lepu-test-platform-web/node_modules/es-abstract/2015/ToUint8.js

23 lines
594 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 $mod = require('../helpers/mod');
var $floor = $Math.floor;
var $abs = $Math.abs;
module.exports = function ToUint8(argument) {
var number = ToNumber(argument);
if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; }
var posInt = $sign(number) * $floor($abs(number));
return $mod(posInt, 0x100);
};