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