Jip J. Dekker
3e72b0e857
git-subtree-dir: software/gecode_on_record git-subtree-split: 37ed9bda495ea87e63217c19a374b5a93bb0078e
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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/*
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* Main authors:
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* Christian Schulte <schulte@gecode.org>
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*
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* Copyright:
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* Christian Schulte, 2012
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*
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* This file is part of Gecode, the generic constraint
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* development environment:
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* http://www.gecode.org
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*
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*/
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namespace Gecode {
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/// Combine variable selection criteria for tie-breaking
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template<class VarBranch>
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class TieBreak {
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public:
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/// Branching criteria to try in order
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VarBranch a, b, c, d;
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/// Initialize with variable selection criteria
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TieBreak(VarBranch a0 = VarBranch(),
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VarBranch b0 = VarBranch(),
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VarBranch c0 = VarBranch(),
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VarBranch d0 = VarBranch());
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};
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/**
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* \defgroup TaskModelBranchTieBreak Tie-breaking for variable selection
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*
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* \ingroup TaskModelBranch
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*/
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//@{
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/// Combine variable selection criteria \a a and \a b for tie-breaking
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b);
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/// Combine variable selection criteria \a a, \a b, and \a c for tie-breaking
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b, VarBranch c);
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/// Combine variable selection criteria \a a, \a b, \a c, and \a d for tie-breaking
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b, VarBranch c, VarBranch d);
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//@}
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template<class VarBranch>
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forceinline
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TieBreak<VarBranch>::TieBreak(VarBranch a0,
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VarBranch b0,
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VarBranch c0,
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VarBranch d0)
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: a(a0), b(b0), c(c0), d(d0) {}
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b) {
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TieBreak<VarBranch> ab(a,b);
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return ab;
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}
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b, VarBranch c) {
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TieBreak<VarBranch> abc(a,b,c);
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return abc;
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}
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template<class VarBranch>
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TieBreak<VarBranch>
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tiebreak(VarBranch a, VarBranch b, VarBranch c, VarBranch d) {
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TieBreak<VarBranch> abcd(a,b,c,d);
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return abcd;
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}
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}
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// STATISTICS: kernel-branch
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