/usr/include/coin/ClpPrimalColumnDantzig.hpp is in coinor-libclp-dev 1.15.5-1ubuntu3.
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 | /* $Id: ClpPrimalColumnDantzig.hpp 1665 2011-01-04 17:55:54Z lou $ */
// Copyright (C) 2002, International Business Machines
// Corporation and others. All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
#ifndef ClpPrimalColumnDantzig_H
#define ClpPrimalColumnDantzig_H
#include "ClpPrimalColumnPivot.hpp"
//#############################################################################
/** Primal Column Pivot Dantzig Algorithm Class
This is simplest choice - choose largest infeasibility
*/
class ClpPrimalColumnDantzig : public ClpPrimalColumnPivot {
public:
///@name Algorithmic methods
//@{
/** Returns pivot column, -1 if none.
Lumbers over all columns - slow
The Packed CoinIndexedVector updates has cost updates - for normal LP
that is just +-weight where a feasibility changed. It also has
reduced cost from last iteration in pivot row
Can just do full price if you really want to be slow
*/
virtual int pivotColumn(CoinIndexedVector * updates,
CoinIndexedVector * spareRow1,
CoinIndexedVector * spareRow2,
CoinIndexedVector * spareColumn1,
CoinIndexedVector * spareColumn2);
/// Just sets model
virtual void saveWeights(ClpSimplex * model, int) {
model_ = model;
}
//@}
///@name Constructors and destructors
//@{
/// Default Constructor
ClpPrimalColumnDantzig();
/// Copy constructor
ClpPrimalColumnDantzig(const ClpPrimalColumnDantzig &);
/// Assignment operator
ClpPrimalColumnDantzig & operator=(const ClpPrimalColumnDantzig& rhs);
/// Destructor
virtual ~ClpPrimalColumnDantzig ();
/// Clone
virtual ClpPrimalColumnPivot * clone(bool copyData = true) const;
//@}
//---------------------------------------------------------------------------
private:
///@name Private member data
//@}
};
#endif
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