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