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float-rel.hpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2 /*
3  * Main authors:
4  * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
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7  * Vincent Barichard, 2012
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33 
34 #ifdef GECODE_HAS_FLOAT_VARS
35 
36 namespace Gecode {
37 
38  /*
39  * Operations for linear float relations
40  *
41  */
43  LinFloatRel::LinFloatRel(void) {}
44 
46  LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, const LinFloatExpr& r)
47  : e(l-r), frt(frt0) {}
48 
50  LinFloatRel::LinFloatRel(const LinFloatExpr& l, FloatRelType frt0, FloatVal r)
51  : e(l-r), frt(frt0) {}
52 
54  LinFloatRel::LinFloatRel(FloatVal l, FloatRelType frt0, const LinFloatExpr& r)
55  : e(l-r), frt(frt0) {}
56 
58  LinFloatRel::neg(FloatRelType frt) {
59  switch (frt) {
60  case FRT_EQ: return FRT_NQ;
61  case FRT_NQ: return FRT_EQ;
62  case FRT_LQ: return FRT_GR;
63  case FRT_LE: return FRT_GQ;
64  case FRT_GQ: return FRT_LE;
65  case FRT_GR: return FRT_LQ;
66  default: GECODE_NEVER;
67  }
68  return FRT_LQ;
69  }
70 
71  forceinline void
72  LinFloatRel::post(Home home, bool t) const {
73  e.post(home,t ? frt : neg(frt));
74  }
75 
76  forceinline void
77  LinFloatRel::post(Home home, const BoolVar& b, bool t) const {
78  e.post(home,t ? frt : neg(frt),b);
79  }
80 
81 }
82 
83 #endif
84 
85 // STATISTICS: minimodel-any
struct Gecode::@602::NNF::@65::@66 b
For binary nodes (and, or, eqv)
NNF * l
Left subtree.
Definition: bool-expr.cpp:240
NodeType t
Type of node.
Definition: bool-expr.cpp:230
NNF * r
Right subtree.
Definition: bool-expr.cpp:242
Boolean integer variables.
Definition: int.hh:512
Float value type.
Definition: float.hh:334
Home class for posting propagators
Definition: core.hpp:856
Float expressions
Definition: minimodel.hh:822
void post(Home home, FloatRelType frt) const
Post propagator.
Definition: float-expr.cpp:152
void post(Home home, bool t) const
Post propagator for relation (if t is false for negated relation)
Definition: float-rel.hpp:72
FloatRelType
Relation types for floats.
Definition: float.hh:1068
@ FRT_EQ
Equality ( )
Definition: float.hh:1069
@ FRT_GR
Greater ( )
Definition: float.hh:1074
@ FRT_NQ
Disequality ( )
Definition: float.hh:1070
@ FRT_LE
Less ( )
Definition: float.hh:1072
@ FRT_LQ
Less or equal ( )
Definition: float.hh:1071
@ FRT_GQ
Greater or equal ( )
Definition: float.hh:1073
#define forceinline
Definition: config.hpp:192
#define GECODE_NEVER
Assert that this command is never executed.
Definition: macros.hpp:56