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. 3 // 4 // SPDX-License-Identifier: BSD-2-Clause 5 // 6 // This file is part of CEED: http://github.com/ceed 7 8 #include <ceed/types.h> 9 10 /// A structure used to pass additional data to f_build_mass 11 struct BuildContext { 12 CeedInt dim, space_dim; 13 }; 14 15 /// libCEED Q-function for building quadrature data for a mass operator 16 CEED_QFUNCTION(build_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 17 struct BuildContext *build_data = (struct BuildContext *)ctx; 18 19 // in[0] is Jacobians with shape [dim, dim, Q] 20 // in[1] is quadrature weights with shape [1, Q] 21 const CeedScalar *w = in[1]; 22 CeedScalar *q_data = out[0]; 23 24 switch (build_data->dim + 10 * build_data->space_dim) { 25 case 11: { 26 const CeedScalar(*J)[1][CEED_Q_VLA] = (const CeedScalar(*)[1][CEED_Q_VLA])in[0]; 27 28 // Quadrature Point Loop 29 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { q_data[i] = J[0][0][i] * w[i]; } // End of Quadrature Point Loop 30 } break; 31 case 22: { 32 const CeedScalar(*J)[2][CEED_Q_VLA] = (const CeedScalar(*)[2][CEED_Q_VLA])in[0]; 33 34 // Quadrature Point Loop 35 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 36 q_data[i] = (J[0][0][i] * J[1][1][i] - J[0][1][i] * J[1][0][i]) * w[i]; 37 } // End of Quadrature Point Loop 38 } break; 39 case 33: { 40 const CeedScalar(*J)[3][CEED_Q_VLA] = (const CeedScalar(*)[3][CEED_Q_VLA])in[0]; 41 42 // Quadrature Point Loop 43 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 44 q_data[i] = 45 (J[0][0][i] * (J[1][1][i] * J[2][2][i] - J[1][2][i] * J[2][1][i]) - J[0][1][i] * (J[1][0][i] * J[2][2][i] - J[1][2][i] * J[2][0][i]) + 46 J[0][2][i] * (J[1][0][i] * J[2][1][i] - J[1][1][i] * J[2][0][i])) * 47 w[i]; 48 } // End of Quadrature Point Loop 49 } break; 50 } 51 return CEED_ERROR_SUCCESS; 52 } 53 54 /// libCEED Q-function for applying a mass operator 55 CEED_QFUNCTION(apply_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 56 // in[0], out[0] are solution variables with shape [1, Q] 57 // in[1] is quadrature data with shape [1, Q] 58 const CeedScalar *u = in[0], *q_data = in[1]; 59 CeedScalar *v = out[0]; 60 61 // Quadrature Point Loop 62 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { v[i] = q_data[i] * u[i]; } // End of Quadrature Point Loop 63 return CEED_ERROR_SUCCESS; 64 } 65