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lin-rel.hpp
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37 
38 namespace Gecode {
39 
40  /*
41  * Operations for linear expressions
42  *
43  */
45  LinRel::LinRel(void) {}
46 
48  LinRel::LinRel(const LinExpr& l, IntRelType irt0, const LinExpr& r)
49  : e(l-r), irt(irt0) {}
50 
52  LinRel::LinRel(const LinExpr& l, IntRelType irt0, int r)
53  : e(l-r), irt(irt0) {}
54 
56  LinRel::LinRel(int l, IntRelType irt0, const LinExpr& r)
57  : e(l-r), irt(irt0) {}
58 
60  LinRel::neg(IntRelType irt) {
61  switch (irt) {
62  case IRT_EQ: return IRT_NQ;
63  case IRT_NQ: return IRT_EQ;
64  case IRT_LQ: return IRT_GR;
65  case IRT_LE: return IRT_GQ;
66  case IRT_GQ: return IRT_LE;
67  case IRT_GR: return IRT_LQ;
68  default: GECODE_NEVER;
69  }
70  return IRT_LQ;
71  }
72 
73  forceinline void
74  LinRel::post(Home home, bool t, IntConLevel icl) const {
75  e.post(home,t ? irt : neg(irt),icl);
76  }
77 
78  forceinline void
79  LinRel::post(Home home, const BoolVar& b, bool t, IntConLevel icl) const {
80  e.post(home,t ? irt : neg(irt),b,icl);
81  }
82 
83 }
84 
85 // STATISTICS: minimodel-any