Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 1 | // Copyright 2013 the V8 project authors. All rights reserved. |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 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 | |
Ben Murdoch | b8a8cc1 | 2014-11-26 15:28:44 +0000 | [diff] [blame] | 28 | assertEquals("Infinity", String(1/Math.sign(0))); |
| 29 | assertEquals("-Infinity", String(1/Math.sign(-0))); |
| 30 | assertEquals(1, Math.sign(100)); |
| 31 | assertEquals(-1, Math.sign(-199)); |
| 32 | assertEquals(1, Math.sign(100.1)); |
| 33 | assertTrue(isNaN(Math.sign("abc"))); |
| 34 | assertTrue(isNaN(Math.sign({}))); |
| 35 | assertEquals(0, Math.sign([])); |
| 36 | assertEquals(1, Math.sign([1])); |
| 37 | assertEquals(-1, Math.sign([-100.1])); |
| 38 | assertTrue(isNaN(Math.sign([1, 1]))); |
| 39 | assertEquals(1, Math.sign({ toString: function() { return "100"; } })); |
| 40 | assertEquals(1, Math.sign({ toString: function() { return 100; } })); |
| 41 | assertEquals(-1, Math.sign({ valueOf: function() { return -1.1; } })); |
| 42 | assertEquals(-1, Math.sign({ valueOf: function() { return "-1.1"; } })); |
| 43 | assertEquals(-1, Math.sign(-Infinity)); |
| 44 | assertEquals(1, Math.sign(Infinity)); |
| 45 | assertEquals(-1, Math.sign("-Infinity")); |
| 46 | assertEquals(1, Math.sign("Infinity")); |