xref: /libCEED/include/ceed/jit-source/gallery/ceed-vectormassapply.h (revision 2288fb5222bbca88523f94a06377dc76b8b46264)
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 mass matrix on a vector system
10            with three components
11 **/
12 
13 #ifndef vectormassapply_h
14 #define vectormassapply_h
15 
16 CEED_QFUNCTION(Vector3MassApply)(void *ctx, const CeedInt Q,
17                                  const CeedScalar *const *in, CeedScalar *const *out) {
18   // *INDENT-OFF*
19   // in[0] is u, size (Q)
20   // in[1] is quadrature data, size (Q)
21   const CeedScalar (*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[0],
22                             *q_data = in[1];
23   // out[0] is v, size (Q)
24   CeedScalar       (*v)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0];
25   // *INDENT-ON*
26 
27   const CeedInt num_comp = 3;
28 
29   // Quadrature point loop
30   CeedPragmaSIMD
31   for (CeedInt i=0; i<Q; i++) {
32     for (CeedInt c=0; c<num_comp; c++) {
33       v[c][i] = u[c][i] * q_data[i];
34     }
35   } // End of Quadrature Point Loop
36 
37   return CEED_ERROR_SUCCESS;
38 }
39 
40 #endif // vectormassapply_h
41