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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Property mode
set to
100644
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File size:
948 bytes
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| 1 | 'use strict';
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| 2 |
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| 3 | var GetIntrinsic = require('get-intrinsic');
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| 4 |
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| 5 | var $BigInt = GetIntrinsic('%BigInt%', true);
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| 6 | var $pow = GetIntrinsic('%Math.pow%');
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| 7 |
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| 8 | var ToBigInt = require('./ToBigInt');
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| 9 | var BigIntRemainder = require('./BigInt/remainder');
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| 10 |
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| 11 | var modBigInt = require('../helpers/modBigInt');
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| 12 |
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| 13 | // BigInt(2**63), but node v10.4-v10.8 have a bug where you can't `BigInt(x)` anything larger than MAX_SAFE_INTEGER
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| 14 | var twoSixtyThree = $BigInt && (BigInt($pow(2, 32)) * BigInt($pow(2, 31)));
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| 15 |
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| 16 | // BigInt(2**64), but node v10.4-v10.8 have a bug where you can't `BigInt(x)` anything larger than MAX_SAFE_INTEGER
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| 17 | var twoSixtyFour = $BigInt && (BigInt($pow(2, 32)) * BigInt($pow(2, 32)));
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| 18 |
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| 19 | // https://262.ecma-international.org/11.0/#sec-tobigint64
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| 20 |
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| 21 | module.exports = function ToBigInt64(argument) {
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| 22 | var n = ToBigInt(argument);
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| 23 | var int64bit = modBigInt(BigIntRemainder, n, twoSixtyFour);
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| 24 | return int64bit >= twoSixtyThree ? int64bit - twoSixtyFour : int64bit;
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| 25 | };
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