| 'use strict'; |
| |
| var ToNumber = require('./ToNumber'); |
| |
| var $isNaN = require('../helpers/isNaN'); |
| var $isFinite = require('../helpers/isFinite'); |
| var $sign = require('../helpers/sign'); |
| |
| var abs = require('./abs'); |
| var floor = require('./floor'); |
| var modulo = require('./modulo'); |
| |
| // https://ecma-international.org/ecma-262/6.0/#sec-touint8 |
| |
| module.exports = function ToUint8(argument) { |
| var number = ToNumber(argument); |
| if ($isNaN(number) || number === 0 || !$isFinite(number)) { return 0; } |
| var posInt = $sign(number) * floor(abs(number)); |
| return modulo(posInt, 0x100); |
| }; |