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Diffstat (limited to 'build/Bonmin/include/coin/CoinPresolveUseless.hpp')
-rw-r--r-- | build/Bonmin/include/coin/CoinPresolveUseless.hpp | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/build/Bonmin/include/coin/CoinPresolveUseless.hpp b/build/Bonmin/include/coin/CoinPresolveUseless.hpp deleted file mode 100644 index 624a373..0000000 --- a/build/Bonmin/include/coin/CoinPresolveUseless.hpp +++ /dev/null @@ -1,63 +0,0 @@ -/* $Id: CoinPresolveUseless.hpp 1566 2012-11-29 19:33:56Z 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 CoinPresolveUseless_H -#define CoinPresolveUseless_H -#define USELESS 20 - -class useless_constraint_action : public CoinPresolveAction { - struct action { - double rlo; - double rup; - const int *rowcols; - const double *rowels; - int row; - int ninrow; - }; - - const int nactions_; - const action *const actions_; - - useless_constraint_action(int nactions, - const action *actions, - const CoinPresolveAction *next); - - public: - const char *name() const; - - // These rows are asserted to be useless, - // that is, given a solution the row activity - // must be in range. - static const CoinPresolveAction *presolve(CoinPresolveMatrix * prob, - const int *useless_rows, - int nuseless_rows, - const CoinPresolveAction *next); - - void postsolve(CoinPostsolveMatrix *prob) const; - - virtual ~useless_constraint_action(); - -}; - -/*! \relates useless_constraint_action - \brief Scan constraints looking for useless constraints - - A front end to identify useless constraints and hand them to - useless_constraint_action::presolve() for processing. - - In a bit more detail, the routine implements a greedy algorithm that - identifies a set of necessary constraints. A constraint is necessary if it - implies a tighter bound on a variable than the original column bound. These - tighter column bounds are then used to calculate row activity and identify - constraints that are useless given the presence of the necessary - constraints. -*/ - -const CoinPresolveAction *testRedundant(CoinPresolveMatrix *prob, - const CoinPresolveAction *next) ; - - - -#endif |