1 // Copyright (c) 2017-2024, 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 1D Poisson operator 10 **/ 11 12 #include <ceed.h> 13 14 CEED_QFUNCTION(Poisson1DApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 15 // in[0] is gradient u, size (Q) 16 // in[1] is quadrature data, size (Q) 17 const CeedScalar *ug = in[0], *q_data = in[1]; 18 19 // out[0] is output to multiply against gradient v, size (Q) 20 CeedScalar *vg = out[0]; 21 22 // Quadrature point loop 23 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { vg[i] = ug[i] * q_data[i]; } // End of Quadrature Point Loop 24 25 return CEED_ERROR_SUCCESS; 26 } 27