Function dist2

src/hacklib.c:672–678

square of Euclidean distance between pair of pts */

/* square of Euclidean distance between pair of pts */
int
dist2(coordxy x0, coordxy y0, coordxy x1, coordxy y1)
{
    coordxy dx = x0 - x1, dy = y0 - y1;

    return dx * dx + dy * dy;
}

/* integer square root function without using floating point */
int