xref: /libCEED/tests/t401-qfunction.h (revision 5754ecac3b7d1ff97b39b25dc78c06350f2c900d)
1 // Copyright (c) 2017-2018, Lawrence Livermore National Security, LLC.
2 // Produced at the Lawrence Livermore National Laboratory. LLNL-CODE-734707.
3 // All Rights reserved. See files LICENSE and NOTICE for details.
4 //
5 // This file is part of CEED, a collection of benchmarks, miniapps, software
6 // libraries and APIs for efficient high-order finite element and spectral
7 // element discretizations for exascale applications. For more information and
8 // source code availability see http://github.com/ceed.
9 //
10 // The CEED research is supported by the Exascale Computing Project 17-SC-20-SC,
11 // a collaborative effort of two U.S. Department of Energy organizations (Office
12 // of Science and the National Nuclear Security Administration) responsible for
13 // the planning and preparation of a capable exascale ecosystem, including
14 // software, applications, hardware, advanced system engineering and early
15 // testbed platforms, in support of the nation's exascale computing imperative.
16 
17 CEED_QFUNCTION(setup)(void *ctx, const CeedInt Q,
18                       const CeedScalar *const *in,
19                       CeedScalar *const *out) {
20   const CeedScalar *w = in[0];
21   CeedScalar *q_data = out[0];
22   for (CeedInt i=0; i<Q; i++) {
23     q_data[i] = w[i];
24   }
25   return 0;
26 }
27 
28 CEED_QFUNCTION(mass)(void *ctx, const CeedInt Q, const CeedScalar *const *in,
29                      CeedScalar *const *out) {
30   CeedScalar *scale = (CeedScalar *)ctx;
31   const CeedScalar *q_data = in[0], *u = in[1];
32   CeedScalar *v = out[0];
33   for (CeedInt i=0; i<Q; i++) {
34     v[i] = scale[4] * q_data[i] * u[i];
35   }
36   return 0;
37 }
38