blob: 129f8b32684adf3020d5b7bc6d99506829433d76 [file] [log] [blame]
// 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;
}