xref: /libCEED/tests/t405-qfunction.c (revision ca69d878b23bfd159c01c7745743549427aa7133)
1 /// @file
2 /// Test QFunction helper macro
3 /// \test Test QFunction helper macro
4 #include "t405-qfunction.h"
5 
6 #include <ceed.h>
7 
8 int main(int argc, char **argv) {
9   Ceed              ceed;
10   CeedVector        in[16], out[16];
11   CeedVector        Q_data, W, U, V;
12   CeedQFunction     qf_setup, qf_mass;
13   CeedInt           Q = 8;
14   const CeedScalar *vv;
15   CeedScalar        w[Q], u[Q], v[Q];
16 
17   CeedInit(argv[1], &ceed);
18 
19   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup);
20   CeedQFunctionAddInput(qf_setup, "w", 1, CEED_EVAL_WEIGHT);
21   CeedQFunctionAddOutput(qf_setup, "qdata", 1, CEED_EVAL_NONE);
22 
23   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass);
24   CeedQFunctionAddInput(qf_mass, "qdata", 1, CEED_EVAL_NONE);
25   CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP);
26   CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP);
27 
28   for (CeedInt i = 0; i < Q; i++) {
29     CeedScalar x = 2. * i / (Q - 1) - 1;
30     w[i]         = 1 - x * x;
31     u[i]         = 2 + 3 * x + 5 * x * x;
32     v[i]         = w[i] * u[i];
33   }
34 
35   CeedVectorCreate(ceed, Q, &W);
36   CeedVectorSetArray(W, CEED_MEM_HOST, CEED_USE_POINTER, w);
37   CeedVectorCreate(ceed, Q, &U);
38   CeedVectorSetArray(U, CEED_MEM_HOST, CEED_USE_POINTER, u);
39   CeedVectorCreate(ceed, Q, &V);
40   CeedVectorSetValue(V, 0);
41   CeedVectorCreate(ceed, Q, &Q_data);
42   CeedVectorSetValue(Q_data, 0);
43 
44   {
45     in[0]  = W;
46     out[0] = Q_data;
47     CeedQFunctionApply(qf_setup, Q, in, out);
48   }
49   {
50     in[0]  = W;
51     in[1]  = U;
52     out[0] = V;
53     CeedQFunctionApply(qf_mass, Q, in, out);
54   }
55 
56   CeedVectorGetArrayRead(V, CEED_MEM_HOST, &vv);
57   for (CeedInt i = 0; i < Q; i++) {
58     if (2 * v[i] != vv[i]) printf("[%" CeedInt_FMT "] v %f != vv %f\n", i, v[i], vv[i]);
59   }
60   CeedVectorRestoreArrayRead(V, &vv);
61 
62   CeedVectorDestroy(&W);
63   CeedVectorDestroy(&U);
64   CeedVectorDestroy(&V);
65   CeedVectorDestroy(&Q_data);
66   CeedQFunctionDestroy(&qf_setup);
67   CeedQFunctionDestroy(&qf_mass);
68   CeedDestroy(&ceed);
69   return 0;
70 }
71