1a0154adeSJed Brown // Copyright (c) 2017-2022, Lawrence Livermore National Security, LLC and other CEED contributors. 2a0154adeSJed Brown // All Rights Reserved. See the top-level LICENSE and NOTICE files for details. 3a0154adeSJed Brown // 4a0154adeSJed Brown // SPDX-License-Identifier: BSD-2-Clause 5a0154adeSJed Brown // 6a0154adeSJed Brown // This file is part of CEED: http://github.com/ceed 7a0154adeSJed Brown 8a0154adeSJed Brown /** 9a0154adeSJed Brown @brief Ceed QFunction for applying the 2D Poisson operator 10a0154adeSJed Brown on a vector system with three components 11a0154adeSJed Brown **/ 12a0154adeSJed Brown 13a0154adeSJed Brown #ifndef vectorpoisson2dapply_h 14a0154adeSJed Brown #define vectorpoisson2dapply_h 15a0154adeSJed Brown 16*c9c2c079SJeremy L Thompson #include <ceed.h> 17*c9c2c079SJeremy L Thompson 18a0154adeSJed Brown CEED_QFUNCTION(Vector3Poisson2DApply)(void *ctx, const CeedInt Q, 19a0154adeSJed Brown const CeedScalar *const *in, 20a0154adeSJed Brown CeedScalar *const *out) { 21a0154adeSJed Brown // *INDENT-OFF* 22a0154adeSJed Brown // in[0] is gradient u, shape [2, nc=3, Q] 23a0154adeSJed Brown // in[1] is quadrature data, size (3*Q) 24a0154adeSJed Brown const CeedScalar (*ug)[3][CEED_Q_VLA] = (const CeedScalar(*)[3][CEED_Q_VLA])in[0], 25a0154adeSJed Brown (*q_data)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1]; 26a0154adeSJed Brown // out[0] is output to multiply against gradient v, shape [2, nc=3, Q] 27a0154adeSJed Brown CeedScalar (*vg)[3][CEED_Q_VLA] = (CeedScalar(*)[3][CEED_Q_VLA])out[0]; 28a0154adeSJed Brown // *INDENT-ON* 29a0154adeSJed Brown 30a0154adeSJed Brown const CeedInt dim = 2, num_comp = 3; 31a0154adeSJed Brown 32a0154adeSJed Brown // Quadrature point loop 33a0154adeSJed Brown CeedPragmaSIMD 34a0154adeSJed Brown for (CeedInt i=0; i<Q; i++) { 35a0154adeSJed Brown // Read qdata (dXdxdXdxT symmetric matrix) 36a0154adeSJed Brown // Stored in Voigt convention 37a0154adeSJed Brown // 0 2 38a0154adeSJed Brown // 2 1 39a0154adeSJed Brown // *INDENT-OFF* 40a0154adeSJed Brown const CeedScalar dXdxdXdxT[2][2] = {{q_data[0][i], 41a0154adeSJed Brown q_data[2][i]}, 42a0154adeSJed Brown {q_data[2][i], 43a0154adeSJed Brown q_data[1][i]} 44a0154adeSJed Brown }; 45a0154adeSJed Brown // *INDENT-ON* 46a0154adeSJed Brown 47a0154adeSJed Brown // Apply Poisson operator 48a0154adeSJed Brown // j = direction of vg 49a0154adeSJed Brown for (CeedInt j=0; j<dim; j++) 50a0154adeSJed Brown for (CeedInt c=0; c<num_comp; c++) 51a0154adeSJed Brown vg[j][c][i] = (ug[0][c][i] * dXdxdXdxT[0][j] + 52a0154adeSJed Brown ug[1][c][i] * dXdxdXdxT[1][j]); 53a0154adeSJed Brown } // End of Quadrature Point Loop 54a0154adeSJed Brown 55a0154adeSJed Brown return CEED_ERROR_SUCCESS; 56a0154adeSJed Brown } 57a0154adeSJed Brown 58a0154adeSJed Brown #endif // vectorpoisson2dapply_h 59