main
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Last change
on this file was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago |
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Update repo after prototype presentation
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100644
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File size:
515 bytes
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| [d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var ToNumber = require('./ToNumber');
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| 4 | var floor = require('./floor');
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| 5 |
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| 6 | var $isNaN = require('../helpers/isNaN');
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| 7 |
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| 8 | // https://262.ecma-international.org/6.0/#sec-touint8clamp
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| 9 |
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| 10 | module.exports = function ToUint8Clamp(argument) {
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| 11 | var number = ToNumber(argument);
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| 12 | if ($isNaN(number) || number <= 0) { return 0; }
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| 13 | if (number >= 0xFF) { return 0xFF; }
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| 14 | var f = floor(number);
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| 15 | if (f + 0.5 < number) { return f + 1; }
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| 16 | if (number < f + 0.5) { return f; }
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| 17 | if (f % 2 !== 0) { return f + 1; }
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| 18 | return f;
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| 19 | };
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