relax.cpp
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/* -*- mode: C++; c-basic-offset: 2; indent-tabs-mode: nil -*- */
/*
* Main authors:
* Christian Schulte <schulte@gecode.org>
*
* Copyright:
* Christian Schulte, 2016
*
* This file is part of Gecode, the generic constraint
* development environment:
* http://www.gecode.org
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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#include <gecode/float.hh>
#include <gecode/search/relax.hh>
namespace Gecode { namespace Float {
class Relax {
public:
ExecStatus operator ()(Home home, FloatVar x, FloatVar sx);
};
forceinline ExecStatus
Relax::operator ()(Home home, FloatVar x, FloatVar sx) {
FloatView xv(x);
return me_failed(xv.eq(home,sx.val())) ? ES_FAILED : ES_OK;
}
}}
namespace Gecode {
void
relax(Home home, const FloatVarArgs& x, const FloatVarArgs& sx,
Rnd r, double p) {
if (x.size() != sx.size())
throw Float::ArgumentSizeMismatch("Float::relax");
if ((p < 0.0) || (p > 1.0))
throw Float::OutOfLimits("Float::relax");
Float::Relax fr;
Search::relax<FloatVarArgs,Float::Relax>(home,x,sx,r,p,fr);
}
}
// STATISTICS: float-other
Gecode::ArgArrayBase::size
int size(void) const
Return size of array (number of elements).
Definition array.hpp:1607
Gecode::FloatVarArgs
Passing float variables.
Definition float.hh:979
Gecode::FloatVar
Float variables.
Definition float.hh:870
Gecode::FloatVar::val
FloatVal val(void) const
Return assigned value.
Definition float.hpp:53
Gecode::Float::ArgumentSizeMismatch
Exception: Arguments are of different size
Definition exception.hpp:74
Gecode::Float::FloatView
Float view for float variables.
Definition view.hpp:52
Gecode::Float::FloatView::eq
ModEvent eq(Space &home, int n)
Restrict domain values to be equal to n.
Definition float.hpp:131
Gecode::Float::OutOfLimits
Exception: Value out of limits
Definition exception.hpp:46
Gecode::Float::Relax
Class for posting equalities for non-relaxed variables.
Definition relax.cpp:40
Gecode::Float::Relax::operator()
ExecStatus operator()(Home home, FloatVar x, FloatVar sx)
Post the actual equality for non-relaxed variables.
Definition relax.cpp:47
Gecode::Home
Home class for posting propagators
Definition core.hpp:856
Gecode::Rnd
Random number generator.
Definition rnd.hpp:42
float.hh
Gecode::me_failed
bool me_failed(ModEvent me)
Check whether modification event me is failed.
Definition modevent.hpp:54
Gecode::Float
Floating point numbers.
Gecode::Search::relax
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
Gecode toplevel namespace
Gecode::relax
GECODE_FLOAT_EXPORT void relax(Home home, const FloatVarArgs &x, const FloatVarArgs &sx, Rnd r, double p)
Definition relax.cpp:57
Gecode::ExecStatus
ExecStatus
Definition core.hpp:472
Gecode::ES_OK
@ ES_OK
Execution is okay.
Definition core.hpp:476
Gecode::ES_FAILED
@ ES_FAILED
Execution has resulted in failure.
Definition core.hpp:474
relax.hh
forceinline
#define forceinline
Definition config.hpp:187