main
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Last change
on this file since d565449 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:
603 bytes
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| [d565449] | 1 | 'use strict';
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| 2 |
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| 3 | var clamp = require('./clamp');
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| 4 |
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| 5 | var ToNumber = require('./ToNumber');
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| 6 | var floor = require('./floor');
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| 7 |
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| 8 | var $isNaN = require('../helpers/isNaN');
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| 9 |
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| 10 | // https://262.ecma-international.org/15.0/#sec-touint8clamp
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| 11 |
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| 12 | module.exports = function ToUint8Clamp(argument) {
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| 13 | var number = ToNumber(argument); // step 1
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| 14 |
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| 15 | if ($isNaN(number)) { return 0; } // step 2
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| 16 |
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| 17 | var clamped = clamp(number, 0, 255); // step 4
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| 18 |
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| 19 | var f = floor(clamped); // step 5
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| 20 |
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| 21 | if (clamped < (f + 0.5)) { return f; } // step 6
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| 22 |
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| 23 | if (clamped > (f + 0.5)) { return f + 1; } // step 7
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| 24 |
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| 25 | return f % 2 === 0 ? f : f + 1; // step 8
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| 26 | };
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