import { ddMultDd, ddAddDd, twoDiff } from 'double-double';


function squaredDistanceBetweenDd(
        x: number[], y: number[]) {

    const [x0,y0] = x;
    const [x1,y1] = y;

    // xd = x0 - x1;
    // yd = y0 - y1;
    // xx = xd**2;
    // yy = yd**2;
    // return xx + yy

    const xd = twoDiff(x0,x1);
    const yd = twoDiff(y0,y1);
    const xx = ddMultDd(xd,xd);
    const yy = ddMultDd(yd,yd);

    return ddAddDd(xx,yy)[1];
}


export { squaredDistanceBetweenDd }