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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>
5 *
6 * Copyright:
7 * Vincent Barichard, 2012
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33
34#ifdef GECODE_HAS_FLOAT_VARS
35
36namespace 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
NNF * l
Left subtree.
struct Gecode::@603::NNF::@65::@66 b
For binary nodes (and, or, eqv)
NodeType t
Type of node.
bool neg
Is atomic formula negative.
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.
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
Gecode toplevel namespace
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition set.hh:767
#define forceinline
Definition config.hpp:187
#define GECODE_NEVER
Assert that this command is never executed.
Definition macros.hpp:56