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comb-ptr-flag.hpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
5  *
6  * Copyright:
7  * Christian Schulte, 2003
8  *
9  * This file is part of Gecode, the generic constraint
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33 
34 namespace Gecode { namespace Int { namespace ViewValGraph {
35 
36  template<class T>
39  : cpf(reinterpret_cast<ptrdiff_t>(p1) ^ reinterpret_cast<ptrdiff_t>(p2)) {}
40 
41  template<class T>
42  forceinline T*
43  CombPtrFlag<T>::ptr(T* p) const {
44  return reinterpret_cast<T*>((cpf&~1) ^ reinterpret_cast<ptrdiff_t>(p));
45  }
46 
47  template<class T>
48  forceinline int
49  CombPtrFlag<T>::is_set(void) const {
50  return static_cast<int>(cpf&1);
51  }
52 
53  template<class T>
54  forceinline void
56  cpf |= 1;
57  }
58 
59  template<class T>
62  cpf &= ~1;
63  }
64 
65  template<class T>
67  CombPtrFlag<T>::init(T* p1, T* p2) {
68  cpf = reinterpret_cast<ptrdiff_t>(p1) ^ reinterpret_cast<ptrdiff_t>(p2);
69  }
70 
71 }}}
72 
73 // STATISTICS: int-prop
74 
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
int is_set(void) const
Check whether flag is set.
void init(T *p1, T *p2)
Initialize with pointer p1 and p2.
CombPtrFlag(T *p1, T *p2)
Initialize with pointer p1 and p2.
T * ptr(T *p) const
Return the other pointer when p is given.
#define forceinline
Definition: config.hpp:192