import { TwoF64, f64 } from "./common.js";
//#region src/base/eft.d.ts
/**
 * Return the canonical {@link TwoF64|`TwoF64`} representation of `x + y`
 * (`fast2Sum` error-free transform).
 *
 * **NB. Assumes `|x| ≥ |y|`. Use {@link twoSum|`twoSum`} if this condition is
 * not satisfied.**
 *
 * FP ops: 3
 *
 * @param x A `f64` number
 * @param y A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x + y`
 */
export declare function normalize(x: f64, y: f64): TwoF64;
export declare const fast2Sum: typeof normalize;
/**
 * Fast extended-precision subtraction `x - y` (error-free transform).
 *
 * **NB. Assumes `|x| ≥ |y|`. Use `sub(x, y)` if this condition is not
 * satisfied.**
 *
 * FP ops: 3
 *
 * @param x A `f64` number
 * @param y A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x - y`
 */
export declare function fast2Diff(x: f64, y: f64): TwoF64;
/**
 * Dekker/Veltkamp splitter function (error-free transform).
 *
 * Split the given number into two halves, `hi` and `lo`, using the splitting
 * constant `F64_SPLITTER`. Return a tuple `[hi, lo]` where the non-zero bits in
 * `hi` and `lo` don't overlap and such that mathematically `hi + lo = x`.
 *
 * FP ops: 4
 *
 * @see {@link F64_SPLITTER}
 * @param x A `f64` number
 * @returns A tuple `[hi, lo]` such that `hi + lo = x`
 */
export declare function split(x: f64): [f64, f64];
/**
 * Extended-precision addition `x + y` (error-free transform - Møller & Knuth
 * algorithm).
 *
 * FP ops: 6
 *
 * @param x A `f64` number
 * @param y A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x + y`
 */
export declare function twoSum(x: f64, y: f64): TwoF64;
/**
 * Extended-precision subtraction `x - y` (error-free transform - Møller & Knuth
 * algorithm).
 *
 * FP ops: 6
 *
 * @param x A `f64` number
 * @param y A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x - y`
 */
export declare function twoDiff(x: f64, y: f64): TwoF64;
/**
 * Extended-precision multiplication `x * y` (error-free transform - Dekker /
 * Veltkamp product).
 *
 * FP ops: 17
 *
 * @param x A `f64` number
 * @param y A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x * y`
 */
export declare function twoProd(x: f64, y: f64): TwoF64;
/**
 * Extended-precision multiplication `x * x` (error-free transform - Dekker /
 * Veltkamp product).
 *
 * FP ops: 12
 *
 * @param x A `f64` number
 * @returns The {@link TwoF64|`TwoF64`} representation of `x²`
 */
export declare function twoSquare(x: f64): TwoF64;
//#endregion