lemon/base.cc
author Peter Kovacs <kpeter@inf.elte.hu>
Tue, 15 Mar 2011 19:32:21 +0100
changeset 936 ddd3c0d3d9bf
parent 440 88ed40ad0d4f
child 1054 c40a9d94442d
permissions -rw-r--r--
Implement the scaling Price Refinement heuristic in CostScaling (#417)
instead of Early Termination.

These two heuristics are similar, but the newer one is faster
and not only makes it possible to skip some epsilon phases, but
it can improve the performance of the other phases, as well.
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/* -*- mode: C++; indent-tabs-mode: nil; -*-
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 *
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 * This file is a part of LEMON, a generic C++ optimization library.
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 *
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 * Copyright (C) 2003-2009
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 * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport
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 * (Egervary Research Group on Combinatorial Optimization, EGRES).
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 *
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 * Permission to use, modify and distribute this software is granted
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 * provided that this copyright notice appears in all copies. For
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 * precise terms see the accompanying LICENSE file.
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 *
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 * This software is provided "AS IS" with no warranty of any kind,
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 * express or implied, and with no claim as to its suitability for any
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 * purpose.
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 *
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 */
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///\file
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///\brief Some basic non-inline functions and static global data.
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#include<lemon/tolerance.h>
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#include<lemon/core.h>
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namespace lemon {
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  float Tolerance<float>::def_epsilon = static_cast<float>(1e-4);
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  double Tolerance<double>::def_epsilon = 1e-10;
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  long double Tolerance<long double>::def_epsilon = 1e-14;
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#ifndef LEMON_ONLY_TEMPLATES
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  const Invalid INVALID = Invalid();
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#endif
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} //namespace lemon