1 /* 2 * Copyright (C) 2011 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.android.dex.util; 18 19 /** 20 * Unsigned arithmetic over Java's signed types. 21 */ 22 public final class Unsigned { 23 private Unsigned() {} 24 25 public static int compare(short ushortA, short ushortB) { 26 if (ushortA == ushortB) { 27 return 0; 28 } 29 int a = ushortA & 0xFFFF; 30 int b = ushortB & 0xFFFF; 31 return a < b ? -1 : 1; 32 } 33 34 public static int compare(int uintA, int uintB) { 35 if (uintA == uintB) { 36 return 0; 37 } 38 long a = uintA & 0xFFFFFFFFL; 39 long b = uintB & 0xFFFFFFFFL; 40 return a < b ? -1 : 1; 41 } 42 } 43
