1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
|
// This file is part of Eigen, a lightweight C++ template library
// for linear algebra.
//
// Copyright (C) 2008-2009 Guillaume Saupin <guillaume.saupin@cea.fr>
//
// This Source Code Form is subject to the terms of the Mozilla
// Public License v. 2.0. If a copy of the MPL was not distributed
// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef EIGEN_SKYLINE_STORAGE_H
#define EIGEN_SKYLINE_STORAGE_H
namespace Eigen {
/** Stores a skyline set of values in three structures :
* The diagonal elements
* The upper elements
* The lower elements
*
*/
template<typename Scalar>
class SkylineStorage {
typedef typename NumTraits<Scalar>::Real RealScalar;
typedef SparseIndex Index;
public:
SkylineStorage()
: m_diag(0),
m_lower(0),
m_upper(0),
m_lowerProfile(0),
m_upperProfile(0),
m_diagSize(0),
m_upperSize(0),
m_lowerSize(0),
m_upperProfileSize(0),
m_lowerProfileSize(0),
m_allocatedSize(0) {
}
SkylineStorage(const SkylineStorage& other)
: m_diag(0),
m_lower(0),
m_upper(0),
m_lowerProfile(0),
m_upperProfile(0),
m_diagSize(0),
m_upperSize(0),
m_lowerSize(0),
m_upperProfileSize(0),
m_lowerProfileSize(0),
m_allocatedSize(0) {
*this = other;
}
SkylineStorage & operator=(const SkylineStorage& other) {
resize(other.diagSize(), other.m_upperProfileSize, other.m_lowerProfileSize, other.upperSize(), other.lowerSize());
memcpy(m_diag, other.m_diag, m_diagSize * sizeof (Scalar));
memcpy(m_upper, other.m_upper, other.upperSize() * sizeof (Scalar));
memcpy(m_lower, other.m_lower, other.lowerSize() * sizeof (Scalar));
memcpy(m_upperProfile, other.m_upperProfile, m_upperProfileSize * sizeof (Index));
memcpy(m_lowerProfile, other.m_lowerProfile, m_lowerProfileSize * sizeof (Index));
return *this;
}
void swap(SkylineStorage& other) {
std::swap(m_diag, other.m_diag);
std::swap(m_upper, other.m_upper);
std::swap(m_lower, other.m_lower);
std::swap(m_upperProfile, other.m_upperProfile);
std::swap(m_lowerProfile, other.m_lowerProfile);
std::swap(m_diagSize, other.m_diagSize);
std::swap(m_upperSize, other.m_upperSize);
std::swap(m_lowerSize, other.m_lowerSize);
std::swap(m_allocatedSize, other.m_allocatedSize);
}
~SkylineStorage() {
delete[] m_diag;
delete[] m_upper;
if (m_upper != m_lower)
delete[] m_lower;
delete[] m_upperProfile;
delete[] m_lowerProfile;
}
void reserve(Index size, Index upperProfileSize, Index lowerProfileSize, Index upperSize, Index lowerSize) {
Index newAllocatedSize = size + upperSize + lowerSize;
if (newAllocatedSize > m_allocatedSize)
reallocate(size, upperProfileSize, lowerProfileSize, upperSize, lowerSize);
}
void squeeze() {
if (m_allocatedSize > m_diagSize + m_upperSize + m_lowerSize)
reallocate(m_diagSize, m_upperProfileSize, m_lowerProfileSize, m_upperSize, m_lowerSize);
}
void resize(Index diagSize, Index upperProfileSize, Index lowerProfileSize, Index upperSize, Index lowerSize, float reserveSizeFactor = 0) {
if (m_allocatedSize < diagSize + upperSize + lowerSize)
reallocate(diagSize, upperProfileSize, lowerProfileSize, upperSize + Index(reserveSizeFactor * upperSize), lowerSize + Index(reserveSizeFactor * lowerSize));
m_diagSize = diagSize;
m_upperSize = upperSize;
m_lowerSize = lowerSize;
m_upperProfileSize = upperProfileSize;
m_lowerProfileSize = lowerProfileSize;
}
inline Index diagSize() const {
return m_diagSize;
}
inline Index upperSize() const {
return m_upperSize;
