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relax.cpp
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1 /* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
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3  * Main authors:
4  * Christian Schulte <schulte@gecode.org>
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7  * Christian Schulte, 2016
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33 
34 #include <gecode/int.hh>
35 #include <gecode/search/relax.hh>
36 
37 namespace Gecode { namespace Int {
38 
40  class Relax {
41  public:
46  };
47 
50  IntView xv(x);
51  return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
52  }
53 
56  BoolView xv(x);
57  return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
58  }
59 
60 }}
61 
62 namespace Gecode {
63 
64  void
65  relax(Home home, const IntVarArgs& x, const IntVarArgs& sx,
66  Rnd r, double p) {
67  if (x.size() != sx.size())
68  throw Int::ArgumentSizeMismatch("Int::relax");
69  if ((p < 0.0) || (p > 1.0))
70  throw Int::OutOfLimits("Int::relax");
71  Int::Relax ir;
72  Search::relax<IntVarArgs,Int::Relax>(home,x,sx,r,p,ir);
73  }
74 
75  void
76  relax(Home home, const BoolVarArgs& x, const BoolVarArgs& sx,
77  Rnd r, double p) {
78  if (x.size() != sx.size())
79  throw Int::ArgumentSizeMismatch("Int::relax");
80  if ((p < 0.0) || (p > 1.0))
81  throw Int::OutOfLimits("Int::relax");
82  Int::Relax ir;
83  Search::relax<BoolVarArgs,Int::Relax>(home,x,sx,r,p,ir);
84  }
85 
86 }
87 
88 // STATISTICS: int-other
89 
int p
Number of positive literals for node type.
Definition: bool-expr.cpp:232
Node * x
Pointer to corresponding Boolean expression node.
Definition: bool-expr.cpp:249
NNF * r
Right subtree.
Definition: bool-expr.cpp:242
int size(void) const
Return size of array (number of elements)
Definition: array.hpp:1607
Passing Boolean variables.
Definition: int.hh:712
Boolean integer variables.
Definition: int.hh:512
int val(void) const
Return assigned value.
Definition: bool.hpp:57
Home class for posting propagators
Definition: core.hpp:856
Passing integer variables.
Definition: int.hh:656
Integer variables.
Definition: int.hh:371
int val(void) const
Return assigned value.
Definition: int.hpp:56
Exception: Arguments are of different size
Definition: exception.hpp:73
Boolean view for Boolean variables.
Definition: view.hpp:1380
ModEvent eq(Space &home, int n)
Restrict domain values to be equal to n.
Definition: bool.hpp:170
Integer view for integer variables.
Definition: view.hpp:129
ModEvent eq(Space &home, int n)
Restrict domain values to be equal to n.
Definition: int.hpp:166
Exception: Value out of limits
Definition: exception.hpp:44
Class for posting equalities for non-relaxed variables.
Definition: relax.cpp:40
ExecStatus operator()(Home home, IntVar x, IntVar sx)
Post the actual equality for non-relaxed variables.
Definition: relax.cpp:49
Random number generator.
Definition: rnd.hpp:42
ExecStatus
Definition: core.hpp:472
@ ES_OK
Execution is okay.
Definition: core.hpp:476
@ ES_FAILED
Execution has resulted in failure.
Definition: core.hpp:474
void relax(Home home, const FloatVarArgs &x, const FloatVarArgs &sx, Rnd r, double p)
Definition: relax.cpp:57
bool me_failed(ModEvent me)
Check whether modification event me is failed.
Definition: modevent.hpp:54
#define forceinline
Definition: config.hpp:192