36 lines
1.4 KiB
C++
Executable file
36 lines
1.4 KiB
C++
Executable file
// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-
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// "TwoOptIncrEval.cpp"
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// (c) OPAC Team, LIFL, 2003
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/* This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Contact: cahon@lifl.fr
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*/
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#include "two_opt_incr_eval.h"
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#include "graph.h"
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float TwoOptIncrEval :: operator () (const TwoOpt & __move, const Route & __route) {
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// From
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unsigned v1 = __route [__move.first], v1_next = __route [__move.first + 1] ;
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// To
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unsigned v2 = __route [__move.second], v2_next = __route [__move.second + 1] ;
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return __route.fitness () - Graph :: distance (v1, v2) - Graph :: distance (v1_next, v2_next) + Graph :: distance (v1, v1_next) + Graph :: distance (v2, v2_next) ;
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}
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