1 // Copyright (c) 2017-2026, 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 #include <ceed/types.h> 12 13 CEED_QFUNCTION(Poisson1DApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 14 // in[0] is gradient u, size (Q) 15 // in[1] is quadrature data, size (Q) 16 const CeedScalar *ug = in[0], *q_data = in[1]; 17 18 // out[0] is output to multiply against gradient v, size (Q) 19 CeedScalar *vg = out[0]; 20 21 // Quadrature point loop 22 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { vg[i] = ug[i] * q_data[i]; } // End of Quadrature Point Loop 23 return CEED_ERROR_SUCCESS; 24 } 25