Method digitCount

src/big-decimal/big-decimal.ts:171–176

* Number of decimal digits in |significand|, computed once and cached on this * immutable value. `toPrecision`, `cmp`, `div`, `pow`, `ln` etc. all re-derive * the order of magnitude from the (unchanging) significand; caching turns the * O(log n) bigint `bigintDigits` count into an O(1) reus

()

   * @internal
   */
  _digitCount(): number {
    // The frozen static constants pre-seed `_digits` (see their definitions), so
    // the cache-write below is only ever reached on non-frozen, mutable
    // instances — no `Object.isFrozen` guard needed on this hot miss path.
    return this._digits ?? (this._digits = bigintDigits(this.significand));
  }

  constructor(value: string | number | bigint | BigDecimal) {
    if (value instanceof BigDecimal) {