mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
27 lines
702 B
27 lines
702 B
8 years ago
|
// Copyright 2014 the V8 project authors. All rights reserved.
|
||
|
|
// Use of this source code is governed by a BSD-style license that can be
|
||
|
|
// found in the LICENSE file.
|
||
|
|
|
||
|
|
Array.prototype.getStaggeredFromMiddle = function(i) {
|
||
|
|
if (i >= this.length) {
|
||
|
|
throw("getStaggeredFromMiddle: OOB");
|
||
|
|
}
|
||
|
|
var middle = Math.floor(this.length / 2);
|
||
|
|
var index = middle + (((i % 2) == 0) ? (i / 2) : (((1 - i) / 2) - 1));
|
||
|
|
return this[index];
|
||
|
|
}
|
||
|
|
|
||
|
|
Array.prototype.contains = function(obj) {
|
||
|
|
var i = this.length;
|
||
|
|
while (i--) {
|
||
|
|
if (this[i] === obj) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
Math.alignUp = function(raw, multiple) {
|
||
|
|
return Math.floor((raw + multiple - 1) / multiple) * multiple;
|
||
|
|
}
|