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view-sel.cpp
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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, 2012
8 *
9 * This file is part of Gecode, the generic constraint
10 * development environment:
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33
35
36namespace Gecode { namespace Float { namespace Branch {
37
38 ViewSel<FloatView>*
39 viewsel(Space& home, const FloatVarBranch& fvb) {
40 switch (fvb.select()) {
42 return new (home) ViewSelNone<FloatView>(home,fvb);
44 return new (home) ViewSelRnd<FloatView>(home,fvb);
45 default: break;
46 }
47 if (fvb.tbl() != NULL) {
48 switch (fvb.select()) {
50 return new (home) ViewSelMinTbl<MeritFunction<FloatView>>(home,fvb);
52 return new (home) ViewSelMaxTbl<MeritFunction<FloatView>>(home,fvb);
54 return new (home) ViewSelMinTbl<MeritMin>(home,fvb);
56 return new (home) ViewSelMaxTbl<MeritMin>(home,fvb);
58 return new (home) ViewSelMinTbl<MeritMax>(home,fvb);
60 return new (home) ViewSelMaxTbl<MeritMax>(home,fvb);
62 return new (home) ViewSelMinTbl<MeritSize>(home,fvb);
64 return new (home) ViewSelMaxTbl<MeritSize>(home,fvb);
66 return new (home) ViewSelMinTbl<MeritDegree<FloatView>>(home,fvb);
68 return new (home) ViewSelMaxTbl<MeritDegree<FloatView>>(home,fvb);
70 return new (home) ViewSelMinTbl<MeritAFC<FloatView>>(home,fvb);
72 return new (home) ViewSelMaxTbl<MeritAFC<FloatView>>(home,fvb);
74 return new (home) ViewSelMinTbl<MeritAction<FloatView>>(home,fvb);
76 return new (home) ViewSelMaxTbl<MeritAction<FloatView>>(home,fvb);
78 return new (home) ViewSelMinTbl<MeritCHB<FloatView>>(home,fvb);
80 return new (home) ViewSelMaxTbl<MeritCHB<FloatView>>(home,fvb);
82 return new (home) ViewSelMinTbl<MeritDegreeSize>(home,fvb);
84 return new (home) ViewSelMaxTbl<MeritDegreeSize>(home,fvb);
86 return new (home) ViewSelMinTbl<MeritAFCSize>(home,fvb);
88 return new (home) ViewSelMaxTbl<MeritAFCSize>(home,fvb);
90 return new (home) ViewSelMinTbl<MeritActionSize>(home,fvb);
92 return new (home) ViewSelMaxTbl<MeritActionSize>(home,fvb);
94 return new (home) ViewSelMinTbl<MeritCHBSize>(home,fvb);
96 return new (home) ViewSelMaxTbl<MeritCHBSize>(home,fvb);
97 default:
98 throw UnknownBranching("Float::branch");
99 }
100 } else {
101 switch (fvb.select()) {
103 return new (home) ViewSelMin<MeritFunction<FloatView>>(home,fvb);
105 return new (home) ViewSelMax<MeritFunction<FloatView>>(home,fvb);
107 return new (home) ViewSelMin<MeritMin>(home,fvb);
109 return new (home) ViewSelMax<MeritMin>(home,fvb);
111 return new (home) ViewSelMin<MeritMax>(home,fvb);
113 return new (home) ViewSelMax<MeritMax>(home,fvb);
115 return new (home) ViewSelMin<MeritSize>(home,fvb);
117 return new (home) ViewSelMax<MeritSize>(home,fvb);
119 return new (home) ViewSelMin<MeritDegree<FloatView>>(home,fvb);
121 return new (home) ViewSelMax<MeritDegree<FloatView>>(home,fvb);
123 return new (home) ViewSelMin<MeritAFC<FloatView>>(home,fvb);
125 return new (home) ViewSelMax<MeritAFC<FloatView>>(home,fvb);
127 return new (home) ViewSelMin<MeritAction<FloatView>>(home,fvb);
129 return new (home) ViewSelMax<MeritAction<FloatView>>(home,fvb);
131 return new (home) ViewSelMin<MeritCHB<FloatView>>(home,fvb);
133 return new (home) ViewSelMax<MeritCHB<FloatView>>(home,fvb);
135 return new (home) ViewSelMin<MeritDegreeSize>(home,fvb);
137 return new (home) ViewSelMax<MeritDegreeSize>(home,fvb);
139 return new (home) ViewSelMin<MeritAFCSize>(home,fvb);
141 return new (home) ViewSelMax<MeritAFCSize>(home,fvb);
143 return new (home) ViewSelMin<MeritActionSize>(home,fvb);
145 return new (home) ViewSelMax<MeritActionSize>(home,fvb);
147 return new (home) ViewSelMin<MeritCHBSize>(home,fvb);
149 return new (home) ViewSelMax<MeritCHBSize>(home,fvb);
150 default:
151 throw UnknownBranching("Float::branch");
152 }
153 }
155 return NULL;
156 }
157
158}}}
159
160
161// STATISTICS: float-branch
162
Which variable to select for branching.
