src/experimental/org/apache/commons/math/analysis/derivative/AbstractDifferenceDerivative.java

/*
 * 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.math.analysis.derivative;

import org.apache.commons.math.analysis.UnivariateRealFunction;
import org.apache.commons.math.analysis.UnivariateRealFunctionProxy;

/**
 * @todo add javadoc comment
 * @version $Revision$ $Date$
 */
public abstract class AbstractDifferenceDerivative extends UnivariateRealFunctionProxy implements UnivariateRealFunction {
    /** */
    private double delta;
    
    /**
     * @todo add javadoc comment
     */
    public AbstractDifferenceDerivative(UnivariateRealFunction function, double h) {
        super(function);
        setDelta(h);
    }

    private void setDelta(double h) {
        this.delta = h;
    }

    protected double getDelta() {
        return delta;
    }
}