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 // *INDENT-OFF* 21 // in[0] is gradient u, shape [3, nc=3, Q] 22 // in[1] is quadrature data, size (6*Q) 23 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]; 24 // out[0] is output to multiply against gradient v, shape [3, nc=3, Q] 25 CeedScalar(*vg)[3][CEED_Q_VLA] = (CeedScalar(*)[3][CEED_Q_VLA])out[0]; 26 // *INDENT-ON* 27 28 const CeedInt dim = 3, num_comp = 3; 29 30 // Quadrature point loop 31 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 32 // Read qdata (dXdxdXdxT symmetric matrix) 33 // Stored in Voigt convention 34 // 0 5 4 35 // 5 1 3 36 // 4 3 2 37 // *INDENT-OFF* 38 const CeedScalar dXdxdXdxT[3][3] = { 39 {q_data[0][i], q_data[5][i], q_data[4][i]}, 40 {q_data[5][i], q_data[1][i], q_data[3][i]}, 41 {q_data[4][i], q_data[3][i], q_data[2][i]} 42 }; 43 // *INDENT-ON* 44 45 // Apply Poisson Operator 46 // j = direction of vg 47 for (CeedInt j = 0; j < dim; j++) 48 for (CeedInt c = 0; c < num_comp; c++) 49 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]); 50 } // End of Quadrature Point Loop 51 52 return CEED_ERROR_SUCCESS; 53 } 54 55 #endif // vectorpoisson3dapply_h 56