/**
 * Returns a double-double precision implicit form of the given quadratic
 * bezier curve and a coefficientwise error bound.
 *
 * Returned coefficients are subscripted to match their monomial's variables,
 * e.g. `vₓᵧ` is the coefficient of the monomial `vₓᵧxy`
 *
 * * the implicit form is given by: `vₓₓx² +vₓᵧxy + vᵧᵧy² + vₓx + vᵧy + v = 0`
 * * intermediate calculations are done in double-double precision
 * * adapted from [Indrek Mandre](http://www.mare.ee/indrek/misc/2d.pdf)
 *
 * @param ps a quadratic bezier curve given as an array of its control points,
 * e.g. `[[1,2],[3,4],[5,7]]`
 *
 * @doc mdx
 */
declare function getImplicitForm2Dd(ps: number[][]): {
    vₓₓ: number[];
    vₓᵧ: number[];
    vᵧᵧ: number[];
    vₓ: number[];
    vᵧ: number[];
    v: number[];
};
export { getImplicitForm2Dd };