src/experimental/org/apache/commons/math/function/simple/Sqrt.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.function.simple;

import java.io.Serializable;

import org.apache.commons.math.function.Evaluation;
import org.apache.commons.math.function.EvaluationContext;
import org.apache.commons.math.function.EvaluationException;


/**


 */
public class Sqrt implements Evaluation, Serializable {

    private Evaluation argument;

    public void setOperand(Evaluation argument) {
        this.argument = argument;
    }

    /* (non-Javadoc)
     * @see org.apache.archimedes.NumericFunction#evaluate(org.apache.archimedes.EvaluationContext)
     */
    public Evaluation evaluate(EvaluationContext context) throws EvaluationException {
        return context.evaluate(
            Math.sqrt(context.doubleValue(argument)));

    }

    public String toString() {
        return "Square Root";
    }

}