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 **/ 11a0154adeSJed Brown 12a0154adeSJed Brown #ifndef poisson2dapply_h 13a0154adeSJed Brown #define poisson2dapply_h 14a0154adeSJed Brown 15c9c2c079SJeremy L Thompson #include <ceed.h> 16c9c2c079SJeremy L Thompson 17*2b730f8bSJeremy L Thompson CEED_QFUNCTION(Poisson2DApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 18a0154adeSJed Brown // *INDENT-OFF* 19a0154adeSJed Brown // in[0] is gradient u, shape [2, nc=1, Q] 20a0154adeSJed Brown // in[1] is quadrature data, size (3*Q) 21*2b730f8bSJeremy L Thompson const CeedScalar(*ug)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[0], (*q_data)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1]; 22a0154adeSJed Brown // out[0] is output to multiply against gradient v, shape [2, nc=1, Q] 23a0154adeSJed Brown CeedScalar(*vg)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0]; 24a0154adeSJed Brown // *INDENT-ON* 25a0154adeSJed Brown 26a0154adeSJed Brown const CeedInt dim = 2; 27a0154adeSJed Brown 28a0154adeSJed Brown // Quadrature point loop 29*2b730f8bSJeremy L Thompson CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 30a0154adeSJed Brown // Read qdata (dXdxdXdxT symmetric matrix) 31a0154adeSJed Brown // Stored in Voigt convention 32a0154adeSJed Brown // 0 2 33a0154adeSJed Brown // 2 1 34a0154adeSJed Brown // *INDENT-OFF* 35*2b730f8bSJeremy L Thompson const CeedScalar dXdxdXdxT[2][2] = { 36*2b730f8bSJeremy L Thompson {q_data[0][i], q_data[2][i]}, 37*2b730f8bSJeremy L Thompson {q_data[2][i], q_data[1][i]} 38a0154adeSJed Brown }; 39a0154adeSJed Brown // *INDENT-ON* 40a0154adeSJed Brown 41a0154adeSJed Brown // Apply Poisson operator 42a0154adeSJed Brown // j = direction of vg 43*2b730f8bSJeremy L Thompson for (CeedInt j = 0; j < dim; j++) vg[j][i] = (ug[0][i] * dXdxdXdxT[0][j] + ug[1][i] * dXdxdXdxT[1][j]); 44a0154adeSJed Brown } // End of Quadrature Point Loop 45a0154adeSJed Brown 46a0154adeSJed Brown return CEED_ERROR_SUCCESS; 47a0154adeSJed Brown } 48a0154adeSJed Brown 49a0154adeSJed Brown #endif // poisson2dapply_h 50