2796 hookEllipseY(double scan_y,  in hookEllipseY()  argument
2802         if ((scan_y > 0 && !left) || (scan_y < 0 && left))  in hookEllipseY()
2806     ret = (acc->h4 * scan_y) / (acc->h2mw2);  in hookEllipseY()
2819 hookX(double scan_y,  in hookX()  argument
2827         ellipse_y = hookEllipseY(scan_y, bound, acc, left);  in hookX()
2834                 acc->h2 * scan_y * (3 * ellipse_y * ellipse_y - 2 * acc->h2);  in hookX()
2838                 x = (acc->h2 * scan_y - ellipse_y * acc->h2mw2) *  in hookX()
2846         if (acc->left.valid && boundedLe(scan_y, bound->left)) {  in hookX()
2847             x = intersectLine(scan_y, acc->left);  in hookX()
2851                 x = intersectLine(scan_y, acc->right);  in hookX()
2857         if (acc->right.valid && boundedLe(scan_y, bound->right)) {  in hookX()
2858             x = intersectLine(scan_y, acc->right);  in hookX()
2862                 x = intersectLine(scan_y, acc->left);  in hookX()