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val-sel-commit.cpp

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00001 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
00002 /*
00003  *  Main authors:
00004  *     Christian Schulte <schulte@gecode.org>
00005  *
00006  *  Copyright:
00007  *     Christian Schulte, 2012
00008  *
00009  *  This file is part of Gecode, the generic constraint
00010  *  development environment:
00011  *     http://www.gecode.org
00012  *
00013  *  Permission is hereby granted, free of charge, to any person obtaining
00014  *  a copy of this software and associated documentation files (the
00015  *  "Software"), to deal in the Software without restriction, including
00016  *  without limitation the rights to use, copy, modify, merge, publish,
00017  *  distribute, sublicense, and/or sell copies of the Software, and to
00018  *  permit persons to whom the Software is furnished to do so, subject to
00019  *  the following conditions:
00020  *
00021  *  The above copyright notice and this permission notice shall be
00022  *  included in all copies or substantial portions of the Software.
00023  *
00024  *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
00025  *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
00026  *  MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00027  *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
00028  *  LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
00029  *  OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
00030  *  WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00031  *
00032  */
00033 
00034 #include <gecode/float/branch.hh>
00035 
00036 namespace Gecode { namespace Float { namespace Branch {
00037 
00038   ValSelCommitBase<FloatView,FloatNumBranch>*
00039   valselcommit(Space& home, const FloatValBranch& fvb) {
00040     switch (fvb.select()) {
00041     case FloatValBranch::SEL_SPLIT_MIN:
00042       return new (home) ValSelCommit<ValSelLq,ValCommitLqGq>(home,fvb);
00043     case FloatValBranch::SEL_SPLIT_MAX:
00044       return new (home) ValSelCommit<ValSelGq,ValCommitLqGq>(home,fvb);
00045     case FloatValBranch::SEL_SPLIT_RND:
00046       return new (home) ValSelCommit<ValSelRnd,ValCommitLqGq>(home,fvb);
00047     case FloatValBranch::SEL_VAL_COMMIT:
00048       if (!fvb.commit()) {
00049         return new (home)
00050           ValSelCommit<ValSelFunction<FloatView>,ValCommitLqGq>(home,fvb);
00051       } else {
00052         return new (home)
00053           ValSelCommit<ValSelFunction<FloatView>,ValCommitFunction<FloatView> >(home,fvb);
00054       }
00055     default:
00056       throw UnknownBranching("Float::branch");
00057     }
00058   }
00059 
00060   ValSelCommitBase<FloatView,FloatNumBranch>*
00061   valselcommit(Space& home, const FloatAssign& fa) {
00062     switch (fa.select()) {
00063     case FloatAssign::SEL_MIN:
00064       return new (home) ValSelCommit<ValSelLq,ValCommitLqGq>(home,fa);
00065     case FloatAssign::SEL_MAX:
00066       return new (home) ValSelCommit<ValSelGq,ValCommitLqGq>(home,fa);
00067     case FloatAssign::SEL_RND:
00068       return new (home) ValSelCommit<ValSelRnd,ValCommitLqGq>(home,fa);
00069     case FloatAssign::SEL_VAL_COMMIT:
00070       if (!fa.commit()) {
00071         return new (home)
00072           ValSelCommit<ValSelFunction<FloatView>,ValCommitLqGq>(home,fa);
00073       } else {
00074         return new (home)
00075           ValSelCommit<ValSelFunction<FloatView>,ValCommitFunction<FloatView> >(home,fa);
00076       }
00077     default:
00078       throw UnknownBranching("Float::assign");
00079     }
00080   }
00081 
00082 }}}
00083 
00084 // STATISTICS: float-branch
00085