xref: /libCEED/tests/t507-operator.h (revision 356036fa84f714fa73ef64c9a80ce2028dde816f)
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], *dxdX = in[1];
12   CeedScalar       *rho = out[0];
13 
14   for (CeedInt i = 0; i < Q; i++) {
15     rho[i] = weight[i] * dxdX[i];
16   }
17   return 0;
18 }
19 
20 CEED_QFUNCTION(mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in, CeedScalar *const *out) {
21   const CeedScalar *rho = 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 
24   for (CeedInt i = 0; i < Q; i++) {
25     v[0][i] = rho[i] * u[0][i];
26     v[1][i] = rho[i] * u[1][i];
27   }
28   return 0;
29 }
30