Function readBigInt64LE

lib/internal/buffer.js:138–154

(offset = 0)

}

function readBigInt64LE(offset = 0) {
  validateNumber(offset, 'offset');
  const first = this[offset];
  const last = this[offset + 7];
  if (first === undefined || last === undefined)
    boundsError(offset, this.length - 8);

  const val = this[offset + 4] +
    this[offset + 5] * 2 ** 8 +
    this[offset + 6] * 2 ** 16 +
    (last << 24); // Overflow
  return (BigInt(val) << 32n) +
    BigInt(first +
    this[++offset] * 2 ** 8 +
    this[++offset] * 2 ** 16 +
    this[++offset] * 2 ** 24);
}

function readBigInt64BE(offset = 0) {
  validateNumber(offset, 'offset');