1// Copyright 2013 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 28assertEquals("Infinity", String(1/Math.sign(0))); 29assertEquals("-Infinity", String(1/Math.sign(-0))); 30assertEquals(1, Math.sign(100)); 31assertEquals(-1, Math.sign(-199)); 32assertEquals(1, Math.sign(100.1)); 33assertTrue(isNaN(Math.sign("abc"))); 34assertTrue(isNaN(Math.sign({}))); 35assertEquals(0, Math.sign([])); 36assertEquals(1, Math.sign([1])); 37assertEquals(-1, Math.sign([-100.1])); 38assertTrue(isNaN(Math.sign([1, 1]))); 39assertEquals(1, Math.sign({ toString: function() { return "100"; } })); 40assertEquals(1, Math.sign({ toString: function() { return 100; } })); 41assertEquals(-1, Math.sign({ valueOf: function() { return -1.1; } })); 42assertEquals(-1, Math.sign({ valueOf: function() { return "-1.1"; } })); 43assertEquals(-1, Math.sign(-Infinity)); 44assertEquals(1, Math.sign(Infinity)); 45assertEquals(-1, Math.sign("-Infinity")); 46assertEquals(1, Math.sign("Infinity")); 47