/usr/include/gtkmathview/MathView/SparseMap.hh is in libgtkmathview-dev 0.8.0-7.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 | // Copyright (C) 2000-2007, Luca Padovani <padovani@sti.uniurb.it>.
//
// This file is part of GtkMathView, a flexible, high-quality rendering
// engine for MathML documents.
//
// GtkMathView 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 3 of the License, or
// (at your option) any later version.
//
// GtkMathView 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 program. If not, see <http://www.gnu.org/licenses/>.
#ifndef __SparseMap_hh__
#define __SparseMap_hh__
#include "gmv_defines.h"
template <class T, int M, int N>
class GMV_MathView_EXPORT SparseMap
{
public:
SparseMap(void)
{
for (unsigned i = 0; i < (1 << N); i++)
defData[i] = T();
for (unsigned i = 0; i < (1 << M); i++)
data[i] = defData;
}
~SparseMap()
{
for (unsigned i = 0; i < (1 << M); i++)
{
if (data[i] != defData) delete [] data[i];
data[i] = 0;
}
}
protected:
unsigned I(unsigned index) const
{ return index >> N; }
unsigned J(unsigned index) const
{ return index & ((1 << N) - 1); }
public:
void set(size_t index, const T& v)
{
unsigned i = I(index);
assert(i < (1 << M));
if (data[i] == defData)
{
data[i] = new T[1 << N];
for (unsigned j = 0; j < (1 << N); j++)
data[i][j] = T();
}
data[i][J(index)] = v;
}
const T& operator[](size_t index) const
{ return data[I(index)][J(index)]; }
private:
typedef T* TBlock;
TBlock data[1 << M];
T defData[1 << N];
};
#endif // __SparseMap_hh__
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