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 /// @file 9 /// Mass operator for Navier-Stokes example using PETSc 10 11 #ifndef mass_h 12 #define mass_h 13 14 #include <ceed.h> 15 #include <math.h> 16 17 // ***************************************************************************** 18 // This QFunction applies the mass matrix to five interlaced fields. 19 // 20 // Inputs: 21 // u - Input vector at quadrature points 22 // q_data - Quadrature weights 23 // 24 // Output: 25 // v - Output vector at quadrature points 26 // 27 // ***************************************************************************** 28 CEED_QFUNCTION_HELPER int Mass_N(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out, const CeedInt N) { 29 // Inputs 30 const CeedScalar(*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[0]; 31 const CeedScalar(*q_data) = in[1]; 32 33 // Outputs 34 CeedScalar(*v)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0]; 35 36 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 37 CeedPragmaSIMD for (CeedInt j = 0; j < N; j++) { v[j][i] = q_data[i] * u[j][i]; } 38 } 39 return 0; 40 } 41 42 CEED_QFUNCTION(Mass_1)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { return Mass_N(ctx, Q, in, out, 1); } 43 44 CEED_QFUNCTION(Mass_5)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { return Mass_N(ctx, Q, in, out, 5); } 45 46 CEED_QFUNCTION(Mass_9)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { return Mass_N(ctx, Q, in, out, 9); } 47 48 CEED_QFUNCTION(Mass_22)(void *ctx, CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { return Mass_N(ctx, Q, in, out, 22); } 49 // ***************************************************************************** 50 51 #endif // mass_h 52