| Ben Murdoch | 61f157c | 2016-09-16 13:49:30 +0100 | [diff] [blame] | 1 | // Copyright 2014 the V8 project authors. All rights reserved. |
| 2 | // Use of this source code is governed by a BSD-style license that can be |
| 3 | // found in the LICENSE file. |
| 4 | |
| 5 | Array.prototype.getStaggeredFromMiddle = function(i) { |
| 6 | if (i >= this.length) { |
| 7 | throw("getStaggeredFromMiddle: OOB"); |
| 8 | } |
| 9 | var middle = Math.floor(this.length / 2); |
| 10 | var index = middle + (((i % 2) == 0) ? (i / 2) : (((1 - i) / 2) - 1)); |
| 11 | return this[index]; |
| 12 | } |
| 13 | |
| 14 | Array.prototype.contains = function(obj) { |
| 15 | var i = this.length; |
| 16 | while (i--) { |
| 17 | if (this[i] === obj) { |
| 18 | return true; |
| 19 | } |
| 20 | } |
| 21 | return false; |
| 22 | } |
| 23 | |
| 24 | Math.alignUp = function(raw, multiple) { |
| 25 | return Math.floor((raw + multiple - 1) / multiple) * multiple; |
| 26 | } |