1 // Copyright 2010 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 assertEquals(0, Math.round(0)); 29 assertEquals(-0, Math.round(-0)); 30 assertEquals(Infinity, Math.round(Infinity)); 31 assertEquals(-Infinity, Math.round(-Infinity)); 32 assertNaN(Math.round(NaN)); 33 34 assertEquals(1, Math.round(0.5)); 35 assertEquals(1, Math.round(0.7)); 36 assertEquals(1, Math.round(1)); 37 assertEquals(1, Math.round(1.1)); 38 assertEquals(1, Math.round(1.49999)); 39 assertEquals(1/-0, 1/Math.round(-0.5)); // Test for -0 result. 40 assertEquals(-1, Math.round(-0.5000000000000001)); 41 assertEquals(-1, Math.round(-0.7)); 42 assertEquals(-1, Math.round(-1)); 43 assertEquals(-1, Math.round(-1.1)); 44 assertEquals(-1, Math.round(-1.49999)); 45 assertEquals(-1, Math.round(-1.5)); 46 47 assertEquals(9007199254740990, Math.round(9007199254740990)); 48 assertEquals(9007199254740991, Math.round(9007199254740991)); 49 assertEquals(-9007199254740990, Math.round(-9007199254740990)); 50 assertEquals(-9007199254740991, Math.round(-9007199254740991)); 51 assertEquals(Number.MAX_VALUE, Math.round(Number.MAX_VALUE)); 52 assertEquals(-Number.MAX_VALUE, Math.round(-Number.MAX_VALUE)); 53 54 assertEquals(536870911, Math.round(536870910.5)); 55 assertEquals(536870911, Math.round(536870911)); 56 assertEquals(536870911, Math.round(536870911.4)); 57 assertEquals(536870912, Math.round(536870911.5)); 58 assertEquals(536870912, Math.round(536870912)); 59 assertEquals(536870912, Math.round(536870912.4)); 60 assertEquals(536870913, Math.round(536870912.5)); 61 assertEquals(536870913, Math.round(536870913)); 62 assertEquals(536870913, Math.round(536870913.4)); 63 assertEquals(1073741823, Math.round(1073741822.5)); 64 assertEquals(1073741823, Math.round(1073741823)); 65 assertEquals(1073741823, Math.round(1073741823.4)); 66 assertEquals(1073741824, Math.round(1073741823.5)); 67 assertEquals(1073741824, Math.round(1073741824)); 68 assertEquals(1073741824, Math.round(1073741824.4)); 69 assertEquals(1073741825, Math.round(1073741824.5)); 70 assertEquals(2147483647, Math.round(2147483646.5)); 71 assertEquals(2147483647, Math.round(2147483647)); 72 assertEquals(2147483647, Math.round(2147483647.4)); 73 assertEquals(2147483648, Math.round(2147483647.5)); 74 assertEquals(2147483648, Math.round(2147483648)); 75 assertEquals(2147483648, Math.round(2147483648.4)); 76 assertEquals(2147483649, Math.round(2147483648.5)); 77 78 // Tests based on WebKit LayoutTests 79 80 assertEquals(0, Math.round(0.4)); 81 assertEquals(-0, Math.round(-0.4)); 82 assertEquals(-0, Math.round(-0.5)); 83 assertEquals(1, Math.round(0.6)); 84 assertEquals(-1, Math.round(-0.6)); 85 assertEquals(2, Math.round(1.5)); 86 assertEquals(2, Math.round(1.6)); 87 assertEquals(-2, Math.round(-1.6)); 88 assertEquals(8640000000000000, Math.round(8640000000000000)); 89 assertEquals(8640000000000001, Math.round(8640000000000001)); 90 assertEquals(8640000000000002, Math.round(8640000000000002)); 91 assertEquals(9007199254740990, Math.round(9007199254740990)); 92 assertEquals(9007199254740991, Math.round(9007199254740991)); 93 assertEquals(1.7976931348623157e+308, Math.round(1.7976931348623157e+308)); 94 assertEquals(-8640000000000000, Math.round(-8640000000000000)); 95 assertEquals(-8640000000000001, Math.round(-8640000000000001)); 96 assertEquals(-8640000000000002, Math.round(-8640000000000002)); 97 assertEquals(-9007199254740990, Math.round(-9007199254740990)); 98 assertEquals(-9007199254740991, Math.round(-9007199254740991)); 99 assertEquals(-1.7976931348623157e+308, Math.round(-1.7976931348623157e+308)); 100 assertEquals(Infinity, Math.round(Infinity)); 101 assertEquals(-Infinity, Math.round(-Infinity)); 102
