| /** |
| * Copyright (c) 2004-2011 QOS.ch |
| * All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining |
| * a copy of this software and associated documentation files (the |
| * "Software"), to deal in the Software without restriction, including |
| * without limitation the rights to use, copy, modify, merge, publish, |
| * distribute, sublicense, and/or sell copies of the Software, and to |
| * permit persons to whom the Software is furnished to do so, subject to |
| * the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be |
| * included in all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
| * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
| * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE |
| * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION |
| * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION |
| * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
| * |
| */ |
| package org.slf4j.helpers; |
| |
| class MyRandom { |
| |
| private final static long m = 200000000041L; // a prime number |
| private final static long a = 2000000011L; // a prime number |
| |
| long y; |
| long unused; |
| int bits = 32; |
| |
| public MyRandom() { |
| this(System.nanoTime()); |
| } |
| |
| public MyRandom(long seed) { |
| this.y = seed; |
| } |
| |
| int nextInt() { |
| // we don't really care about the randomness of this |
| // generator |
| y = (a * y + 1) % m; |
| unused = y >>> (48 - bits); // just exercise the >>> operator |
| return (int) (y); |
| } |
| } |