Coverage Report
File MathUtils.java
Coverage histogram
0% of files have more coverage
Classes
| Class | Line # | Actions | |||
|---|---|---|---|---|---|
| MathUtils | 23 | 8 | 3 |
Contributing tests
Source view
| 1 | /* | |
| 2 | * Jalview - A Sequence Alignment Editor and Viewer ($$Version-Rel$$) | |
| 3 | * Copyright (C) $$Year-Rel$$ The Jalview Authors | |
| 4 | * | |
| 5 | * This file is part of Jalview. | |
| 6 | * | |
| 7 | * Jalview is free software: you can redistribute it and/or | |
| 8 | * modify it under the terms of the GNU General Public License | |
| 9 | * as published by the Free Software Foundation, either version 3 | |
| 10 | * of the License, or (at your option) any later version. | |
| 11 | * | |
| 12 | * Jalview is distributed in the hope that it will be useful, but | |
| 13 | * WITHOUT ANY WARRANTY; without even the implied warranty | |
| 14 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
| 15 | * PURPOSE. See the GNU General Public License for more details. | |
| 16 | * | |
| 17 | * You should have received a copy of the GNU General Public License | |
| 18 | * along with Jalview. If not, see <http://www.gnu.org/licenses/>. | |
| 19 | * The Jalview Authors are detailed in the 'AUTHORS' file. | |
| 20 | */ | |
| 21 | package jalview.util; | |
| 22 | ||
| 23 | public class MathUtils | |
| 24 | { | |
| 25 | ||
| 26 | /** | |
| 27 | * Returns the greatest common divisor of two integers | |
| 28 | * | |
| 29 | * @param a | |
| 30 | * @param b | |
| 31 | * @return | |
| 32 | */ | |
| 33 | 0 |  public static int gcd(int a, int b) |
| 34 | { | |
| 35 | 0 | if (b == 0) |
| 36 | { | |
| 37 | 0 | return Math.abs(a); |
| 38 | } | |
| 39 | 0 | return gcd(b, a % b); |
| 40 | } | |
| 41 | ||
| 42 | ||
| 43 | private static int uidCounter = (int)(Math.random() * 0xffffffff); | |
| 44 | /** | |
| 45 | * Generates a unique 64-bit identifier. | |
| 46 | */ | |
| 47 | 0 | public static long getUID() |
| 48 | { | |
| 49 | 0 | long uid = 0L; |
| 50 | 0 | uid |= ((System.currentTimeMillis() >> 10) & 0xfffffffL) << 36; |
| 51 | 0 | uid |= (long)(Math.random() * 0xfL) << 32; |
| 52 | 0 | uid |= ++uidCounter & 0xffffffff; |
| 53 | 0 | return uid; |
| 54 | } | |
| 55 | } |