Function correctDigits

test/big-decimal/comprehensive-benchmark.ts:80–84

Derive the number of correct significant digits from relative error.

(relErr: number)

/** Derive the number of correct significant digits from relative error. */
function correctDigits(relErr: number): number {
  if (relErr === 0) return Infinity;
  if (!isFinite(relErr)) return 0;
  return Math.max(0, Math.floor(-Math.log10(relErr)));
}

function withPrecision<T>(prec: number, fn: () => T): T {
  const savedBD = BigDecimal.precision;