LORENE
connection_flat.C
1/*
2 * Methods of class Connection_flat.
3 *
4 * (see file connection.h for documentation)
5 *
6 */
7
8/*
9 * Copyright (c) 2003 Eric Gourgoulhon & 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 connection_flat_C[] = "$Header: /cvsroot/Lorene/C++/Source/Connection/connection_flat.C,v 1.6 2014/10/13 08:52:50 j_novak Exp $" ;
29
30/*
31 * $Id: connection_flat.C,v 1.6 2014/10/13 08:52:50 j_novak Exp $
32 * $Log: connection_flat.C,v $
33 * Revision 1.6 2014/10/13 08:52:50 j_novak
34 * Lorene classes and functions now belong to the namespace Lorene.
35 *
36 * Revision 1.5 2014/10/06 15:13:04 j_novak
37 * Modified #include directives to use c++ syntax.
38 *
39 * Revision 1.4 2003/12/30 22:59:35 e_gourgoulhon
40 * Suppressed method fait_ricci() (the computation of the Ricci is
41 * now devoted to the virtual method ricci()).
42 *
43 * Revision 1.3 2003/10/11 14:39:50 e_gourgoulhon
44 * Suppressed declaration of unusued arguments in some methods.
45 *
46 * Revision 1.2 2003/10/01 15:42:49 e_gourgoulhon
47 * still ongoing...
48 *
49 * Revision 1.1 2003/09/29 21:13:08 e_gourgoulhon
50 * First version --- not ready yet.
51 *
52 *
53 *
54 *
55 * $Header: /cvsroot/Lorene/C++/Source/Connection/connection_flat.C,v 1.6 2014/10/13 08:52:50 j_novak Exp $
56 *
57 */
58
59// C++ headers
60#include "headcpp.h"
61
62// C headers
63#include <cstdlib>
64
65// Lorene headers
66#include "connection.h"
67
68
69 //---------------------------//
70 // Constructors //
71 //---------------------------//
72
73
74// Constructor for derived classes
75
76namespace Lorene {
78 : Connection(mpi, bi) {
79
80 assoc_metric = true ;
81
83
84}
85
86// Copy constructor
91
92
93 //------------------------//
94 // Destructor //
95 //------------------------//
96
100
101
102
103 //-----------------------------//
104 // Mutators / assignment //
105 //-----------------------------//
106
108
109 cout << "Connection_flat::operator= : not implemented yet !" << endl ;
110 abort() ;
111
112}
113
114
115
116 //-----------------------------//
117 // Computational methods //
118 //-----------------------------//
119
120
122
123 if (p_ricci == 0x0) { // a new computation is necessary
124
125 p_ricci = new Sym_tensor(*mp, COV, *triad) ;
127 }
128
129 return *p_ricci ;
130
131}
132
133
134
135
136
137
138
139
140}
Vectorial bases (triads) with respect to which the tensorial components are defined.
Definition base_vect.h:105
Class Connection_flat.
Definition connection.h:354
Connection_flat(const Map &, const Base_vect &)
Contructor from a triad, has to be defined in the derived classes.
virtual const Tensor & ricci() const
Computes (if not up to date) and returns the Ricci tensor associated with the current connection.
virtual ~Connection_flat()
destructor
void operator=(const Connection_flat &)
Assignment to another Connection_flat.
Class Connection.
Definition connection.h:113
Tensor * p_ricci
Pointer of the Ricci tensor associated with the connection.
Definition connection.h:164
bool assoc_metric
Indicates whether the connection is associated with a metric (in which case the Ricci tensor is symme...
Definition connection.h:147
const Base_vect *const triad
Triad with respect to which the connection coefficients are defined.
Definition connection.h:124
const Map *const mp
Reference mapping.
Definition connection.h:119
Tensor_sym delta
Tensor which defines the connection with respect to the flat one: is the difference between the con...
Definition connection.h:141
Base class for coordinate mappings.
Definition map.h:670
Class intended to describe valence-2 symmetric tensors.
Definition sym_tensor.h:223
Tensor handling.
Definition tensor.h:288
virtual void set_etat_zero()
Sets the logical state of all components to ETATZERO (zero state).
Definition tensor.C:497
Lorene prototypes.
Definition app_hor.h:64