19 std::vector<litfloat>* F) {
26 std::vector<litfloat>* F) {
37 X[0] = X[0] + dz * X[2];
38 X[1] = X[1] + dz * X[3];
57 C[0] = C[0] + dz * C[2] + t3 * dz;
58 C[1] = C[1] + dz * C[7] + t8 * dz;
61 C[4] = C[4] + dz * C[13];
62 C[5] = C[5] + dz * C[14] + dttx * dttxz * C[11] + dttyz * C[12] + dttx * C[2]
64 C[6] = C[6] + dz * C[8] + t19 * dz;
67 C[9] = C[9] + dz * C[16];
68 C[10] = C[10] + dz * C[17] + dttxz * C[12] + dttyz * C[15] + dttx * C[7]
70 C[14] = C[14] + dttx * C[11] + dtty * C[12];
71 C[17] = C[17] + dttx * C[12] + dtty * C[15];
72 C[19] = C[19] + dttx * C[13] + dtty * C[16];
73 C[20] = C[20] + 2 * dttx * dtty * C[12] + dttx * C[14] + dtty * C[17]
74 + dttx * dttx * C[11] + dtty * dtty * C[15];
79 +
std::sqrt(1 + std::pow(X[2], 2) + std::pow(X[3], 2)) * dz