1 // Copyright (c) 2017-2026, Lawrence Livermore National Security, LLC and other CEED contributors.
2 // All Rights Reserved. See the top-level LICENSE and NOTICE files for details.
4 // SPDX-License-Identifier: BSD-2-Clause
10 /// A structure used to pass additional data to f_build_mass_diff
15 /// libCEED Q-function for building quadrature data for a mass + diffusion operator
26   switch (build_data->dim + 10 * build_data->space_dim) {  in build_mass_diff()
42         // J: 0 2   q_data: 0 2   adj(J):  J22 -J12  in build_mass_diff()
43         //    1 3           2 1           -J10  J00  in build_mass_diff()
48         const CeedScalar qw  = w[i] / (J00 * J11 - J10 * J01);  in build_mass_diff()
51         q_data[0][i] = w[i] * (J00 * J11 - J10 * J01);  in build_mass_diff()
56         q_data[3][i] = -qw * (J00 * J01 + J10 * J11);  in build_mass_diff()
64         CeedScalar A[3][3];  in build_mass_diff()  local
68             // Equivalent code with J as a VLA and no mod operations:  in build_mass_diff()
69             // A[k][j] = J[j+1][k+1]*J[j+2][k+2] - J[j+1][k+2]*J[j+2][k+1]  in build_mass_diff()
70             A[k][j] =  in build_mass_diff()
71 …J[(k + 1) % 3][(j + 1) % 3][i] * J[(k + 2) % 3][(j + 2) % 3][i] - J[(k + 2) % 3][(j + 1) % 3][i] *…  in build_mass_diff()
76 … const CeedScalar qw = w[i] / (J[0][0][i] * A[0][0] + J[0][1][i] * A[0][1] + J[0][2][i] * A[0][2]);  in build_mass_diff()
79         q_data[0][i] = w[i] * (J[0][0][i] * A[0][0] + J[0][1][i] * A[0][1] + J[0][2][i] * A[0][2]);  in build_mass_diff()
86         q_data[1][i] = qw * (A[0][0] * A[0][0] + A[0][1] * A[0][1] + A[0][2] * A[0][2]);  in build_mass_diff()
87         q_data[2][i] = qw * (A[1][0] * A[1][0] + A[1][1] * A[1][1] + A[1][2] * A[1][2]);  in build_mass_diff()
88         q_data[3][i] = qw * (A[2][0] * A[2][0] + A[2][1] * A[2][1] + A[2][2] * A[2][2]);  in build_mass_diff()
89         q_data[4][i] = qw * (A[1][0] * A[2][0] + A[1][1] * A[2][1] + A[1][2] * A[2][2]);  in build_mass_diff()
90         q_data[5][i] = qw * (A[0][0] * A[2][0] + A[0][1] * A[2][1] + A[0][2] * A[2][2]);  in build_mass_diff()
91         q_data[6][i] = qw * (A[0][0] * A[1][0] + A[0][1] * A[1][1] + A[0][2] * A[1][2]);  in build_mass_diff()
98 /// libCEED Q-function for applying a mass + diffusion operator
107   switch (build_data->dim) {  in apply_mass_diff()