xref: /libCEED/tests/t566-operator.h (revision 23d6ba15ce2709c4ef8d39cdb3938232a70f8a28)
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 #include <ceed.h>
9 
10 CEED_QFUNCTION(setup)(void *ctx, const CeedInt Q,
11                       const CeedScalar *const *in,
12                       CeedScalar *const *out) {
13   const CeedScalar *weight = in[0], *J = in[1];
14   CeedScalar *rho = out[0];
15   for (CeedInt i=0; i<Q; i++) {
16     rho[i] = weight[i] * (J[i+Q*0]*J[i+Q*3] - J[i+Q*1]*J[i+Q*2]);
17   }
18   return 0;
19 }
20 
21 CEED_QFUNCTION(mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in,
22                      CeedScalar *const *out) {
23   // *INDENT-OFF*
24   const CeedScalar (*q_data)             = (const CeedScalar(*))in[0],
25                         (*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1];
26   CeedScalar            (*v)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0];
27   // *INDENT-ON*
28 
29   const CeedScalar num_comp = 2;
30   const CeedScalar scale[2][2] = {
31     {1.0, 2.0},
32     {3.0, 4.0},
33   };
34 
35   for (CeedInt i = 0; i < Q; i++) {
36     for (CeedInt c_out = 0; c_out < num_comp; c_out++) {
37       v[c_out][i] = 0.0;
38       for (CeedInt c_in = 0; c_in < num_comp; c_in++) {
39         v[c_out][i] += q_data[i] * u[c_in][i] * scale[c_in][c_out];
40       }
41     }
42   }
43   return 0;
44 }
45