}
inline Index lowerSize() const {
return m_lowerSize;
}
inline Index upperProfileSize() const {
return m_upperProfileSize;
}
inline Index lowerProfileSize() const {
return m_lowerProfileSize;
}
inline Index allocatedSize() const {
return m_allocatedSize;
}
inline void clear() {
m_diagSize = 0;
}
inline Scalar& diag(Index i) {
return m_diag[i];
}
inline const Scalar& diag(Index i) const {
return m_diag[i];
}
inline Scalar& upper(Index i) {
return m_upper[i];
}
inline const Scalar& upper(Index i) const {
return m_upper[i];
}
inline Scalar& lower(Index i) {
return m_lower[i];
}
inline const Scalar& lower(Index i) const {
return m_lower[i];
}
inline Index& upperProfile(Index i) {
return m_upperProfile[i];
}
inline const Index& upperProfile(Index i) const {
return m_upperProfile[i];
}
inline Index& lowerProfile(Index i) {
return m_lowerProfile[i];
}
inline const Index& lowerProfile(Index i) const {
return m_lowerProfile[i];
}
static SkylineStorage Map(Index* upperProfile, Index* lowerProfile, Scalar* diag, Scalar* upper, Scalar* lower, Index size, Index upperSize, Index lowerSize) {
SkylineStorage res;
res.m_upperProfile = upperProfile;
res.m_lowerProfile = lowerProfile;
res.m_diag = diag;
res.m_upper = upper;
res.m_lower = lower;
res.m_allocatedSize = res.m_diagSize = size;
res.m_upperSize = upperSize;
res.m_lowerSize = lowerSize;
return res;
}
inline void reset() {
memset(m_diag, 0, m_diagSize * sizeof (Scalar));
memset(m_upper, 0, m_upperSize * sizeof (Scalar));
memset(m_lower, 0, m_lowerSize * sizeof (Scalar));
memset(m_upperProfile, 0, m_diagSize * sizeof (Index));
memset(m_lowerProfile, 0, m_diagSize * sizeof (Index));
}
void prune(Scalar reference, RealScalar epsilon = dummy_precision<RealScalar>()) {
//TODO
}
protected:
inline void reallocate(Index diagSize, Index upperProfileSize, Index lowerProfileSize, Index upperSize, Index lowerSize) {
Scalar* diag = new Scalar[diagSize];
Scalar* upper = new Scalar[upperSize];
Scalar* lower = new Scalar[lowerSize];
Index* upperProfile = new Index[upperProfileSize];
Index* lowerProfile = new Index[lowerProfileSize];
Index copyDiagSize = (std::min)(diagSize, m_diagSize);
Index copyUpperSize = (std::min)(upperSize, m_upperSize);
Index copyLowerSize = (std::min)(lowerSize, m_lowerSize);
Index copyUpperProfileSize = (std::min)(upperProfileSize, m_upperProfileSize);
Index copyLowerProfileSize = (std::min)(lowerProfileSize, m_lowerProfileSize);
// copy
memcpy(diag, m_diag, copyDiagSize * sizeof (Scalar));
memcpy(upper, m_upper, copyUpperSize * sizeof (Scalar));
memcpy(lower, m_lower, copyLowerSize * sizeof (Scalar));
memcpy(upperProfile, m_upperProfile, copyUpperProfileSize * sizeof (Index));
memcpy(lowerProfile, m_lowerProfile, copyLowerProfileSize * sizeof (Index));
// delete old stuff
delete[] m_diag;
delete[] m_upper;
delete[] m_lower;
delete[] m_upperProfile;
delete[] m_lowerProfile;
m_diag = diag;
m_upper = upper;
m_lower = lower;
m_upperProfile = upperProfile;
m_lowerProfile = lowerProfile;
m_allocatedSize = diagSize + upperSize + lowerSize;
m_upperSize = upperSize;
m_lowerSize = lowerSize;
}
public:
Scalar* m_diag;
Scalar* m_upper;
Scalar* m_lower;
Index* m_upperProfile;
Index* m_lowerProfile;
Index m_diagSize;
Index m_upperSize;
Index m_lowerSize;
Index m_upperProfileSize;
Index m_lowerProfileSize;
Index m_allocatedSize;
};
} // end namespace Eigen
#endif // EIGEN_COMPRESSED_STORAGE_H
|
