xref: /libCEED/tests/t507-operator.h (revision cd4035ff32b1ddface7e7603292a8647e8b8628f)
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], *dxdX = in[1];
14   CeedScalar *rho = out[0];
15 
16   for (CeedInt i=0; i<Q; i++) {
17     rho[i] = weight[i] * dxdX[i];
18   }
19   return 0;
20 }
21 
22 CEED_QFUNCTION(mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in,
23                      CeedScalar *const *out) {
24   // *INDENT-OFF*
25   const CeedScalar             *rho = in[0],
26                    (*u)[CEED_Q_VLA] = (const CeedScalar(*)[CEED_Q_VLA])in[1];
27   CeedScalar       (*v)[CEED_Q_VLA] = (CeedScalar(*)[CEED_Q_VLA])out[0];
28   // *INDENT-ON*
29 
30   for (CeedInt i=0; i<Q; i++) {
31     v[0][i] = rho[i] * u[0][i];
32     v[1][i] = rho[i] * u[1][i];
33   }
34   return 0;
35 }
36