Lines Matching refs:half_b
589 Scalar half_b = Scalar(0.5)*(c0 + c2_over_3*(Scalar(2)*c2_over_3*c2_over_3 - c1));
591 Scalar q = a_over_3*a_over_3*a_over_3 - half_b*half_b;
596 Scalar theta = atan2(sqrt(q),half_b)*s_inv3; // since sqrt(q) > 0, atan2 is in [0, pi] and theta is in [0, pi/3]
