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, 20 const CeedScalar *const *in, 21 CeedScalar *const *out) { 22 // *INDENT-OFF* 23 // in[0] is gradient u, shape [3, nc=3, Q] 24 // in[1] is quadrature data, size (6*Q) 25 const CeedScalar (*ug)[3][CEED_Q_VLA] = (const CeedScalar(*)[3][CEED_Q_VLA])in[0], 26 (*q_data)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1]; 27 // out[0] is output to multiply against gradient v, shape [3, nc=3, Q] 28 CeedScalar (*vg)[3][CEED_Q_VLA] = (CeedScalar(*)[3][CEED_Q_VLA])out[0]; 29 // *INDENT-ON* 30 31 const CeedInt dim = 3, num_comp = 3; 32 33 // Quadrature point loop 34 CeedPragmaSIMD 35 for (CeedInt i=0; i<Q; i++) { 36 // Read qdata (dXdxdXdxT symmetric matrix) 37 // Stored in Voigt convention 38 // 0 5 4 39 // 5 1 3 40 // 4 3 2 41 // *INDENT-OFF* 42 const CeedScalar dXdxdXdxT[3][3] = {{q_data[0][i], 43 q_data[5][i], 44 q_data[4][i]}, 45 {q_data[5][i], 46 q_data[1][i], 47 q_data[3][i]}, 48 {q_data[4][i], 49 q_data[3][i], 50 q_data[2][i]} 51 }; 52 // *INDENT-ON* 53 54 // Apply Poisson Operator 55 // j = direction of vg 56 for (CeedInt j=0; j<dim; j++) 57 for (CeedInt c=0; c<num_comp; c++) 58 vg[j][c][i] = (ug[0][c][i] * dXdxdXdxT[0][j] + 59 ug[1][c][i] * dXdxdXdxT[1][j] + 60 ug[2][c][i] * dXdxdXdxT[2][j]); 61 } // End of Quadrature Point Loop 62 63 return CEED_ERROR_SUCCESS; 64 } 65 66 #endif // vectorpoisson3dapply_h 67