| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 1 | 'use strict'; |
| 2 | |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 3 | var ToNumber = require('./ToNumber'); |
| Tim van der Lippe | 2c89197 | 2021-07-29 15:22:50 | [diff] [blame] | 4 | var floor = require('./floor'); |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 5 | |
| 6 | var $isNaN = require('../helpers/isNaN'); |
| 7 | |
| Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 8 | // https://262.ecma-international.org/6.0/#sec-touint8clamp |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 9 | |
| 10 | module.exports = function ToUint8Clamp(argument) { |
| 11 | var number = ToNumber(argument); |
| 12 | if ($isNaN(number) || number <= 0) { return 0; } |
| 13 | if (number >= 0xFF) { return 0xFF; } |
| Nikolay Vitkov | d76576c | 2024-12-02 14:10:15 | [diff] [blame] | 14 | var f = floor(number); |
| Tim van der Lippe | fdbd42e | 2020-04-07 14:14:36 | [diff] [blame] | 15 | if (f + 0.5 < number) { return f + 1; } |
| 16 | if (number < f + 0.5) { return f; } |
| 17 | if (f % 2 !== 0) { return f + 1; } |
| 18 | return f; |
| 19 | }; |
