double-double
Version:
Pure double-double precision functions *with strict error bounds*.
16 lines (15 loc) • 609 B
TypeScript
/**
* Returns the result of adding two double-double-precision floating point
* numbers.
*
* * relative error bound: 3u^2 + 13u^3, i.e. fl(a+b) = (a+b)(1+ϵ),
* where ϵ <= 3u^2 + 13u^3, u = 0.5 * Number.EPSILON
* * the error bound is not sharp - the worst case that could be found by the
* authors were 2.25u^2
*
* ALGORITHM 6 of https://hal.archives-ouvertes.fr/hal-01351529v3/document
* @param x a double-double precision floating point number
* @param y another double-double precision floating point number
*/
declare function ddAddDd(x: number[], y: number[]): number[];
export { ddAddDd };