Definition float.hh:1674
Select select(void) const
Return selection strategy.
Definition var.hpp:69
@ SEL_ACTION_SIZE_MIN
With smallest action divided by domain size.
Definition float.hh:1700
@ SEL_ACTION_SIZE_MAX
With largest action divided by domain size.
Definition float.hh:1701
@ SEL_MIN_MIN
With smallest min.
Definition float.hh:1690
@ SEL_AFC_SIZE_MIN
With smallest accumulated failure count divided by domain size.
Definition float.hh:1698
@ SEL_MAX_MAX
With largest max.
Definition float.hh:1693
@ SEL_AFC_SIZE_MAX
With largest accumulated failure count divided by domain size.
Definition float.hh:1699
@ SEL_CHB_MAX
With highest CHB Q-score.
Definition float.hh:1689
@ SEL_DEGREE_SIZE_MIN
With smallest degree divided by domain size.
Definition float.hh:1696
@ SEL_MIN_MAX
With largest min.
Definition float.hh:1691
@ SEL_CHB_SIZE_MIN
With smallest CHB Q-score divided by domain size.
Definition float.hh:1702
@ SEL_NONE
First unassigned.
Definition float.hh:1678
@ SEL_MERIT_MIN
With least merit.
Definition float.hh:1680
@ SEL_ACTION_MAX
With highest action.
Definition float.hh:1687
@ SEL_CHB_MIN
With lowest CHB Q-score.
Definition float.hh:1688
@ SEL_DEGREE_MAX
With largest degree.
Definition float.hh:1683
@ SEL_DEGREE_SIZE_MAX
With largest degree divided by domain size.
Definition float.hh:1697
@ SEL_DEGREE_MIN
With smallest degree.
Definition float.hh:1682
@ SEL_MERIT_MAX
With highest merit.
Definition float.hh:1681
@ SEL_MAX_MIN
With smallest max.
Definition float.hh:1692
@ SEL_CHB_SIZE_MAX
With largest CHB Q-score divided by domain size.
Definition float.hh:1703
@ SEL_RND
Random (uniform, for tie breaking)
Definition float.hh:1679
@ SEL_AFC_MAX
With largest accumulated failure count.
Definition float.hh:1685
@ SEL_SIZE_MAX
With largest domain size.
Definition float.hh:1695
@ SEL_AFC_MIN
With smallest accumulated failure count.
Definition float.hh:1684
@ SEL_ACTION_MIN
With lowest action.
Definition float.hh:1686
@ SEL_SIZE_MIN
With smallest domain size.
Definition float.hh:1694
Exception: Unknown value or variable selection passed as argument
Merit class for AFC.
Definition merit.hpp:108
Merit class for action.
Definition merit.hpp:130
Merit class for CHB.
Definition merit.hpp:153
Merit class for degree.
Definition merit.hpp:93
Merit class for user-defined merit function.
Definition merit.hpp:68
Computation spaces.
Definition core.hpp:1744
BranchTbl tbl(void) const
Return tie-break limit function.
Definition var.hpp:168
Select view with largest merit taking tie-break limit into account.
Definition view-sel.hpp:355
Select view with largest merit.
Definition view-sel.hpp:335
Select view with least merit taking tie-break limit into account.
Definition view-sel.hpp:315
Select view with least merit.
Definition view-sel.hpp:295
Select the first unassigned view.
Definition view-sel.hpp:109
Select a view randomly.
Definition view-sel.hpp:149
Float branchers.
ViewSel< FloatView > * viewsel(Space &home, const FloatVarBranch &fvb)
Return view selectors for float views.
Definition view-sel.cpp:39
Floating point numbers.
Gecode toplevel namespace
#define GECODE_NEVER
Assert that this command is never executed.
Definition macros.hpp:56