1 // Copyright (c) 2017-2022, 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 /** 9 @brief Ceed QFunction for applying the geometric data for the 3D Poisson 10 on a vector system with three components 11 operator 12 **/ 13 14 #ifndef vectorpoisson3dapply_h 15 #define vectorpoisson3dapply_h 16 17 #include <ceed.h> 18 19 CEED_QFUNCTION(Vector3Poisson3DApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 20 // in[0] is gradient u, shape [3, nc=3, Q] 21 // in[1] is quadrature data, size (6*Q) 22 const CeedScalar(*ug)[3][CEED_Q_VLA] = (const CeedScalar(*)[3][CEED_Q_VLA])in[0], (*q_data)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1]; 23 // out[0] is output to multiply against gradient v, shape [3, nc=3, Q] 24 CeedScalar(*vg)[3][CEED_Q_VLA] = (CeedScalar(*)[3][CEED_Q_VLA])out[0]; 25 26 const CeedInt dim = 3, num_comp = 3; 27 28 // Quadrature point loop 29 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 30 // Read qdata (dXdxdXdxT symmetric matrix) 31 // Stored in Voigt convention 32 // 0 5 4 33 // 5 1 3 34 // 4 3 2 35 const CeedScalar dXdxdXdxT[3][3] = { 36 {q_data[0][i], q_data[5][i], q_data[4][i]}, 37 {q_data[5][i], q_data[1][i], q_data[3][i]}, 38 {q_data[4][i], q_data[3][i], q_data[2][i]} 39 }; 40 41 // Apply Poisson Operator 42 // j = direction of vg 43 for (CeedInt j = 0; j < dim; j++) 44 for (CeedInt c = 0; c < num_comp; c++) 45 vg[j][c][i] = (ug[0][c][i] * dXdxdXdxT[0][j] + ug[1][c][i] * dXdxdXdxT[1][j] + ug[2][c][i] * dXdxdXdxT[2][j]); 46 } // End of Quadrature Point Loop 47 48 return CEED_ERROR_SUCCESS; 49 } 50 51 #endif // vectorpoisson3dapply_h 52