Last change
on this file since 13402 was
6152,
checked in by bfarka, 14 years ago
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added ecj and custom statistics to communicate with the okb services #1441
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File size:
1.3 KB
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1 | /*
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2 | Copyright 2006 by Sean Luke
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3 | Licensed under the Academic Free License version 3.0
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4 | See the file "LICENSE" for more information
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5 | */
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6 |
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7 |
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8 | package ec.app.tutorial4;
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9 | import ec.*;
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10 | import ec.gp.*;
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11 | import ec.util.*;
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12 |
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13 | public class Mul extends GPNode
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14 | {
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15 | public String toString() { return "*"; }
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16 |
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17 | public void checkConstraints(final EvolutionState state,
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18 | final int tree,
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19 | final GPIndividual typicalIndividual,
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20 | final Parameter individualBase)
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21 | {
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22 | super.checkConstraints(state,tree,typicalIndividual,individualBase);
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23 | if (children.length!=2)
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24 | state.output.error("Incorrect number of children for node " +
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25 | toStringForError() + " at " +
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26 | individualBase);
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27 | }
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28 | public void eval(final EvolutionState state,
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29 | final int thread,
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30 | final GPData input,
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31 | final ADFStack stack,
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32 | final GPIndividual individual,
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33 | final Problem problem)
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34 | {
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35 | double result;
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36 | DoubleData rd = ((DoubleData)(input));
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37 |
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38 | children[0].eval(state,thread,input,stack,individual,problem);
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39 | result = rd.x;
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40 |
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41 | children[1].eval(state,thread,input,stack,individual,problem);
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42 | rd.x = result * rd.x;
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43 | }
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44 | }
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45 |
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