/**
 * Returns the exact result of multiplying two doubles.
 *
 * * the resulting array is the reverse of the standard twoSum in the literature.
 *
 * Theorem 18 (Shewchuk): Let a and b be p-bit floating-point numbers, where
 * p >= 6. Then the following algorithm will produce a nonoverlapping expansion
 * x + y such that ab = x + y, where x is an approximation to ab and y
 * represents the roundoff error in the calculation of x. Furthermore, if
 * round-to-even tiebreaking is used, x and y are non-adjacent.
 *
 * See https://people.eecs.berkeley.edu/~jrs/papers/robustr.pdf
 * @param a A double
 * @param b Another double
 */
declare function twoProduct(a: number, b: number): number[];
export { twoProduct };