Function plus

packages/core/src/utils/number.ts:300–303

(num1: number, num2: number)

 * Precise addition (to resolve loss of precision)
 */
export function plus(num1: number, num2: number): number {
  const baseNum = Math.pow(10, Math.max(digitLength(num1), digitLength(num2)));
  return (times(num1, baseNum) + times(num2, baseNum)) / baseNum;
}

/**
 * Precise subtraction (to resolve loss of precision)