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all-interval.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, 2006
8  *
9  * This file is part of Gecode, the generic constraint
10  * development environment:
11  * http://www.gecode.org
12  *
13  * Permission is hereby granted, free of charge, to any person obtaining
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33 
34 #include <gecode/driver.hh>
35 #include <gecode/int.hh>
36 #include <gecode/minimodel.hh>
37 
38 #include <cstdlib>
39 
40 using namespace Gecode;
41 
62 class AllInterval : public Script {
63 private:
65  IntVarArray x;
67  IntVarArray d;
68 public:
71  Script(opt),
72  x(*this, opt.size(), 0, opt.size()-1),
73  d(*this, opt.size()-1, 1, opt.size()-1) {
74  const int n = x.size();
75 
76  // Set up variables for distance
77  for (int i=0; i<n-1; i++)
78  rel(*this, d[i] == abs(x[i+1]-x[i]), opt.ipl());
79 
80  distinct(*this, x, opt.ipl());
81  distinct(*this, d, opt.ipl());
82 
83  // Break mirror symmetry
84  rel(*this, x[0], IRT_LE, x[1]);
85  // Break symmetry of dual solution
86  rel(*this, d[0], IRT_GR, d[n-2]);
87 
89  }
92  : Script(s) {
93  x.update(*this, s.x);
94  d.update(*this, s.d);
95  }
97  virtual Space*
98  copy(void) {
99  return new AllInterval(*this);
100  }
102  virtual void
103  print(std::ostream& os) const {
104  const int n = x.size();
105  os << "\tx[" << n << "] = {";
106  for (int i = 0; i < n-1; i++)
107  os << x[i] << "(" << d[i] << "),";
108  os << x[n-1] << "}" << std::endl;
109  }
110 };
111 
112 
116 int
117 main(int argc, char* argv[]){
118  SizeOptions opt("AllInterval");
119  opt.size(1000);
120  opt.iterations(5);
121  opt.ipl(IPL_BND);
122  opt.parse(argc, argv);
123  if (opt.size() < 2) {
124  std::cerr << "size must be at least 2!" << std::endl;
125  return -1;
126  }
127  Script::run<AllInterval,DFS,SizeOptions>(opt);
128  return 0;
129 }
130 
131 // STATISTICS: example-any
132 
Post propagator for SetVar x
Definition: set.hh:767
int main(int argc, char *argv[])
Main-function.
virtual void print(std::ostream &os) const
Print solution.
unsigned int size(I &i)
Size of all ranges of range iterator i.
Less ( )
Definition: int.hh:929
void ipl(IntPropLevel i)
Set default integer propagation level.
Definition: options.hpp:216
Computation spaces.
Definition: core.hpp:1742
void branch(Home home, const FloatVarArgs &x, FloatVarBranch vars, FloatValBranch vals, FloatBranchFilter bf, FloatVarValPrint vvp)
Branch over x with variable selection vars and value selection vals.
Definition: branch.cpp:39
void iterations(unsigned int i)
Set default number of iterations.
Definition: options.hpp:461
Integer variable array.
Definition: int.hh:763
Gecode toplevel namespace
virtual Space * copy(void)
Copy during cloning.
Options opt
The options.
Definition: test.cpp:97
AllInterval(AllInterval &s)
Constructor for cloning e.
Parametric base-class for scripts.
Definition: driver.hh:729
void parse(int &argc, char *argv[])
Parse options from arguments argv (number is argc)
Definition: options.cpp:548
Example: All-interval series
Bounds propagation.
Definition: int.hh:978
void abs(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition: arithmetic.cpp:41
IntVarBranch INT_VAR_SIZE_MIN(BranchTbl tbl)
Select variable with smallest domain size.
Definition: var.hpp:206
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVal n)
Propagates .
Definition: rel.cpp:43
Gecode::IntSet d(v, 7)
AllInterval(const SizeOptions &opt)
Actual model.
void update(Space &home, VarImpVar< VarImp > &y)
Update this variable to be a clone of variable y.
Definition: var.hpp:116
void distinct(Home home, const IntVarArgs &x, IntPropLevel ipl)
Post propagator for for all .
Definition: distinct.cpp:46
IntValBranch INT_VAL_SPLIT_MIN(void)
Select values not greater than mean of smallest and largest value.
Definition: val.hpp:75
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:234
Greater ( )
Definition: int.hh:931
Gecode::IntArgs i({1, 2, 3, 4})
Options for scripts with additional size parameter
Definition: driver.hh:675