19 lines
437 B
TypeScript
19 lines
437 B
TypeScript
// Copyright 2018-2023 the Deno authors. All rights reserved. MIT license.
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/**
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* Slice number into 64bit big endian byte array
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* @param d The number to be sliced
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* @param dest The sliced array
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*/
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export function sliceLongToBytes(
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d: number,
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dest = Array.from<number>({ length: 8 }),
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): number[] {
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let big = BigInt(d);
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for (let i = 0; i < 8; i++) {
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dest[7 - i] = Number(big & 0xffn);
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big >>= 8n;
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}
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return dest;
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}
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