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values-minus.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 Iter { namespace Values {
00035 
00047   class Minus : public ValueListIter {
00048   public:
00050 
00051 
00052     Minus(void);
00054     Minus(const Minus& m);
00056     template<class I>
00057     Minus(Region& r, I& i);
00059     template<class I>
00060     void init(Region& r, I& i);
00062     Minus& operator =(const Minus& m);
00064   };
00065 
00066 
00067   forceinline
00068   Minus::Minus(void) {}
00069 
00070   forceinline
00071   Minus::Minus(const Minus& m)
00072     : ValueListIter(m) {}
00073 
00074   template<class I>
00075   void
00076   Minus::init(Region& r, I& i) {
00077     ValueListIter::init(r);
00078     ValueList* p = NULL;
00079     for (; i(); ++i) {
00080       ValueList* t = new (*vlio) ValueList;
00081       t->next = p;
00082       t->val = -i.val();
00083       p = t;
00084     }
00085     ValueListIter::set(p);
00086   }
00087 
00088   template<class I>
00089   forceinline
00090   Minus::Minus(Region& r, I& i) {
00091     init(r,i);
00092   }
00093 
00094   forceinline Minus&
00095   Minus::operator =(const Minus& m) {
00096     return static_cast<Minus&>(ValueListIter::operator =(m));
00097   }
00098 
00099 }}}
00100 
00101 // STATISTICS: iter-any