xref: /libCEED/tests/t208-elemrestriction.c (revision 0acb07cd915a46efccf10dc99d60f8eab5d4016d)
1be9261b7Sjeremylt /// @file
2be9261b7Sjeremylt /// Test creation, use, and destruction of a blocked element restriction
3be9261b7Sjeremylt /// \test Test creation, use, and destruction of a blocked element restriction
4be9261b7Sjeremylt #include <ceed.h>
5*0acb07cdSJeremy L Thompson #include <ceed/backend.h>
6be9261b7Sjeremylt 
7be9261b7Sjeremylt int main(int argc, char **argv) {
8be9261b7Sjeremylt   Ceed ceed;
9be9261b7Sjeremylt   CeedVector x, y;
10d1d35e2fSjeremylt   CeedInt num_elem = 8;
11d1d35e2fSjeremylt   CeedInt elem_size = 2;
12*0acb07cdSJeremy L Thompson   CeedInt num_blk = 2;
13*0acb07cdSJeremy L Thompson   CeedInt blk_size = 5;
14d1d35e2fSjeremylt   CeedInt ind[elem_size*num_elem];
15d1d35e2fSjeremylt   CeedScalar a[num_elem + 1];
16*0acb07cdSJeremy L Thompson   const CeedScalar *xx, *yy;
17*0acb07cdSJeremy L Thompson   CeedInt layout[3];
18be9261b7Sjeremylt   CeedElemRestriction r;
19be9261b7Sjeremylt 
20be9261b7Sjeremylt   CeedInit(argv[1], &ceed);
21288c0443SJeremy L Thompson 
22d1d35e2fSjeremylt   CeedVectorCreate(ceed, num_elem+1, &x);
23d1d35e2fSjeremylt   for (CeedInt i=0; i<num_elem+1; i++)
24288c0443SJeremy L Thompson     a[i] = 10 + i;
25be9261b7Sjeremylt   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
26be9261b7Sjeremylt 
27d1d35e2fSjeremylt   for (CeedInt i=0; i<num_elem; i++) {
28*0acb07cdSJeremy L Thompson     ind[2*i+0] = i;
29*0acb07cdSJeremy L Thompson     ind[2*i+1] = i+1;
30be9261b7Sjeremylt   }
31d1d35e2fSjeremylt   CeedElemRestrictionCreateBlocked(ceed, num_elem, elem_size, blk_size, 1, 1,
32*0acb07cdSJeremy L Thompson                                    num_elem+1, CEED_MEM_HOST, CEED_USE_POINTER,
33*0acb07cdSJeremy L Thompson                                    ind, &r);
34d1d35e2fSjeremylt   CeedVectorCreate(ceed, blk_size*elem_size, &y);
35be9261b7Sjeremylt   CeedVectorSetValue(y, 0); // Allocates array
36be9261b7Sjeremylt 
37be9261b7Sjeremylt   // NoTranspose
38a8d32208Sjeremylt   CeedElemRestrictionApplyBlock(r, 1, CEED_NOTRANSPOSE, x, y,
39be9261b7Sjeremylt                                 CEED_REQUEST_IMMEDIATE);
40*0acb07cdSJeremy L Thompson   CeedVectorGetArrayRead(y, CEED_MEM_HOST, &yy);
41*0acb07cdSJeremy L Thompson   CeedElemRestrictionGetELayout(r, &layout);
42*0acb07cdSJeremy L Thompson   for (CeedInt i=0; i<elem_size; i++)             // Node
43*0acb07cdSJeremy L Thompson     for (CeedInt j=0; j<1; j++)                   // Component
44*0acb07cdSJeremy L Thompson       for (CeedInt k=blk_size; k<num_elem; k++) { // Element
45*0acb07cdSJeremy L Thompson         CeedInt block = k / blk_size;
46*0acb07cdSJeremy L Thompson         CeedInt elem = k % blk_size;
47*0acb07cdSJeremy L Thompson         CeedInt index = (i*blk_size+elem)*layout[0] + j*layout[1]*blk_size +
48*0acb07cdSJeremy L Thompson                         block*layout[2]*blk_size - blk_size*elem_size;
49*0acb07cdSJeremy L Thompson         if (yy[index] != a[ind[k*elem_size + i]])
50*0acb07cdSJeremy L Thompson           // LCOV_EXCL_START
51*0acb07cdSJeremy L Thompson           printf("Error in restricted array y[%d][%d][%d] = %f\n",
52*0acb07cdSJeremy L Thompson                  i, j, k, (double)yy[index]);
53*0acb07cdSJeremy L Thompson         // LCOV_EXCL_STOP
54db10e42cSDavid Medina       }
55*0acb07cdSJeremy L Thompson   CeedVectorRestoreArrayRead(y, &yy);
56be9261b7Sjeremylt 
57be9261b7Sjeremylt   // Transpose
58*0acb07cdSJeremy L Thompson   CeedVectorSetValue(x, 0);
59a8d32208Sjeremylt   CeedElemRestrictionApplyBlock(r, 1, CEED_TRANSPOSE, y, x,
60be9261b7Sjeremylt                                 CEED_REQUEST_IMMEDIATE);
61*0acb07cdSJeremy L Thompson   CeedVectorGetArrayRead(x, CEED_MEM_HOST, &xx);
62*0acb07cdSJeremy L Thompson   for (CeedInt i=blk_size; i<num_elem+1; i++)
63*0acb07cdSJeremy L Thompson     if (xx[i] != (10+i)*(i > blk_size && i < num_elem ? 2.0 : 1.0))
64*0acb07cdSJeremy L Thompson       // LCOV_EXCL_START
65*0acb07cdSJeremy L Thompson       printf("Error in restricted array x[%d] = %f\n",
66*0acb07cdSJeremy L Thompson              i, (double)xx[i]);
67*0acb07cdSJeremy L Thompson   // LCOV_EXCL_STOP
68*0acb07cdSJeremy L Thompson   CeedVectorRestoreArrayRead(x, &xx);
69be9261b7Sjeremylt 
70be9261b7Sjeremylt   CeedVectorDestroy(&x);
71be9261b7Sjeremylt   CeedVectorDestroy(&y);
72be9261b7Sjeremylt   CeedElemRestrictionDestroy(&r);
73be9261b7Sjeremylt   CeedDestroy(&ceed);
74be9261b7Sjeremylt   return 0;
75be9261b7Sjeremylt }
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