lepu-test-platform-web/node_modules/es-abstract/2019/IsInteger.js

22 lines
514 B
JavaScript
Raw Normal View History

'use strict';
var GetIntrinsic = require('../GetIntrinsic');
var $Math = GetIntrinsic('%Math%');
var $floor = $Math.floor;
var $abs = $Math.abs;
var $isNaN = require('../helpers/isNaN');
var $isFinite = require('../helpers/isFinite');
// https://www.ecma-international.org/ecma-262/6.0/#sec-isinteger
module.exports = function IsInteger(argument) {
if (typeof argument !== 'number' || $isNaN(argument) || !$isFinite(argument)) {
return false;
}
var abs = $abs(argument);
return $floor(abs) === abs;
};