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float-rel.hpp
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7  * Vincent Barichard, 2012
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37 
38 #ifdef GECODE_HAS_FLOAT_VARS
39 
40 namespace Gecode {
41 
42  /*
43  * Operations for linear float relations
44  *
45  */
47  LinFloatRel::LinFloatRel(void) {}
48 
50  LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, const LinFloatExpr& r)
51  : e(l-r), frt(frt0) {}
52 
54  LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, FloatVal r)
55  : e(l-r), frt(frt0) {}
56 
58  LinFloatRel::LinFloatRel(FloatVal l, FloatRelType frt0, const LinFloatExpr& r)
59  : e(l-r), frt(frt0) {}
60 
62  LinFloatRel::neg(FloatRelType frt) {
63  switch (frt) {
64  case FRT_EQ: return FRT_NQ;
65  case FRT_NQ: return FRT_EQ;
66  case FRT_LQ: return FRT_GR;
67  case FRT_LE: return FRT_GQ;
68  case FRT_GQ: return FRT_LE;
69  case FRT_GR: return FRT_LQ;
70  default: GECODE_NEVER;
71  }
72  return FRT_LQ;
73  }
74 
75  forceinline void
76  LinFloatRel::post(Home home, bool t) const {
77  e.post(home,t ? frt : neg(frt));
78  }
79 
80  forceinline void
81  LinFloatRel::post(Home home, const BoolVar& b, bool t) const {
82  e.post(home,t ? frt : neg(frt),b);
83  }
84 
85 }
86 
87 #endif
88 
89 // STATISTICS: minimodel-any
void post(Home home, FloatRelType frt) const
Post propagator.
Definition: float-expr.cpp:156
NodeType t
Type of node.
Definition: bool-expr.cpp:234
NNF * l
Left subtree.
Definition: bool-expr.cpp:244
Disequality ( )
Definition: float.hh:1056
Less or equal ( )
Definition: float.hh:1057
Less ( )
Definition: float.hh:1058
Greater or equal ( )
Definition: float.hh:1059
NNF * r
Right subtree.
Definition: bool-expr.cpp:246
FloatRelType
Relation types for floats.
Definition: float.hh:1054
Float expressions
Definition: minimodel.hh:715
Equality ( )
Definition: float.hh:1055
Greater ( )
Definition: float.hh:1060
Boolean integer variables.
Definition: int.hh:491
Float value type.
Definition: float.hh:321
#define forceinline
Definition: config.hpp:132
struct Gecode::@518::NNF::@57::@58 b
For binary nodes (and, or, eqv)
Gecode toplevel namespace
Home class for posting propagators
Definition: core.hpp:717
#define GECODE_NEVER
Assert that this command is never executed.
Definition: macros.hpp:60
void post(Home home, bool t) const
Post propagator for relation (if t is false for negated relation)
Definition: float-rel.hpp:76