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