// $Header: /home/cvs/jakarta-jmeter/src/components/org/apache/jmeter/timers/GaussianRandomTimer.java,v 1.4 2004/02/13 01:39:06 sebb Exp $
/*
 * Copyright 2001-2004 The Apache Software Foundation.
 *
 * 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.
 * 
*/

package org.apache.jmeter.timers;

import java.io.Serializable;

import org.apache.jmeter.util.JMeterUtils;

/**
 * This class implements those methods needed by RandomTimer
 * to be instantiable and implements a random delay with
 * an average value and a gaussian distributed variation.
 *
 * @author Stefano Mazzocchi
 * @author Scott Eade
 * @version $Id: GaussianRandomTimer.java,v 1.4 2004/02/13 01:39:06 sebb Exp $
 */
public class GaussianRandomTimer extends RandomTimer implements Serializable
{
    public long delay()
    {
        return (long) Math.abs(
            (this.random.nextGaussian() * getRange()) + super.delay());
    }

    public String toString()
    {
        return JMeterUtils.getResString("gaussian_timer_memo");
    }
}