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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, 2007
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   forceinline
00037   IntDelta::IntDelta(void)
00038     : _min(1), _max(0) {}
00039   forceinline
00040   IntDelta::IntDelta(int min, int max)
00041     : _min(min), _max(max) {}
00042   forceinline
00043   IntDelta::IntDelta(int min)
00044     : _min(min) {}
00045   forceinline int
00046   IntDelta::min(void) const {
00047     return _min;
00048   }
00049   forceinline int
00050   IntDelta::max(void) const {
00051     return _max;
00052   }
00053   forceinline unsigned int
00054   IntDelta::width(void) const {
00055     return static_cast<unsigned int>(_max - _min + 1);
00056   }
00057   forceinline bool
00058   IntDelta::any(void) const {
00059     return _min > _max;
00060   }
00061 
00062 }}
00063 
00064 // STATISTICS: int-var