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28 lines
1.1 KiB
28 lines
1.1 KiB
'use strict'; |
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var GetIntrinsic = require('get-intrinsic'); |
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var $Number = GetIntrinsic('%Number%'); |
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var $BigInt = GetIntrinsic('%BigInt%', true); |
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module.exports = function integerToNBytes(intValue, n, isLittleEndian) { |
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var Z = typeof intValue === 'bigint' ? $BigInt : $Number; |
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/* |
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if (intValue >= 0) { // step 3.d |
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// Let rawBytes be a List containing the n-byte binary encoding of intValue. If isLittleEndian is false, the bytes are ordered in big endian order. Otherwise, the bytes are ordered in little endian order. |
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} else { // step 3.e |
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// Let rawBytes be a List containing the n-byte binary 2's complement encoding of intValue. If isLittleEndian is false, the bytes are ordered in big endian order. Otherwise, the bytes are ordered in little endian order. |
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} |
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*/ |
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if (intValue < 0) { |
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intValue >>>= 0; // eslint-disable-line no-param-reassign |
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} |
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var rawBytes = []; |
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for (var i = 0; i < n; i++) { |
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rawBytes[isLittleEndian ? i : n - 1 - i] = $Number(intValue & Z(0xFF)); |
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intValue >>= Z(8); // eslint-disable-line no-param-reassign |
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} |
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return rawBytes; // step 4 |
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};
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