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 28 function ToUInt32(x) { 29 return x >>> 0; 30 } 31 32 assertEquals(0, ToUInt32(0), "0"); 33 assertEquals(0, ToUInt32(-0), "-0"); 34 assertEquals(0, ToUInt32(Infinity), "Infinity"); 35 assertEquals(0, ToUInt32(-Infinity), "-Infinity"); 36 assertEquals(0, ToUInt32(NaN), "NaN"); 37 38 assertEquals(0, ToUInt32(Number.MIN_VALUE), "MIN"); 39 assertEquals(0, ToUInt32(-Number.MIN_VALUE), "-MIN"); 40 assertEquals(0, ToUInt32(0.1), "0.1"); 41 assertEquals(0, ToUInt32(-0.1), "-0.1"); 42 assertEquals(1, ToUInt32(1), "1"); 43 assertEquals(1, ToUInt32(1.1), "1.1"); 44 45 assertEquals(4294967295, ToUInt32(-1), "-1"); 46 assertEquals(4294967295, ToUInt32(-1.1), "-1.1"); 47 48 assertEquals(2147483647, ToUInt32(2147483647), "2147483647"); 49 assertEquals(2147483648, ToUInt32(2147483648), "2147483648"); 50 assertEquals(2147483649, ToUInt32(2147483649), "2147483649"); 51 52 assertEquals(4294967295, ToUInt32(4294967295), "4294967295"); 53 assertEquals(0, ToUInt32(4294967296), "4294967296"); 54 assertEquals(1, ToUInt32(4294967297), "4294967297"); 55 56 assertEquals(2147483649, ToUInt32(-2147483647), "-2147483647"); 57 assertEquals(2147483648, ToUInt32(-2147483648), "-2147483648"); 58 assertEquals(2147483647, ToUInt32(-2147483649), "-2147483649"); 59 60 assertEquals(1, ToUInt32(-4294967295), "-4294967295"); 61 assertEquals(0, ToUInt32(-4294967296), "-4294967296"); 62 assertEquals(4294967295, ToUInt32(-4294967297), "-4294967297"); 63 64 assertEquals(2147483647, ToUInt32('2147483647'), "'2147483647'"); 65 assertEquals(2147483648, ToUInt32('2147483648'), "'2147483648'"); 66 assertEquals(2147483649, ToUInt32('2147483649'), "'2147483649'"); 67 68 assertEquals(4294967295, ToUInt32('4294967295'), "'4294967295'"); 69 assertEquals(0, ToUInt32('4294967296'), "'4294967296'"); 70 assertEquals(1, ToUInt32('4294967297'), "'4294967297'"); 71 72 73
