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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You 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.commons.math3.util;
import java.util.EventListener;
/** The listener interface for receiving events occurring in an iterative algorithm. */
public interface IterationListener extends EventListener {
/**
* Invoked after completion of the initial phase of the iterative algorithm (prior to the main
* iteration loop).
*
* @param e The {@link IterationEvent} object.
*/
void initializationPerformed(IterationEvent e);
/**
* Invoked each time an iteration is completed (in the main iteration loop).
*
* @param e The {@link IterationEvent} object.
*/
void iterationPerformed(IterationEvent e);
/**
* Invoked each time a new iteration is completed (in the main iteration loop).
*
* @param e The {@link IterationEvent} object.
*/
void iterationStarted(IterationEvent e);
/**
* Invoked after completion of the operations which occur after breaking out of the main
* iteration loop.
*
* @param e The {@link IterationEvent} object.
*/
void terminationPerformed(IterationEvent e);
}
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