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relax.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, 2016
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33
34#include <gecode/set.hh>
36
37namespace Gecode { namespace Set {
38
40 class Relax {
41 public:
44 };
45
48 SetView xv(x);
49 SetView sxv(sx);
50 SetVarGlbRanges l(sxv);
51 GECODE_ME_CHECK(xv.includeI(home, l));
52 SetVarLubRanges u(sxv);
53 GECODE_ME_CHECK(xv.intersectI(home, u));
54 return ES_OK;
55 }
56
57}}
58
59namespace Gecode {
60
61 void
62 relax(Home home, const SetVarArgs& x, const SetVarArgs& sx,
63 Rnd r, double p) {
64 if (x.size() != sx.size())
65 throw Set::ArgumentSizeMismatch("Set::relax");
66 if ((p < 0.0) || (p > 1.0))
67 throw Set::OutOfLimits("Set::relax");
68 Set::Relax ir;
70 }
71
72}
73
74// STATISTICS: set-other
75
NNF * l
Left subtree.
union Gecode::@603::NNF::@65 u
Union depending on nodetype t.
int p
Number of positive literals for node type.
int size(void) const
Return size of array (number of elements)
Definition array.hpp:1607
Home class for posting propagators
Definition core.hpp:856
Exception: Arguments are of different size
Definition exception.hpp:73
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
Passing set variables.
Definition set.hh:488
Iterator for the greatest lower bound ranges of a set variable.
Definition set.hh:270
Iterator for the least upper bound ranges of a set variable.
Definition set.hh:302
Set variables
Definition set.hh:127
ExecStatus operator()(Home home, SetVar x, SetVar sx)
Post the actual equality for non-relaxed variables.
Definition relax.cpp:47
Set view for set variables
Definition view.hpp:56
ModEvent intersectI(Space &home, I &iter)
Intersect least upper bound with range sequence described by i.
Definition set.hpp:164
ModEvent includeI(Space &home, I &i)
Include range sequence described by i in greatest lower bound.
Definition set.hpp:151
#define GECODE_ME_CHECK(me)
Check whether modification event me is failed, and forward failure.
Definition macros.hpp:52
void relax(Home home, const VarArgs &x, const VarArgs &sx, Rnd r, double p, Post &post)
Relax variables in x from solution sx with probability p.
Definition relax.hh:51
Gecode toplevel namespace
Post propagator for SetVar SetOpType SetVar SetRelType r
Definition set.hh:767
GECODE_FLOAT_EXPORT void relax(Home home, const FloatVarArgs &x, const FloatVarArgs &sx, Rnd r, double p)
Definition relax.cpp:57
ExecStatus
Definition core.hpp:472
@ ES_OK
Execution is okay.
Definition core.hpp:476
Post propagator for SetVar x
Definition set.hh:767
#define forceinline
Definition config.hpp:187