import type { UncertainNumber } from '../UncertainNumber';
/**
 * Make UncertainNumber
 *
 * @param value value of the uncertain number, if `NaN` or `undefined`, it will be set to 0 and `isUncertain=true`
 * @param isUncertain if `true`, the value is uncertain, otherwise depends on the value
 *
 * @private utility for initializating UncertainNumber
 */
export declare function uncertainNumber(value?: number | typeof NaN | undefined | null, isUncertain?: boolean): UncertainNumber;