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fwd-to-bwd.hpp

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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, 2009
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 namespace Gecode { namespace Int {
00035 
00036   /*
00037    * Task mapper: map forward task to view to backward task View
00038    */
00039   template<class TaskView>
00040   forceinline int
00041   FwdToBwd<TaskView>::est(void) const {
00042     return -TaskView::lct();
00043   }
00044   template<class TaskView>
00045   forceinline int
00046   FwdToBwd<TaskView>::ect(void) const {
00047     return -TaskView::lst();
00048   }
00049   template<class TaskView>
00050   forceinline int
00051   FwdToBwd<TaskView>::lst(void) const {
00052     return -TaskView::ect();
00053   }
00054   template<class TaskView>
00055   forceinline int
00056   FwdToBwd<TaskView>::lct(void) const {
00057     return -TaskView::est();
00058   }
00059   template<class TaskView>
00060   forceinline int
00061   FwdToBwd<TaskView>::pmin(void) const {
00062     return TaskView::pmin();
00063   }
00064   template<class TaskView>
00065   forceinline int
00066   FwdToBwd<TaskView>::pmax(void) const {
00067     return TaskView::pmax();
00068   }
00069 
00070   template<class TaskView>
00071   forceinline ModEvent
00072   FwdToBwd<TaskView>::est(Space& home, int n) {
00073     return TaskView::lct(home,-n);
00074   }
00075   template<class TaskView>
00076   forceinline ModEvent
00077   FwdToBwd<TaskView>::ect(Space& home, int n) {
00078     return TaskView::lst(home,-n);
00079   }
00080   template<class TaskView>
00081   forceinline ModEvent
00082   FwdToBwd<TaskView>::lst(Space& home, int n) {
00083     return TaskView::ect(home,-n);
00084   }
00085   template<class TaskView>
00086   forceinline ModEvent
00087   FwdToBwd<TaskView>::lct(Space& home, int n) {
00088     return TaskView::est(home,-n);
00089   }
00090   template<class TaskView>
00091   forceinline ModEvent
00092   FwdToBwd<TaskView>::norun(Space& home, int e, int l) {
00093     return TaskView::norun(home,-l,-e);
00094   }
00095 
00096 }}
00097 
00098 // STATISTICS: int-var