Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 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 | |
| 29 | var flags; |
| 30 | |
| 31 | function resetFlags(size) { |
| 32 | flags = Array(size); |
| 33 | while (size--) flags[size] = 0; |
| 34 | } |
| 35 | |
| 36 | function assertFlags(array) { |
| 37 | assertArrayEquals(array, flags); |
| 38 | } |
| 39 | |
| 40 | function object_factory(flag_index, value, expected_flags) { |
| 41 | var obj = {}; |
| 42 | obj.valueOf = function() { |
| 43 | assertFlags(expected_flags); |
| 44 | flags[flag_index]++; |
| 45 | return value; |
| 46 | } |
| 47 | return obj; |
| 48 | } |
| 49 | |
| 50 | |
| 51 | assertEquals(-Infinity, Math.max()); |
| 52 | |
| 53 | resetFlags(1); |
| 54 | assertEquals(NaN, |
| 55 | Math.max(object_factory(0, NaN, [0]))); |
| 56 | assertFlags([1]); |
| 57 | |
| 58 | resetFlags(2); |
| 59 | assertEquals(NaN, |
| 60 | Math.max(object_factory(0, NaN, [0, 0]), |
| 61 | object_factory(1, 0, [1, 0]))); |
| 62 | assertFlags([1, 1]); |
| 63 | |
| 64 | resetFlags(3); |
| 65 | assertEquals(NaN, |
| 66 | Math.max(object_factory(0, NaN, [0, 0, 0]), |
| 67 | object_factory(1, 0, [1, 0, 0]), |
| 68 | object_factory(2, 1, [1, 1, 0]))); |
| 69 | assertFlags([1, 1, 1]); |
| 70 | |
| 71 | resetFlags(3); |
| 72 | assertEquals(NaN, |
| 73 | Math.max(object_factory(0, 2, [0, 0, 0]), |
| 74 | object_factory(1, 0, [1, 0, 0]), |
| 75 | object_factory(2, NaN, [1, 1, 0]))); |
| 76 | assertFlags([1, 1, 1]); |
| 77 | |
| 78 | resetFlags(3); |
| 79 | assertEquals(2, |
| 80 | Math.max(object_factory(0, 2, [0, 0, 0]), |
| 81 | object_factory(1, 0, [1, 0, 0]), |
| 82 | object_factory(2, 1, [1, 1, 0]))); |
| 83 | assertFlags([1, 1, 1]); |
| 84 | |
| 85 | |
| 86 | assertEquals(+Infinity, Math.min()); |
| 87 | |
| 88 | resetFlags(1); |
| 89 | assertEquals(NaN, |
| 90 | Math.min(object_factory(0, NaN, [0]))); |
| 91 | assertFlags([1]); |
| 92 | |
| 93 | resetFlags(2); |
| 94 | assertEquals(NaN, |
| 95 | Math.min(object_factory(0, NaN, [0, 0]), |
| 96 | object_factory(1, 0, [1, 0]))); |
| 97 | assertFlags([1, 1]); |
| 98 | |
| 99 | resetFlags(3); |
| 100 | assertEquals(NaN, |
| 101 | Math.min(object_factory(0, NaN, [0, 0, 0]), |
| 102 | object_factory(1, 0, [1, 0, 0]), |
| 103 | object_factory(2, 1, [1, 1, 0]))); |
| 104 | assertFlags([1, 1, 1]); |
| 105 | |
| 106 | resetFlags(3); |
| 107 | assertEquals(NaN, |
| 108 | Math.min(object_factory(0, 2, [0, 0, 0]), |
| 109 | object_factory(1, 0, [1, 0, 0]), |
| 110 | object_factory(2, NaN, [1, 1, 0]))); |
| 111 | assertFlags([1, 1, 1]); |
| 112 | |
| 113 | resetFlags(3); |
| 114 | assertEquals(0, |
| 115 | Math.min(object_factory(0, 2, [0, 0, 0]), |
| 116 | object_factory(1, 0, [1, 0, 0]), |
| 117 | object_factory(2, 1, [1, 1, 0]))); |
| 118 | assertFlags([1, 1, 1]); |