Benchmark.java

/*
 * Encog(tm) Java Examples v3.4
 * http://www.heatonresearch.com/encog/
 * https://github.com/encog/encog-java-examples
 *
 * Copyright 2008-2016 Heaton Research, Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *   
 * For more information on Heaton Research copyrights, licenses 
 * and trademarks visit:
 * http://www.heatonresearch.com/copyright
 */
package org.encog.examples.ml.prg;

import org.encog.ml.prg.EncogProgram;
import org.encog.util.Stopwatch;

public class Benchmark {
	public static final int MILLION = 1000000;
	public static final int COUNT = 10 * MILLION;
	
	public static void testDirect() {
		Stopwatch sw = new Stopwatch();
		sw.start();
		double d = 0;
		
		for(double a = 0;a<COUNT;a++) {
			d+=(Math.pow(a+25,3)/25)-(Math.pow((a*3),4)/250);
		}
		sw.stop();
		
		System.out.println("Time Direct: " + sw.getElapsedMilliseconds());
	}
	
	public static void testEPL() {
		EncogProgram expression = new EncogProgram("((a+25)^3/25)-((a*3)^4/250)");

		Stopwatch sw = new Stopwatch();
		sw.start();
		for(double a = 0;a<COUNT;a++) {
			expression.getVariables().setVariable("a",a);
			expression.evaluate();
		}
		sw.stop();
		
		System.out.println("Time EPL: " + sw.getElapsedMilliseconds());
	}
	
	public static void main(String[] args) {
		testDirect();
		testEPL();
	}
}