27 lines
603 B
JavaScript
27 lines
603 B
JavaScript
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'use strict';
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var clamp = require('./clamp');
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var ToNumber = require('./ToNumber');
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var floor = require('./floor');
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var $isNaN = require('../helpers/isNaN');
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// https://262.ecma-international.org/15.0/#sec-touint8clamp
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module.exports = function ToUint8Clamp(argument) {
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var number = ToNumber(argument); // step 1
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if ($isNaN(number)) { return 0; } // step 2
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var clamped = clamp(number, 0, 255); // step 4
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var f = floor(clamped); // step 5
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if (clamped < (f + 0.5)) { return f; } // step 6
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if (clamped > (f + 0.5)) { return f + 1; } // step 7
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return f % 2 === 0 ? f : f + 1; // step 8
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};
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