Main.java Source code

Introduction

Here is the source code for Main.java

Source

import java.math.BigDecimal;

/* 
 * 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.
 *
 *
 */
public class Main {
    /**
     * Returns the <a href="http://mathworld.wolfram.com/Sign.html"> sign</a>
     * for double precision <code>x</code>.
     * <p>
     * For a double value <code>x</code>, this method returns
     * <code>+1.0</code> if <code>x > 0</code>, <code>0.0</code> if
     * <code>x = 0.0</code>, and <code>-1.0</code> if <code>x < 0</code>.
     * Returns <code>NaN</code> if <code>x</code> is <code>NaN</code>.</p>
     * 
     * @param x the value, a double
     * @return +1.0, 0.0, or -1.0, depending on the sign of x
     */
    public static double sign(final double x) {
        if (Double.isNaN(x)) {
            return Double.NaN;
        }
        return (x == 0.0) ? 0.0 : (x > 0.0) ? 1.0 : -1.0;
    }
}