1 // Copyright (c) 2017-2022, 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 #ifndef poisson1dapply_h 13 #define poisson1dapply_h 14 15 #include <ceed.h> 16 17 CEED_QFUNCTION(Poisson1DApply)(void *ctx, const CeedInt Q, 18 const CeedScalar *const *in, 19 CeedScalar *const *out) { 20 // in[0] is gradient u, size (Q) 21 // in[1] is quadrature data, size (Q) 22 const CeedScalar *ug = in[0], *q_data = in[1]; 23 24 // out[0] is output to multiply against gradient v, size (Q) 25 CeedScalar *vg = out[0]; 26 27 // Quadrature point loop 28 CeedPragmaSIMD 29 for (CeedInt i=0; i<Q; i++) { 30 vg[i] = ug[i] * q_data[i]; 31 } // End of Quadrature Point Loop 32 33 return CEED_ERROR_SUCCESS; 34 } 35 36 #endif // poisson1dapply_h 37