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Genetic Programming in Java, including packages on Linear Genetic Programming

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package com.github.chen0040.gp.lgp.program.operators;


import com.github.chen0040.gp.commons.Observation;
import com.github.chen0040.gp.lgp.enums.OperatorExecutionStatus;
import com.github.chen0040.gp.lgp.program.Register;
import com.github.chen0040.gp.lgp.program.Operator;


/**
 * Created by xschen on 30/4/2017.
 */
public class Cosine extends Operator {
   private static final long serialVersionUID = 5517973850770106547L;


   public Cosine() {
      super("cos");
   }


   @Override public Operator makeCopy() {
      Cosine clone = new Cosine();
      clone.copy(this);
      return clone;
   }


   @Override public OperatorExecutionStatus execute(Register operand1, Register operand2, Register destination_register, Observation observation) {
      double x = operand1.getValue();
      destination_register.setValue(Math.cos(x));
      return OperatorExecutionStatus.LGP_EXECUTE_NEXT_INSTRUCTION;
   }
}