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bool-delta.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, 2016
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 {
00035 
00036   forceinline
00037   BoolTraceDelta::BoolTraceDelta(Int::BoolTraceView, Int::BoolView n,
00038                                  const Delta&)
00039     : delta(1-n.val()) {}
00040   forceinline bool
00041   BoolTraceDelta::operator ()(void) const {
00042     return delta >= 0;
00043   }
00044   forceinline void
00045   BoolTraceDelta::operator ++(void) {
00046     delta = -1;
00047   }
00048   forceinline int
00049   BoolTraceDelta::min(void) const {
00050     return delta;
00051   }
00052   forceinline int
00053   BoolTraceDelta::max(void) const {
00054     return delta;
00055   }
00056   forceinline unsigned int
00057   BoolTraceDelta::width(void) const {
00058     return 1U;
00059   }
00060 
00061 }
00062 
00063 // STATISTICS: int-trace