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branch.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, 2002
8  *
9  * Last modified:
10  * $Date: 2010-03-12 08:16:29 +1100 (Fri, 12 Mar 2010) $ by $Author: schulte $
11  * $Revision: 10418 $
12  *
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37 
38 #include <gecode/int/branch.hh>
39 
40 namespace Gecode {
41 
42  void
43  assign(Home home, const IntVarArgs& x, IntAssign vals,
44  const ValBranchOptions& o_vals) {
45  using namespace Int;
46  if (home.failed()) return;
47  ViewArray<IntView> xv(home,x);
49  switch (vals) {
50  case INT_ASSIGN_MIN:
51  {
52  Branch::AssignValMin<IntView> a(home,o_vals);
55  ::post(home,xv,v,a);
56  }
57  break;
58  case INT_ASSIGN_MED:
59  {
60  Branch::AssignValMed<IntView> a(home,o_vals);
63  ::post(home,xv,v,a);
64  }
65  break;
66  case INT_ASSIGN_MAX:
67  {
71  ::post(home,xv,v,a);
72  }
73  break;
74  case INT_ASSIGN_RND:
75  {
76  Branch::AssignValRnd<IntView> a(home,o_vals);
79  ::post(home,xv,v,a);
80  }
81  break;
82  default:
83  throw UnknownBranching("Int::assign");
84  }
85  }
86 
87  void
88  assign(Home home, const BoolVarArgs& x, IntAssign vals,
89  const ValBranchOptions& o_vals) {
90  using namespace Int;
91  if (home.failed()) return;
92  ViewArray<BoolView> xv(home,x);
94  switch (vals) {
95  case INT_ASSIGN_MIN:
96  case INT_ASSIGN_MED: {
100  ::post(home,xv,v,a);
101  }
102  break;
103  case INT_ASSIGN_MAX: {
107  ::post(home,xv,v,a);
108  }
109  break;
110  case INT_ASSIGN_RND: {
111  Branch::AssignValRnd<BoolView> a(home,o_vals);
114  ::post(home,xv,v,a);
115  }
116  break;
117  default:
118  throw UnknownBranching("Int::assign");
119  }
120  }
121 
122  void
124  const ValBranchOptions& o_vals) {
125  IntVarArgs xv(1); xv[0]=x;
126  branch(home, xv, INT_VAR_NONE, vals, VarBranchOptions::def, o_vals);
127  }
128 
129  void
131  const ValBranchOptions& o_vals) {
132  BoolVarArgs xv(1); xv[0]=x;
133  branch(home, xv, INT_VAR_NONE, vals, VarBranchOptions::def, o_vals);
134  }
135 
136  void
137  assign(Home home, IntVar x, IntAssign vals,
138  const ValBranchOptions& o_vals) {
139  IntVarArgs xv(1); xv[0]=x;
140  assign(home, xv, vals, o_vals);
141  }
142 
143  void
144  assign(Home home, BoolVar x, IntAssign vals,
145  const ValBranchOptions& o_vals) {
146  BoolVarArgs xv(1); xv[0]=x;
147  assign(home, xv, vals, o_vals);
148  }
149 
150 }
151 
152 // STATISTICS: int-post