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
|
/*
* Tiny Vector Matrix Library
* Dense Vector Matrix Libary of Tiny size using Expression Templates
*
* Copyright (C) 2001 - 2003 Olaf Petzold <opetzold@users.sourceforge.net>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* lesser General Public License for more details.
*
* You should have received a copy of the GNU lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* $Id: MatrixRow.h,v 1.14 2004/09/16 09:14:18 opetzold Exp $
*/
#include <cassert>
#ifndef TVMET_XPR_MATRIX_ROW_H
#define TVMET_XPR_MATRIX_ROW_H
namespace tvmet {
/**
* \class XprMatrixRow MatrixRow.h "tvmet/xpr/MatrixRow.h"
* \brief Expression on matrix used for access on the row vector.
*/
template<class E, int Rows, int Cols>
class XprMatrixRow
: public TvmetBase< XprMatrixRow<E, Rows, Cols> >
{
XprMatrixRow();
XprMatrixRow& operator=(const XprMatrixRow&);
public:
typedef typename E::value_type value_type;
public:
/** Complexity counter. */
enum {
ops_expr = E::ops,
ops = ops_expr/Rows // equal Col accesses
};
public:
/** Constructor. */
explicit XprMatrixRow(const E& e, int no)
: m_expr(e), m_row(no)
{
assert(no < Rows);
}
/** Copy Constructor. Not explicit! */
#if defined(TVMET_OPTIMIZE_XPR_MANUAL_CCTOR)
XprMatrixRow(const XprMatrixRow& rhs)
: m_expr(rhs.m_expr), m_row(rhs.m_row)
{ }
#endif
value_type operator()(int j) const {
assert(j < Cols);
return m_expr(m_row, j);
}
public: // debugging Xpr parse tree
void print_xpr(std::ostream& os, int l=0) const {
os << IndentLevel(l++)
<< "XprMatrixRow[O=" << ops << ", (O=" << ops_expr << ")]<"
<< std::endl;
m_expr.print_xpr(os, l);
os << IndentLevel(l)
<< "R=" << Rows << ", C=" << Cols << std::endl
<< IndentLevel(--l) << ">"
<< ((l != 0) ? "," : "") << std::endl;
}
private:
const E m_expr;
const int m_row;
};
}
#endif // TVMET_XPR_MATRIX_ROW_H
// Local Variables:
// mode:C++
// End:
|
