Java tutorial
//package com.java2s; /* * Copyright (c) 2014 Qualcomm Technologies Inc * * All rights reserved. * * Redistribution and use in source and binary forms, with or without modification, are permitted * (subject to the limitations in the disclaimer below) 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 Qualcomm Technologies Inc nor the names of its contributors may be used to * endorse or promote products derived from this software without specific prior written permission. * * NO EXPRESS OR IMPLIED LICENSES TO ANY PARTY'S PATENT RIGHTS ARE GRANTED BY THIS LICENSE. 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 THE COPYRIGHT OWNER OR CONTRIBUTORS 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. */ public class Main { /** * Given two angles in degrees, determine the smallest angle between them. * * For example, given angles 90 and 170, the smallest angle difference would be 80 * and the larger angle difference would be 280. * * @param firstAngleDeg * @param secondAngleDeg * @return smallest angle */ public static double smallestAngularDifferenceDegrees(double firstAngleDeg, double secondAngleDeg) { double rawDiffDeg = firstAngleDeg - secondAngleDeg; double rawDiffRad = rawDiffDeg * Math.PI / 180; double wrappedDiffRad = Math.atan2(Math.sin(rawDiffRad), Math.cos(rawDiffRad)); double wrappedDiffDeg = wrappedDiffRad * 180 / Math.PI; return wrappedDiffDeg; } }