Jip J. Dekker
2572df0663
git-subtree-dir: software/gecode_base git-subtree-split: bbefcea214fec798a0f5acc442581984555acd21
109 lines
3.0 KiB
C++
109 lines
3.0 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, 2008
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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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/**
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* \brief Value branching information
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* \ingroup TaskModelBranch
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*/
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template<class Var>
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class ValBranch {
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public:
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/// The corresponding branching value function
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typedef typename BranchTraits<Var>::Val BranchVal;
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/// The corresponding branching commit function
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typedef typename BranchTraits<Var>::Commit BranchCommit;
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protected:
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/// Random number generator
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Rnd r;
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/// Value function
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BranchVal vf;
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/// Commit function
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BranchCommit cf;
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public:
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/// Initialize
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ValBranch(void);
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/// Initialize with random number generator \a r
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ValBranch(Rnd r);
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/// Initialize with value function \a v and commit function \a c
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ValBranch(BranchVal v, BranchCommit c);
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/// Return random number generator
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Rnd rnd(void) const;
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/// Return value function
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BranchVal val(void) const;
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/// Return commit function
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BranchCommit commit(void) const;
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};
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template<class Var>
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inline
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ValBranch<Var>::ValBranch(void)
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: vf(nullptr), cf(nullptr) {}
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template<class Var>
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inline
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ValBranch<Var>::ValBranch(Rnd r0)
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: r(r0), vf(nullptr), cf(nullptr) {
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if (!r)
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throw UninitializedRnd("ValBranch::ValBranch");
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}
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template<class Var>
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inline
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ValBranch<Var>::ValBranch(BranchVal v, BranchCommit c)
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: vf(v), cf(c) {}
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template<class Var>
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inline Rnd
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ValBranch<Var>::rnd(void) const {
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return r;
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}
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template<class Var>
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inline typename ValBranch<Var>::BranchVal
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ValBranch<Var>::val(void) const {
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return vf;
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}
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template<class Var>
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inline typename ValBranch<Var>::BranchCommit
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ValBranch<Var>::commit(void) const {
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return cf;
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}
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}
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// STATISTICS: kernel-branch
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