LORENE
multxpun_1d.C
1 /*
2  * Copyright (c) 2000-2001 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 
23 char multxpun_1d_C[] = "$Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $" ;
24 
25 /*
26  * $Id: multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $
27  * $Log: multxpun_1d.C,v $
28  * Revision 1.3 2014/10/13 08:53:24 j_novak
29  * Lorene classes and functions now belong to the namespace Lorene.
30  *
31  * Revision 1.2 2014/10/06 15:16:06 j_novak
32  * Modified #include directives to use c++ syntax.
33  *
34  * Revision 1.1 2007/12/11 15:42:22 jl_cornou
35  * Premiere version des fonctions liees aux polynomes de Jacobi(0,2)
36  *
37  * Revision 1.2 2002/10/16 14:37:07 j_novak
38  * Reorganization of #include instructions of standard C++, in order to
39  * use experimental version 3 of gcc.
40  *
41  * Revision 1.1.1.1 2001/11/20 15:19:29 e_gourgoulhon
42  * LORENE
43  *
44  * Revision 2.0 2000/04/03 17:01:59 phil
45  * *** empty log message ***
46  *
47  *
48  * $Header: /cvsroot/Lorene/C++/Source/Non_class_members/Operators/multxpun_1d.C,v 1.3 2014/10/13 08:53:24 j_novak Exp $
49  *
50  */
51 
52 
53 #include <cstdlib>
54 #include <cmath>
55 
56 #include "tbl.h"
57 #include "type_parite.h"
58 
59 /*
60  * Operateur :
61  * -R_JACO02 : (f-f(-1))*(x+1)
62  *
63  *
64  * Entree : coefficients de f dans tb
65  * nr : nombre de points en r
66  *
67  * Sortie : coefficient du resultat dans xo
68  *
69  *
70  */
71 
72 
73  //-----------------------------------
74  // Routine pour les cas non prevus --
75  //-----------------------------------
76 
77 namespace Lorene {
78 void _multxpun_1d_pas_prevu(int nr, double* tb, double *res) {
79  cout << "multxpun pas prevu..." << endl ;
80  cout << " valeurs: " << tb << " " << res << endl ;
81  cout << "nr : " << nr << endl ;
82  abort () ;
83  exit(-1) ;
84 }
85 
86  //---------------
87  // cas R_JACO02 -
88  //---------------
89 
90 void _multxpun_1d_r_jaco02 (int nr, double* tb, double *xo)
91 {
92 
93  xo[nr-1] = 0 ;
94  for (int i = 1 ; i < nr-1 ; i++) {
95  xo[i] = i*(i+2)/double((i+1)*(2*i+1))*tb[i-1] + (i*i+3*i+3)/double((i+1)*(i+2))*tb[i] + (i+1)*(i+3)/double((i+2)*(2*i+5))*tb[i+1] ;
96  }
97  xo[0] = 1.5*tb[0] + 0.3*tb[1] ;
98  xo[nr-1] = (nr*nr-1)/double((nr)*(2*nr-1))*tb[nr-2] + (1+1/double((nr)*(nr+1)))*tb[nr-1] ;
99 }
100 
101  //----------------------------
102  // La routine a appeler ----
103  //----------------------------
104 
105 
106 void multxpun_1d(int nr, double **tb, int base_r) // Version appliquee a this
107 {
108 
109 // Routines de derivation
110 static void (*multxpun_1d[MAX_BASE])(int, double *, double *) ;
111 static int nap = 0 ;
112 
113  // Premier appel
114  if (nap==0) {
115  nap = 1 ;
116  for (int i=0 ; i<MAX_BASE ; i++) {
117  multxpun_1d[i] = _multxpun_1d_pas_prevu ;
118  }
119  // Les routines existantes
120  multxpun_1d[R_JACO02 >> TRA_R] = _multxpun_1d_r_jaco02 ;
121  }
122 
123  double *result = new double[nr] ;
124  multxpun_1d[base_r](nr, *tb, result) ;
125 
126  delete [] (*tb) ;
127  (*tb) = result ;
128 }
129 }
Lorene
Lorene prototypes.
Definition: app_hor.h:64
R_JACO02
#define R_JACO02
base de Jacobi(0,2) ordinaire (finjac)
Definition: type_parite.h:188
TRA_R
#define TRA_R
Translation en R, used for a bitwise shift (in hex)
Definition: type_parite.h:158
MAX_BASE
#define MAX_BASE
Nombre max. de bases differentes.
Definition: type_parite.h:144