Function distmin

src/hacklib.c:656–669

distance between two points, in moves */

/* distance between two points, in moves */
int
distmin(coordxy x0, coordxy y0, coordxy x1, coordxy y1)
{
    coordxy dx = x0 - x1, dy = y0 - y1;

    if (dx < 0)
        dx = -dx;
    if (dy < 0)
        dy = -dy;
    /*  The minimum number of moves to get from (x0,y0) to (x1,y1) is the
     *  larger of the [absolute value of the] two deltas.
     */
    return (dx < dy) ? dy : dx;
}

/* square of Euclidean distance between pair of pts */
int