xref: /libCEED/rust/libceed-sys/c-src/include/ceed/jit-source/gallery/ceed-vectormassapply.h (revision 2b730f8b5a9c809740a0b3b302db43a719c636b1)
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 #include <ceed.h>
17 
18 CEED_QFUNCTION(Vector3MassApply)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
19   // *INDENT-OFF*
20   // in[0] is u, size (Q)
21   // in[1] is quadrature data, size (Q)
22   const CeedScalar(*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[0], *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 for (CeedInt i = 0; i < Q; i++) {
31     for (CeedInt c = 0; c < num_comp; c++) {
32       v[c][i] = u[c][i] * q_data[i];
33     }
34   }  // End of Quadrature Point Loop
35 
36   return CEED_ERROR_SUCCESS;
37 }
38 
39 #endif  // vectormassapply_h
40