==nr-1)
81 somme += i*tb[i] ;
82 else somme += i*tb[i]+(i+2)*tb[i+2] ;
83 xo[i] = somme ;
84 }
85
86 //Seconde boucle sur r :
87 somme = 0 ;
88 for (int i=nr-2 ; i>=0 ; i-=2) {
89 if (i==nr-2)
90 somme += i*tb[i] ;
91 else
92 somme += i*tb[i]+(i+2)*tb[i+2] ;
93 xo[i] = somme ;
94 }
95 xo[0] *= .5 ;
96}
97
98 //-----------------
99 // cas R_CHEBP ---
100 //----------------
101
102void _xdsdx_1d_r_chebp(int nr, double* tb, double *xo) {
103
104 double somme = 0 ;
105 for (int i=nr-1 ; i>=0 ; i--) {
106 if (i==nr-1)
107 somme += (2*i)*tb[i] ;
108 else
109 somme += (2*i)*tb[i]+(2*i+2)*tb[i+1] ;
110 xo[i] = somme ;
111 }
112
113 xo[0] *= .5 ;
114}
115
116 //---------------
117 // cas R_CHEBI --
118 //---------------
119
120void _xdsdx_1d_r_chebi(int nr, double* tb, double *xo) {
121
122 double somme = 0 ;
123 for (int i=nr-1 ; i>=0 ; i--) {
124 if (i==nr-1)
125 somme += (2*i+1)*tb[i] ;
126 else
127 somme += (2*i+1)*tb[i]+(2*i+3)*tb[i+1] ;
128 xo[i] = somme ;
129
130 }
131}
132
133
134 // ---------------------
135 // La routine a appeler
136 //----------------------
137
138
139void xdsdx_1d(int nr, double** tb, int base_r)
140{
141
142 // Routines de derivation
143 static void (*xdsdx_1d[MAX_BASE])(int, double*, double *) ;
144 static int nap = 0 ;
145
146 // Premier appel
147 if (nap==0) {
148 nap = 1 ;
149 for (int i=0 ; i<MAX_BASE ; i++) {
150 xdsdx_1d[i] = _xdsdx_1d_pas_prevu ;
151 }
152 // Les routines existantes
153 xdsdx_1d[R_CHEB >> TRA_R] = _xdsdx_1d_r_cheb ;
154 xdsdx_1d[R_CHEBP >> TRA_R] = _xdsdx_1d_r_chebp ;
155 xdsdx_1d[R_CHEBI >> TRA_R] = _xdsdx_1d_r_chebi ;
156 }
157
158 double *result = new double[nr] ;
159
160 xdsdx_1d[base_r](nr, *tb, result) ;
161
162 delete [] (*tb) ;
163 (*tb) = result ;
164}
165}
#define MAX_BASE
Nombre max. de bases differentes.
#define R_CHEBI
base de Cheb. impaire (rare) seulement
#define TRA_R
Translation en R, used for a bitwise shift (in hex)
#define R_CHEB
base de Chebychev ordinaire (fin)
#define R_CHEBP
base de Cheb. paire (rare) seulement
Lorene prototypes.
Definition app_hor.h:64