24 lines
681 B
C++
24 lines
681 B
C++
// "TwoOptIncrEval.cpp"
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// (c) OPAC Team, LIFL, January 2006
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/*
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Contact: paradiseo-help@lists.gforge.inria.fr
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*/
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#include "two_opt_incr_eval.h"
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#include "node.h"
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int TwoOptIncrEval :: operator () (const TwoOpt & __move, const Route & __route) {
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/* From */
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Node v1 = __route [__move.first], v1_left = __route [(__move.first - 1 + numNodes) % numNodes];
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/* To */
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Node v2 = __route [__move.second], v2_right = __route [(__move.second + 1) % numNodes];
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if (v1 == v2 || v2_right == v1)
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return __route.fitness ();
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else
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return __route.fitness () - distance (v1_left, v2) - distance (v1, v2_right) + distance (v1_left, v1) + distance (v2, v2_right);
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}
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