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25 lines
599 B
25 lines
599 B
2 years ago
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'use strict';
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var GetIntrinsic = require('get-intrinsic');
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var $TypeError = GetIntrinsic('%TypeError%');
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var ToInt32 = require('../ToInt32');
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var ToUint32 = require('../ToUint32');
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var Type = require('../Type');
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// https://262.ecma-international.org/11.0/#sec-numeric-types-number-leftShift
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module.exports = function NumberLeftShift(x, y) {
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if (Type(x) !== 'Number' || Type(y) !== 'Number') {
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throw new $TypeError('Assertion failed: `x` and `y` arguments must be Numbers');
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}
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var lnum = ToInt32(x);
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var rnum = ToUint32(y);
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var shiftCount = rnum & 0x1F;
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return lnum << shiftCount;
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};
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