comb-ptr-flag.hpp
Go to the documentation of this file.
/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2003
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
*/
namespace Gecode { namespace Int { namespace ViewValGraph {
template<class T>
forceinline
CombPtrFlag<T>::CombPtrFlag(T* p1, T* p2)
: cpf(reinterpret_cast<ptrdiff_t>(p1) ^ reinterpret_cast<ptrdiff_t>(p2)) {}
template<class T>
forceinline T*
CombPtrFlag<T>::ptr(T* p) const {
return reinterpret_cast<T*>((cpf&~1) ^ reinterpret_cast<ptrdiff_t>(p));
}
template<class T>
forceinline int
CombPtrFlag<T>::is_set(void) const {
return static_cast<int>(cpf&1);
}
template<class T>
forceinline void
CombPtrFlag<T>::set(void) {
cpf |= 1;
}
template<class T>
forceinline void
CombPtrFlag<T>::unset(void) {
cpf &= ~1;
}
template<class T>
forceinline void
CombPtrFlag<T>::init(T* p1, T* p2) {
cpf = reinterpret_cast<ptrdiff_t>(p1) ^ reinterpret_cast<ptrdiff_t>(p2);
}
}}}
// STATISTICS: int-prop
Gecode::Int::ViewValGraph::CombPtrFlag::is_set
int is_set(void) const
Check whether flag is set.
Definition comb-ptr-flag.hpp:49
Gecode::Int::ViewValGraph::CombPtrFlag::init
void init(T *p1, T *p2)
Initialize with pointer p1 and p2.
Definition comb-ptr-flag.hpp:67
Gecode::Int::ViewValGraph::CombPtrFlag::set
void set(void)
Set flag.
Definition comb-ptr-flag.hpp:55
Gecode::Int::ViewValGraph::CombPtrFlag::CombPtrFlag
CombPtrFlag(T *p1, T *p2)
Initialize with pointer p1 and p2.
Definition comb-ptr-flag.hpp:38
Gecode::Int::ViewValGraph::CombPtrFlag::ptr
T * ptr(T *p) const
Return the other pointer when p is given.
Definition comb-ptr-flag.hpp:43
Gecode::Int::ViewValGraph::CombPtrFlag::unset
void unset(void)
Clear flag.
Definition comb-ptr-flag.hpp:61
Gecode::Int::ViewValGraph
Support classes for propagators using a view-value graph.
Gecode::Int
Finite domain integers.
Gecode
Gecode toplevel namespace
forceinline
#define forceinline
Definition config.hpp:187