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| 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 // See: http://code.google.com/p/v8/issues/detail?id=1278 |
| 29 |
| 30 // Test that that handling of 0/-0 is correct for binary operations when the |
| 31 // TypeRecordingBinaryOpStub transitions through different states. |
| 32 |
| 33 function add(x, y) { |
| 34 return x + y; |
| 35 } |
| 36 |
| 37 function sub(x, y) { |
| 38 return x - y; |
| 39 } |
| 40 |
| 41 function mul(x, y) { |
| 42 return x * y; |
| 43 } |
| 44 |
| 45 function div(x, y) { |
| 46 return x / y; |
| 47 } |
| 48 |
| 49 for (var i = 0; i < 10; i++) { |
| 50 assertEquals(0, add(0, 0)); |
| 51 assertEquals(0, add(0, -0)); |
| 52 assertEquals(0, add(-0, 0)); |
| 53 assertEquals(-0, add(-0, -0)); |
| 54 |
| 55 assertEquals(0, sub(0, 0)); |
| 56 assertEquals(0, sub(0, -0)); |
| 57 assertEquals(-0, sub(-0, 0)); |
| 58 assertEquals(0, sub(-0, -0)); |
| 59 |
| 60 assertEquals(0, mul(0, 0)); |
| 61 assertEquals(-0, mul(0, -0)); |
| 62 assertEquals(-0, mul(-0, 0)); |
| 63 assertEquals(0, mul(-0, -0)); |
| 64 |
| 65 assertEquals(0, div(0, 1)); |
| 66 assertEquals(-0, div(0, -1)); |
| 67 assertEquals(-0, div(-0, 1)); |
| 68 assertEquals(0, div(-0, -1)); |
| 69 } |
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