Computes the percent difference between two non-negative numbers. - Java java.lang

Java examples for java.lang:Math Calculation

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Description

Computes the percent difference between two non-negative numbers.

Demo Code

/*/*from  w w  w  .j  a  v a  2  s.c  o m*/
 * Copyright (c) 2013, Creeaaakk Ware
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of Creeaaakk Ware nor the
 *       names of its contributors may be used to endorse or promote products
 *       derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL <COPYRIGHT HOLDER> BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
//package com.java2s;

public class Main {
    /**
     * Computes the percent difference between two non-negative numbers.
     */
    public static int percentDifference(int a, int b) {
        if (a < 0 || b < 0)
            throw new IllegalArgumentException();
        if (a + b == 0)
            return 0;
        return java.lang.Math.abs(200 * (a - b) / (a + b));
    }

    /**
     * Computes the percent difference between two non-negative numbers.
     */
    public static long percentDifference(long a, long b) {
        if (a < 0 || b < 0)
            throw new IllegalArgumentException();
        if (a + b == 0)
            return 0;
        return java.lang.Math.abs(200 * (a - b) / (a + b));
    }

    /**
     * Computes the percent difference between two non-negative numbers.
     */
    public static float percentDifference(float a, float b) {
        if (a < 0 || b < 0)
            throw new IllegalArgumentException();
        if (a + b == 0)
            return 0;
        return java.lang.Math.abs(200 * (a - b) / (a + b));
    }

    /**
     * Computes the percent difference between two non-negative numbers.
     */
    public static double percentDifference(double a, double b) {
        if (a < 0 || b < 0)
            throw new IllegalArgumentException();
        if (a + b == 0)
            return 0;
        return java.lang.Math.abs(200 * (a - b) / (a + b));
    }
}

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