/usr/include/gecode/minimodel/ldsb.hpp is in libgecode-dev 4.4.0-5.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/*
* Main authors:
* Christopher Mears <chris.mears@monash.edu>
*
* Copyright:
* Christopher Mears, 2012
*
* Last modified:
* $Date: 2013-05-22 04:21:36 +0200 (Wed, 22 May 2013) $ by $Author: mears $
* $Revision: 13653 $
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
namespace Gecode {
/** \brief Interchangeable rows symmetry specification.
*/
template<class A>
SymmetryHandle
rows_interchange(const Matrix<A>& m) {
typename Matrix<A>::ArgsType xs;
for (int r = 0 ; r < m.height() ; r++)
xs << m.row(r);
return VariableSequenceSymmetry(xs, m.width());
}
/** \brief Interchangeable columns symmetry specification.
*/
template<class A>
SymmetryHandle
columns_interchange(const Matrix<A>& m) {
typename Matrix<A>::ArgsType xs;
for (int c = 0 ; c < m.width() ; c++)
xs << m.col(c);
return VariableSequenceSymmetry(xs, m.height());
}
/** \brief Reflect rows symmetry specification.
*/
template<class A>
SymmetryHandle
rows_reflect(const Matrix<A>& m) {
int nrows = m.height();
int ncols = m.width();
// Length of each sequence in the symmetry.
int length = (nrows/2) * ncols;
typename Matrix<A>::ArgsType xs(length * 2);
for (int i = 0 ; i < length ; i++) {
// Break position i into its coordinates
int r1 = i/ncols;
int c1 = i%ncols;
// r2 is the row symmetric with r1
int r2 = nrows - r1 - 1;
// The column remains the same
int c2 = c1;
xs[i] = m(c1,r1);
xs[length+i] = m(c2,r2);
}
return VariableSequenceSymmetry(xs, length);
}
/** \brief Reflect columns symmetry specification.
*/
template<class A>
SymmetryHandle columns_reflect(const Matrix<A>& m) {
int nrows = m.height();
int ncols = m.width();
// Length of each sequence in the symmetry.
int length = (ncols/2) * nrows;
typename Matrix<A>::ArgsType xs(length * 2);
for (int i = 0 ; i < length ; i++) {
// Break position i into its coordinates
int r1 = i/ncols;
int c1 = i%ncols;
// c2 is the column symmetric with c1
int c2 = ncols - c1 - 1;
// The row remains the same
int r2 = r1;
xs[i] = m(c1,r1);
xs[length+i] = m(c2,r2);
}
return VariableSequenceSymmetry(xs, length);
}
/** \brief Reflect around main diagonal symmetry specification.
*/
template<class A>
SymmetryHandle diagonal_reflect(const Matrix<A>& m) {
int nrows = m.height();
int ncols = m.width();
typename Matrix<A>::ArgsType a1;
typename Matrix<A>::ArgsType a2;
for (int i = 0 ; i < nrows ; i++) {
for (int j = i+1 ; j < ncols ; j++) {
a1 << m(j,i);
a2 << m(i,j);
}
}
typename Matrix<A>::ArgsType aboth;
aboth << a1;
aboth << a2;
return VariableSequenceSymmetry(aboth, a1.size());
}
}
// STATISTICS: minimodel-any
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