| //////////////////////////////////////////////////////////////////////////////// |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to You under the Apache License, Version 2.0 |
| // (the "License"); you may not use this file except in compliance with |
| // the License. You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| package UnitTest.Validation { |
| |
| import flash.utils.Endian; |
| |
| /** |
| * Contains reusable methods for operations pertaining |
| * to int values. |
| */ |
| public class IntUtil { |
| |
| /** |
| * Rotates x left n bits |
| * |
| * @langversion ActionScript 3.0 |
| * @playerversion Flash 9.0 |
| * @tiptext |
| */ |
| public static function rol ( x:int, n:int ):int { |
| return ( x << n ) | ( x >>> ( 32 - n ) ); |
| } |
| |
| /** |
| * Rotates x right n bits |
| * |
| * @langversion ActionScript 3.0 |
| * @playerversion Flash 9.0 |
| * @tiptext |
| */ |
| public static function ror ( x:int, n:int ):uint { |
| var nn:int = 32 - n; |
| return ( x << nn ) | ( x >>> ( 32 - nn ) ); |
| } |
| |
| /** String for quick lookup of a hex character based on index */ |
| private static var hexChars:String = "0123456789abcdef"; |
| |
| /** |
| * Outputs the hex value of a int, allowing the developer to specify |
| * the endinaness in the process. Hex output is lowercase. |
| * |
| * @param n The int value to output as hex |
| * @param bigEndian Flag to output the int as big or little endian |
| * @return A string of length 8 corresponding to the |
| * hex representation of n ( minus the leading "0x" ) |
| * @langversion ActionScript 3.0 |
| * @playerversion Flash 9.0 |
| * @tiptext |
| */ |
| public static function toHex( n:int, bigEndian:Boolean = false ):String { |
| var s:String = ""; |
| |
| if ( bigEndian ) { |
| for ( var i:int = 0; i < 4; i++ ) { |
| s += hexChars.charAt( ( n >> ( ( 3 - i ) * 8 + 4 ) ) & 0xF ) |
| + hexChars.charAt( ( n >> ( ( 3 - i ) * 8 ) ) & 0xF ); |
| } |
| } else { |
| for ( var x:int = 0; x < 4; x++ ) { |
| s += hexChars.charAt( ( n >> ( x * 8 + 4 ) ) & 0xF ) |
| + hexChars.charAt( ( n >> ( x * 8 ) ) & 0xF ); |
| } |
| } |
| |
| return s; |
| } |
| } |
| |
| } |