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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
8 *
9 * This file is part of Gecode, the generic constraint
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33
34#include <gecode/float.hh>
36
37namespace Gecode { namespace Float {
38
40 class Relax {
41 public:
44 };
45
48 FloatView xv(x);
49 return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
50 }
51
52}}
53
54namespace Gecode {
55
56 void
57 relax(Home home, const FloatVarArgs& x, const FloatVarArgs& sx,
58 Rnd r, double p) {
59 if (x.size() != sx.size())
60 throw Float::ArgumentSizeMismatch("Float::relax");
61 if ((p < 0.0) || (p > 1.0))
62 throw Float::OutOfLimits("Float::relax");
63 Float::Relax fr;
65 }
66
67}
68
69// STATISTICS: float-other
70
int size(void) const
Return size of array (number of elements)
Definition array.hpp:1613
Passing float variables.
Definition float.hh:982
Float variables.
Definition float.hh:870
FloatVal val(void) const
Return assigned value.
Definition float.hpp:53
Exception: Arguments are of different size
Definition exception.hpp:74
Float view for float variables.
Definition view.hpp:52
ModEvent eq(Space &home, int n)
Restrict domain values to be equal to n.
Definition float.hpp:131
Exception: Value out of limits
Definition exception.hpp:46
Class for posting equalities for non-relaxed variables.
Definition relax.cpp:40
ExecStatus operator()(Home home, FloatVar x, FloatVar sx)
Post the actual equality for non-relaxed variables.
Definition relax.cpp:47
Home class for posting propagators
Definition core.hpp:856
Random number generator.
Definition rnd.hpp:42
bool me_failed(ModEvent me)
Check whether modification event me is failed.
Definition modevent.hpp:54
Floating point numbers.
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:773
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
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
Post propagator for SetVar x
Definition set.hh:773
#define forceinline
Definition config.hpp:194