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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
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9  * Last modified:
10  * $Date: 2015-09-11 16:29:45 +0200 (Fri, 11 Sep 2015) $ by $Author: schulte $
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37 
38 #include <gecode/driver.hh>
39 #include <gecode/int.hh>
40 #include <gecode/minimodel.hh>
41 
42 #include <cstdlib>
43 
44 using namespace Gecode;
45 
66 class AllInterval : public Script {
67 private:
69  IntVarArray x;
71  IntVarArray d;
72 public:
75  Script(opt),
76  x(*this, opt.size(), 0, opt.size()-1),
77  d(*this, opt.size()-1, 1, opt.size()-1) {
78  const int n = x.size();
79 
80  // Set up variables for distance
81  for (int i=0; i<n-1; i++)
82  rel(*this, d[i] == abs(x[i+1]-x[i]), opt.ipl());
83 
84  distinct(*this, x, opt.ipl());
85  distinct(*this, d, opt.ipl());
86 
87  // Break mirror symmetry
88  rel(*this, x[0], IRT_LE, x[1]);
89  // Break symmetry of dual solution
90  rel(*this, d[0], IRT_GR, d[n-2]);
91 
93  }
95  AllInterval(bool share, AllInterval& s)
96  : Script(share, s) {
97  x.update(*this, share, s.x);
98  d.update(*this, share, s.d);
99  }
101  virtual Space*
102  copy(bool share) {
103  return new AllInterval(share, *this);
104  }
106  virtual void
107  print(std::ostream& os) const {
108  const int n = x.size();
109  os << "\tx[" << n << "] = {";
110  for (int i = 0; i < n-1; i++)
111  os << x[i] << "(" << d[i] << "),";
112  os << x[n-1] << "}" << std::endl;
113  }
114 };
115 
116 
120 int
121 main(int argc, char* argv[]){
122  SizeOptions opt("AllInterval");
123  opt.size(1000);
124  opt.iterations(5);
125  opt.ipl(IPL_BND);
126  opt.parse(argc, argv);
127  if (opt.size() < 2) {
128  std::cerr << "size must be at least 2!" << std::endl;
129  return -1;
130  }
131  Script::run<AllInterval,DFS,SizeOptions>(opt);
132  return 0;
133 }
134 
135 // STATISTICS: example-any
136 
Bounds propagation.
Definition: int.hh:959
void size(unsigned int s)
Set default size.
Definition: options.hpp:557
Options for scripts with additional size parameter
Definition: driver.hh:649
virtual Space * copy(bool share)
Copy during cloning.
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:43
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:985
AllInterval(bool share, AllInterval &s)
Constructor for cloning e.
void abs(Home home, FloatVar x0, FloatVar x1)
Post propagator for .
Definition: arithmetic.cpp:45
void parse(int &argc, char *argv[])
Parse options from arguments argv (number is argc)
Definition: options.cpp:622
Integer variable array.
Definition: int.hh:744
int main(int argc, char *argv[])
Main-function.
void ipl(IntPropLevel i)
Set default integer propagation level.
Definition: options.hpp:220
Greater ( )
Definition: int.hh:912
Computation spaces.
Definition: core.hpp:1748
Parametric base-class for scripts.
Definition: driver.hh:703
void iterations(unsigned int i)
Set default number of iterations.
Definition: options.hpp:465
Gecode::IntSet d(v, 7)
void update(Space &, bool share, VarArray< Var > &a)
Update array to be a clone of array a.
Definition: array.hpp:1072
Gecode::IntArgs i(4, 1, 2, 3, 4)
int n
Number of negative literals for node type.
Definition: bool-expr.cpp:238
Options opt
The options.
Definition: test.cpp:101
unsigned int size(I &i)
Size of all ranges of range iterator i.
void distinct(Home home, const IntVarArgs &x, IntPropLevel ipl)
Post propagator for for all .
Definition: distinct.cpp:50
Less ( )
Definition: int.hh:910
IntVarBranch INT_VAR_SIZE_MIN(BranchTbl tbl)
Select variable with smallest domain size.
Definition: var.hpp:210
void rel(Home home, FloatVar x0, FloatRelType frt, FloatVal n)
Propagates .
Definition: rel.cpp:47
Post propagator for SetVar x
Definition: set.hh:784
IntValBranch INT_VAL_SPLIT_MIN(void)
Select values not greater than mean of smallest and largest value.
Definition: val.hpp:79
Gecode toplevel namespace
Example: All-interval series
AllInterval(const SizeOptions &opt)
Actual model.
virtual void print(std::ostream &os) const
Print solution.