1// Copyright 2008 the V8 project authors. All rights reserved. 2// Redistribution and use in source and binary forms, with or without 3// modification, are permitted provided that the following conditions are 4// met: 5// 6// * Redistributions of source code must retain the above copyright 7// notice, this list of conditions and the following disclaimer. 8// * Redistributions in binary form must reproduce the above 9// copyright notice, this list of conditions and the following 10// disclaimer in the documentation and/or other materials provided 11// with the distribution. 12// * Neither the name of Google Inc. nor the names of its 13// contributors may be used to endorse or promote products derived 14// from this software without specific prior written permission. 15// 16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 28function ToUInt32(x) { 29 return x >>> 0; 30} 31 32assertEquals(0, ToUInt32(0), "0"); 33assertEquals(0, ToUInt32(-0), "-0"); 34assertEquals(0, ToUInt32(Infinity), "Infinity"); 35assertEquals(0, ToUInt32(-Infinity), "-Infinity"); 36assertEquals(0, ToUInt32(NaN), "NaN"); 37 38assertEquals(0, ToUInt32(Number.MIN_VALUE), "MIN"); 39assertEquals(0, ToUInt32(-Number.MIN_VALUE), "-MIN"); 40assertEquals(0, ToUInt32(0.1), "0.1"); 41assertEquals(0, ToUInt32(-0.1), "-0.1"); 42assertEquals(1, ToUInt32(1), "1"); 43assertEquals(1, ToUInt32(1.1), "1.1"); 44 45assertEquals(4294967295, ToUInt32(-1), "-1"); 46assertEquals(4294967295, ToUInt32(-1.1), "-1.1"); 47 48assertEquals(2147483647, ToUInt32(2147483647), "2147483647"); 49assertEquals(2147483648, ToUInt32(2147483648), "2147483648"); 50assertEquals(2147483649, ToUInt32(2147483649), "2147483649"); 51 52assertEquals(4294967295, ToUInt32(4294967295), "4294967295"); 53assertEquals(0, ToUInt32(4294967296), "4294967296"); 54assertEquals(1, ToUInt32(4294967297), "4294967297"); 55 56assertEquals(2147483649, ToUInt32(-2147483647), "-2147483647"); 57assertEquals(2147483648, ToUInt32(-2147483648), "-2147483648"); 58assertEquals(2147483647, ToUInt32(-2147483649), "-2147483649"); 59 60assertEquals(1, ToUInt32(-4294967295), "-4294967295"); 61assertEquals(0, ToUInt32(-4294967296), "-4294967296"); 62assertEquals(4294967295, ToUInt32(-4294967297), "-4294967297"); 63 64assertEquals(2147483647, ToUInt32('2147483647'), "'2147483647'"); 65assertEquals(2147483648, ToUInt32('2147483648'), "'2147483648'"); 66assertEquals(2147483649, ToUInt32('2147483649'), "'2147483649'"); 67 68assertEquals(4294967295, ToUInt32('4294967295'), "'4294967295'"); 69assertEquals(0, ToUInt32('4294967296'), "'4294967296'"); 70assertEquals(1, ToUInt32('4294967297'), "'4294967297'"); 71 72 73