// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
// This module is browser compatible.

/**
 * Slice number into 64bit big endian byte array
 * @param d The number to be sliced
 * @param dest The sliced array
 *
 * @deprecated (will be removed after 1.0.0) Use the {@link https://developer.mozilla.org/en-US/docs/Web/API/Streams_API | Web Streams API} instead.
 */
export function sliceLongToBytes(
  d: number,
  dest: number[] = Array.from<number>({ length: 8 }),
): number[] {
  let big = BigInt(d);
  for (let i = 0; i < 8; i++) {
    dest[7 - i] = Number(big & 0xffn);
    big >>= 8n;
  }
  return dest;
}