1 // Copyright 2012 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 // Flags: --allow-natives-syntax 29 30 function RunOneTruncationTest(a, b) { 31 var temp = a | 0; 32 assertEquals(b, temp); 33 } 34 35 function RunAllTruncationTests() { 36 RunOneTruncationTest(0, 0); 37 RunOneTruncationTest(0.5, 0); 38 RunOneTruncationTest(-0.5, 0); 39 RunOneTruncationTest(1.5, 1); 40 RunOneTruncationTest(-1.5, -1); 41 RunOneTruncationTest(5.5, 5); 42 RunOneTruncationTest(-5.0, -5); 43 RunOneTruncationTest(NaN, 0); 44 RunOneTruncationTest(Infinity, 0); 45 RunOneTruncationTest(-NaN, 0); 46 RunOneTruncationTest(-Infinity, 0); 47 48 RunOneTruncationTest(4.5036e+15, 0x1635E000); 49 RunOneTruncationTest(-4.5036e+15, -372629504); 50 51 RunOneTruncationTest(4503603922337791.0, -1); 52 RunOneTruncationTest(-4503603922337791.0, 1); 53 RunOneTruncationTest(4503601774854143.0, 2147483647); 54 RunOneTruncationTest(-4503601774854143.0, -2147483647); 55 RunOneTruncationTest(9007207844675582.0, -2); 56 RunOneTruncationTest(-9007207844675582.0, 2); 57 58 RunOneTruncationTest(2.4178527921507624e+24, -536870912); 59 RunOneTruncationTest(-2.4178527921507624e+24, 536870912); 60 RunOneTruncationTest(2.417853945072267e+24, -536870912); 61 RunOneTruncationTest(-2.417853945072267e+24, 536870912); 62 63 RunOneTruncationTest(4.8357055843015248e+24, -1073741824); 64 RunOneTruncationTest(-4.8357055843015248e+24, 1073741824); 65 RunOneTruncationTest(4.8357078901445341e+24, -1073741824); 66 RunOneTruncationTest(-4.8357078901445341e+24, 1073741824); 67 68 RunOneTruncationTest(9.6714111686030497e+24, -2147483648); 69 RunOneTruncationTest(-9.6714111686030497e+24, -2147483648); 70 RunOneTruncationTest(9.6714157802890681e+24, -2147483648); 71 RunOneTruncationTest(-9.6714157802890681e+24, -2147483648); 72 } 73 74 RunAllTruncationTests(); 75 RunAllTruncationTests(); 76 %OptimizeFunctionOnNextCall(RunOneTruncationTest); 77 RunAllTruncationTests(); 78 RunAllTruncationTests(); 79
