1 // Copyright (c) 2017-2025, 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 building the geometric data for the 1D Poisson operator 10 **/ 11 #include <ceed/types.h> 12 13 CEED_QFUNCTION(Poisson1DBuild)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 14 // At every quadrature point, compute w/det(J).adj(J).adj(J)^T and store 15 // the symmetric part of the result. 16 17 // in[0] is Jacobians, size (Q) 18 // in[1] is quadrature weights, size (Q) 19 const CeedScalar *J = in[0], *w = in[1]; 20 21 // out[0] is qdata, size (Q) 22 CeedScalar *q_data = out[0]; 23 24 // Quadrature point loop 25 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { q_data[i] = w[i] / J[i]; } // End of Quadrature Point Loop 26 27 return CEED_ERROR_SUCCESS; 28 } 29