39     std::vector<Real> dydx(x.size(), Real(0));  in test_constant()  local
42     auto dydx_copy = dydx;  in test_constant()
71     for (auto & t : dydx) {  in test_constant()
92     std::vector<Real> dydx{1,1,1,1};  in test_linear()  local
96     auto dydx_copy = dydx;  in test_linear()
109     dydx.resize(45);  in test_linear()
113         dydx[i] = 1;  in test_linear()
118     dydx_copy = dydx;  in test_linear()
136     for (auto & t : dydx) {  in test_linear()
168     std::vector<Real> dydx(x.size());  in test_quadratic()  local
171         dydx[i] = x[i];  in test_quadratic()
174     auto s = cubic_hermite(std::move(x), std::move(y), std::move(dydx));  in test_quadratic()
188         std::vector<Real> dydx(n);  in test_interpolation_condition()  local
197             dydx[i] = dis(rd);  in test_interpolation_condition()
202         auto dydx_copy = dydx;  in test_interpolation_condition()
207             CHECK_ULP_CLOSE(dydx[i], s.prime(x[i]), 2);  in test_interpolation_condition()
222     std::vector<Real> dydx(y.size(), Real(0));  in test_cardinal_constant()  local
224     auto hermite_spline = cardinal_cubic_hermite(std::move(y), std::move(dydx), x0, dx);  in test_cardinal_constant()
278     std::vector<Real> dydx{1,1,1,1};  in test_cardinal_linear()  local
280     auto dydx_copy = dydx;  in test_cardinal_linear()
293     dydx.resize(45);  in test_cardinal_linear()
296         dydx[i] = 1;  in test_cardinal_linear()
299     hermite_spline = cardinal_cubic_hermite(std::move(y), std::move(dydx), x0, dx);  in test_cardinal_linear()
347     std::vector<Real> dydx(y.size());  in test_cardinal_quadratic()  local
351         dydx[i] = x;  in test_cardinal_quadratic()
354     auto s = cardinal_cubic_hermite(std::move(y), std::move(dydx), x0, dx);  in test_cardinal_quadratic()
401         std::vector<Real> dydx(n);  in test_cardinal_interpolation_condition()  local
408             dydx[i] = dis(rd);  in test_cardinal_interpolation_condition()
412         auto dydx_copy = dydx;  in test_cardinal_interpolation_condition()
416             CHECK_ULP_CLOSE(dydx[i], s.prime(x0 + i*dx), 2);  in test_cardinal_interpolation_condition()