424     using Sk2d = skvx::Vec<2, double>;  in DEF_TEST()  typedef
425     const auto eval_conic = [](const SkPoint pts[3], float w, float t) -> Sk2d {  in DEF_TEST()
426         const auto eval = [](Sk2d A, Sk2d B, Sk2d C, float t) -> Sk2d {  in DEF_TEST()
430         const Sk2d p0 = {pts[0].fX, pts[0].fY};  in DEF_TEST()
431         const Sk2d p1 = {pts[1].fX, pts[1].fY};  in DEF_TEST()
432         const Sk2d p1w = p1 * w;  in DEF_TEST()
433         const Sk2d p2 = {pts[2].fX, pts[2].fY};  in DEF_TEST()
434         Sk2d numer = eval(p2 - p1w * 2 + p0, (p1w - p0) * 2, p0, t);  in DEF_TEST()
436         Sk2d denomC = {1, 1};  in DEF_TEST()
437         Sk2d denomB = {2 * (w - 1), 2 * (w - 1)};  in DEF_TEST()
438         Sk2d denomA = {-2 * (w - 1), -2 * (w - 1)};  in DEF_TEST()
439         Sk2d denom = eval(denomA, denomB, denomC, t);  in DEF_TEST()
443     const auto dot = [](const Sk2d& a, const Sk2d& b) -> double {  in DEF_TEST()
447     const auto length = [](const Sk2d& p) -> double { return sqrt(p[0] * p[0] + p[1] * p[1]); };  in DEF_TEST()
462                         Sk2d p0, p1, p2;  in DEF_TEST()
468                         const Sk2d n = {p2[1] - p0[1], p0[0] - p2[0]};  in DEF_TEST()