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 CEED_QFUNCTION(Vector3Poisson3DApply)(void *ctx, const CeedInt Q, 18 const CeedScalar *const *in, 19 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], 24 (*q_data)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1]; 25 // out[0] is output to multiply against gradient v, shape [3, nc=3, Q] 26 CeedScalar (*vg)[3][CEED_Q_VLA] = (CeedScalar(*)[3][CEED_Q_VLA])out[0]; 27 // *INDENT-ON* 28 29 const CeedInt dim = 3, num_comp = 3; 30 31 // Quadrature point loop 32 CeedPragmaSIMD 33 for (CeedInt i=0; i<Q; i++) { 34 // Read qdata (dXdxdXdxT symmetric matrix) 35 // Stored in Voigt convention 36 // 0 5 4 37 // 5 1 3 38 // 4 3 2 39 // *INDENT-OFF* 40 const CeedScalar dXdxdXdxT[3][3] = {{q_data[0][i], 41 q_data[5][i], 42 q_data[4][i]}, 43 {q_data[5][i], 44 q_data[1][i], 45 q_data[3][i]}, 46 {q_data[4][i], 47 q_data[3][i], 48 q_data[2][i]} 49 }; 50 // *INDENT-ON* 51 52 // Apply Poisson Operator 53 // j = direction of vg 54 for (CeedInt j=0; j<dim; j++) 55 for (CeedInt c=0; c<num_comp; c++) 56 vg[j][c][i] = (ug[0][c][i] * dXdxdXdxT[0][j] + 57 ug[1][c][i] * dXdxdXdxT[1][j] + 58 ug[2][c][i] * dXdxdXdxT[2][j]); 59 } // End of Quadrature Point Loop 60 61 return CEED_ERROR_SUCCESS; 62 } 63 64 #endif // vectorpoisson3dapply_h 65