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dekker.one
1/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
2/*
3 * Main authors:
4 * Christian Schulte <schulte@gecode.org>
5 *
6 * Contributing authors:
7 * Vincent Barichard <Vincent.Barichard@univ-angers.fr>
8 *
9 * Copyright:
10 * Christian Schulte, 2012
11 * Vincent Barichard, 2012
12 *
13 * This file is part of Gecode, the generic constraint
14 * development environment:
15 * http://www.gecode.org
16 *
17 * Permission is hereby granted, free of charge, to any person obtaining
18 * a copy of this software and associated documentation files (the
19 * "Software"), to deal in the Software without restriction, including
20 * without limitation the rights to use, copy, modify, merge, publish,
21 * distribute, sublicense, and/or sell copies of the Software, and to
22 * permit persons to whom the Software is furnished to do so, subject to
23 * the following conditions:
24 *
25 * The above copyright notice and this permission notice shall be
26 * included in all copies or substantial portions of the Software.
27 *
28 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
29 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
31 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
32 * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
33 * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
34 * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
35 *
36 */
37
38namespace Gecode { namespace Float { namespace Branch {
39
40 // Minimum merit
41 forceinline
42 MeritMin::MeritMin(Space& home, const VarBranch<Var>& vb)
43 : MeritBase<FloatView,double>(home,vb) {}
44 forceinline
45 MeritMin::MeritMin(Space& home, MeritMin& m)
46 : MeritBase<FloatView,double>(home,m) {}
47 forceinline double
48 MeritMin::operator ()(const Space&, FloatView x, int) {
49 return x.min();
50 }
51
52 // Maximum merit
53 forceinline
54 MeritMax::MeritMax(Space& home, const VarBranch<Var>& vb)
55 : MeritBase<FloatView,double>(home,vb) {}
56 forceinline
57 MeritMax::MeritMax(Space& home, MeritMax& m)
58 : MeritBase<FloatView,double>(home,m) {}
59 forceinline double
60 MeritMax::operator ()(const Space&, FloatView x, int) {
61 return x.max();
62 }
63
64 // Size merit
65 forceinline
66 MeritSize::MeritSize(Space& home, const VarBranch<Var>& vb)
67 : MeritBase<FloatView,double>(home,vb) {}
68 forceinline
69 MeritSize::MeritSize(Space& home, MeritSize& m)
70 : MeritBase<FloatView,double>(home,m) {}
71 forceinline double
72 MeritSize::operator ()(const Space&, FloatView x, int) {
73 return x.size();
74 }
75
76 // Degree over size merit
77 forceinline
78 MeritDegreeSize::MeritDegreeSize(Space& home, const VarBranch<Var>& vb)
79 : MeritBase<FloatView,double>(home,vb) {}
80 forceinline
81 MeritDegreeSize::MeritDegreeSize(Space& home,
82 MeritDegreeSize& m)
83 : MeritBase<FloatView,double>(home,m) {}
84 forceinline double
85 MeritDegreeSize::operator ()(const Space&, FloatView x, int) {
86 return x.size() / static_cast<double>(x.degree());
87 }
88
89 // AFC over size merit
90 forceinline
91 MeritAFCSize::MeritAFCSize(Space& home, const VarBranch<Var>& vb)
92 : MeritBase<FloatView,double>(home,vb), afc(vb.afc()) {}
93 forceinline
94 MeritAFCSize::MeritAFCSize(Space& home, MeritAFCSize& m)
95 : MeritBase<FloatView,double>(home,m), afc(m.afc) {}
96 forceinline double
97 MeritAFCSize::operator ()(const Space&, FloatView x, int) {
98 return x.afc() / static_cast<double>(x.size());
99 }
100 forceinline bool
101 MeritAFCSize::notice(void) const {
102 return false;
103 }
104 forceinline void
105 MeritAFCSize::dispose(Space&) {
106 // Not needed
107 afc.~AFC();
108 }
109
110 // Action over size merit
111 forceinline
112 MeritActionSize::MeritActionSize(Space& home,
113 const VarBranch<Var>& vb)
114 : MeritBase<FloatView,double>(home,vb), action(vb.action()) {}
115 forceinline
116 MeritActionSize::MeritActionSize(Space& home,
117 MeritActionSize& m)
118 : MeritBase<FloatView,double>(home,m), action(m.action) {}
119 forceinline double
120 MeritActionSize::operator ()(const Space&, FloatView x, int i) {
121 return action[i] / static_cast<double>(x.size());
122 }
123 forceinline bool
124 MeritActionSize::notice(void) const {
125 return true;
126 }
127 forceinline void
128 MeritActionSize::dispose(Space&) {
129 action.~Action();
130 }
131
132
133 // CHB Q-score over size merit
134 forceinline
135 MeritCHBSize::MeritCHBSize(Space& home,
136 const VarBranch<Var>& vb)
137 : MeritBase<FloatView,double>(home,vb), chb(vb.chb()) {}
138 forceinline
139 MeritCHBSize::MeritCHBSize(Space& home,
140 MeritCHBSize& m)
141 : MeritBase<FloatView,double>(home,m), chb(m.chb) {}
142 forceinline double
143 MeritCHBSize::operator ()(const Space&, FloatView x, int i) {
144 return chb[i] / static_cast<double>(x.size());
145 }
146 forceinline bool
147 MeritCHBSize::notice(void) const {
148 return true;
149 }
150 forceinline void
151 MeritCHBSize::dispose(Space&) {
152 chb.~CHB();
153 }
154
155}}}
156
157// STATISTICS: float-branch