lepu-test-platform-web/node_modules/es-abstract/5/ToInteger.js

23 lines
598 B
JavaScript

'use strict';
var GetIntrinsic = require('../GetIntrinsic');
var $Math = GetIntrinsic('%Math%');
var ToNumber = require('./ToNumber');
var $isNaN = require('../helpers/isNaN');
var $isFinite = require('../helpers/isFinite');
var $sign = require('../helpers/sign');
var $floor = $Math.floor;
var $abs = $Math.abs;
// http://www.ecma-international.org/ecma-262/5.1/#sec-9.4
module.exports = function ToInteger(value) {
var number = ToNumber(value);
if ($isNaN(number)) { return 0; }
if (number === 0 || !$isFinite(number)) { return number; }
return $sign(number) * $floor($abs(number));
};