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 #include <ceed/types.h> 9 10 /// A structure used to pass additional data to f_build_mass 11 struct BuildContext { 12 CeedInt dim, space_dim; 13 }; 14 15 /// libCEED Q-function for building quadrature data for a mass operator 16 CEED_QFUNCTION(f_build_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 17 // in[0] is Jacobians with shape [dim, nc=dim, Q] 18 // in[1] is quadrature weights, size (Q) 19 BuildContext *bc = (BuildContext *)ctx; 20 const CeedScalar *J = in[0], *w = in[1]; 21 CeedScalar *qdata = out[0]; 22 23 switch (bc->dim + 10 * bc->space_dim) { 24 case 11: 25 // Quadrature Point Loop 26 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { qdata[i] = J[i] * w[i]; } 27 break; 28 case 22: 29 // Quadrature Point Loop 30 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 31 // 0 2 32 // 1 3 33 qdata[i] = (J[i + Q * 0] * J[i + Q * 3] - J[i + Q * 1] * J[i + Q * 2]) * w[i]; 34 } 35 break; 36 case 33: 37 // Quadrature Point Loop 38 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { 39 // 0 3 6 40 // 1 4 7 41 // 2 5 8 42 qdata[i] = (J[i + Q * 0] * (J[i + Q * 4] * J[i + Q * 8] - J[i + Q * 5] * J[i + Q * 7]) - 43 J[i + Q * 1] * (J[i + Q * 3] * J[i + Q * 8] - J[i + Q * 5] * J[i + Q * 6]) + 44 J[i + Q * 2] * (J[i + Q * 3] * J[i + Q * 7] - J[i + Q * 4] * J[i + Q * 6])) * 45 w[i]; 46 } 47 break; 48 } 49 return 0; 50 } 51 52 /// libCEED Q-function for applying a mass operator 53 CEED_QFUNCTION(f_apply_mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) { 54 const CeedScalar *u = in[0], *qdata = in[1]; 55 CeedScalar *v = out[0]; 56 57 // Quadrature Point Loop 58 CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) { v[i] = qdata[i] * u[i]; } 59 return 0; 60 } 61