xref: /libCEED/tests/t400-qfunction.c (revision 9c774eddf8c0b4f5416196d32c5355c9591a7190)
1 /// @file
2 /// Test creation, evaluation, and destruction for QFunction
3 /// \test Test creation, evaluation, and destruction for QFunction
4 #include <ceed.h>
5 #include "t400-qfunction.h"
6 
7 int main(int argc, char **argv) {
8   Ceed ceed;
9   CeedVector in[16], out[16];
10   CeedVector Q_data, W, U, V;
11   CeedQFunction qf_setup, qf_mass;
12   CeedInt Q = 8;
13   const CeedScalar *vv;
14   CeedScalar w[Q], u[Q], v[Q];
15 
16   CeedInit(argv[1], &ceed);
17 
18   CeedQFunctionCreateInterior(ceed, 1, setup, setup_loc, &qf_setup);
19   CeedQFunctionAddInput(qf_setup, "w", 1, CEED_EVAL_WEIGHT);
20   CeedQFunctionAddOutput(qf_setup, "qdata", 1, CEED_EVAL_NONE);
21 
22   CeedQFunctionCreateInterior(ceed, 1, mass, mass_loc, &qf_mass);
23   CeedQFunctionAddInput(qf_mass, "qdata", 1, CEED_EVAL_NONE);
24   CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP);
25   CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP);
26 
27   for (CeedInt i=0; i<Q; i++) {
28     CeedScalar x = 2.*i/(Q-1) - 1;
29     w[i] = 1 - x*x;
30     u[i] = 2 + 3*x + 5*x*x;
31     v[i] = w[i] * u[i];
32   }
33 
34   CeedVectorCreate(ceed, Q, &W);
35   CeedVectorSetArray(W, CEED_MEM_HOST, CEED_USE_POINTER, w);
36   CeedVectorCreate(ceed, Q, &U);
37   CeedVectorSetArray(U, CEED_MEM_HOST, CEED_USE_POINTER, u);
38   CeedVectorCreate(ceed, Q, &V);
39   CeedVectorSetValue(V, 0);
40   CeedVectorCreate(ceed, Q, &Q_data);
41   CeedVectorSetValue(Q_data, 0);
42 
43   {
44     in[0] = W;
45     out[0] = Q_data;
46     CeedQFunctionApply(qf_setup, Q, in, out);
47   }
48   {
49     in[0] = W;
50     in[1] = U;
51     out[0] = V;
52     CeedQFunctionApply(qf_mass, Q, in, out);
53   }
54 
55   CeedVectorGetArrayRead(V, CEED_MEM_HOST, &vv);
56   for (CeedInt i=0; i<Q; i++)
57     if (v[i] != vv[i])
58       // LCOV_EXCL_START
59       printf("[%d] v %f != vv %f\n",i, v[i], vv[i]);
60   // LCOV_EXCL_STOP
61   CeedVectorRestoreArrayRead(V, &vv);
62 
63   CeedVectorDestroy(&W);
64   CeedVectorDestroy(&U);
65   CeedVectorDestroy(&V);
66   CeedVectorDestroy(&Q_data);
67   CeedQFunctionDestroy(&qf_setup);
68   CeedQFunctionDestroy(&qf_mass);
69   CeedDestroy(&ceed);
70   return 0;
71 }
72