xref: /libCEED/tests/t409-qfunction.h (revision 2459f3f1cd4d7d2e210e1c26d669bd2fde41a0b6)
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 CEED_QFUNCTION(scale)(void *ctx, const CeedInt Q, const CeedScalar *const *in,
9                       CeedScalar *const *out) {
10   CeedScalar *scale = (CeedScalar *)ctx;
11   const CeedScalar *u = in[0];
12   CeedScalar *v = out[0];
13 
14   for (CeedInt i=0; i<Q; i++) {
15     v[i] = scale[1] * u[i];
16   }
17   scale[0] = 42;
18 
19   return 0;
20 }
21