xref: /libCEED/include/ceed/jit-source/gallery/ceed-vectormassapply.h (revision c0b5abf0f23b15c4f0ada76f8abe9f8d2b6fa247)
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 mass matrix on a vector system with three components
10 **/
11 
12 #include <ceed/types.h>
13 
14 CEED_QFUNCTION(Vector3MassApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
15   // in[0] is u, size (Q)
16   // in[1] is quadrature data, size (Q)
17   const CeedScalar(*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[0], *q_data = in[1];
18   // out[0] is v, size (Q)
19   CeedScalar(*v)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0];
20 
21   const CeedInt num_comp = 3;
22 
23   // Quadrature point loop
24   CeedPragmaSIMD for (CeedInt i = 0; i < Q; i++) {
25     for (CeedInt c = 0; c < num_comp; c++) {
26       v[c][i] = u[c][i] * q_data[i];
27     }
28   }  // End of Quadrature Point Loop
29 
30   return CEED_ERROR_SUCCESS;
31 }
32