xref: /libCEED/tests/t202-elemrestriction.c (revision 39b2de37682296be8460181179eb4e44de5cc3de)
1 /// @file
2 /// Test creation, use, and destruction of a blocked element restriction
3 /// \test Test creation, use, and destruction of a blocked element restriction
4 #include <ceed.h>
5 
6 int main(int argc, char **argv) {
7   Ceed ceed;
8   CeedVector x, y;
9   CeedInt ne = 8;
10   CeedInt blksize = 5;
11   CeedInt ind[2*ne];
12   CeedScalar a[ne+1];
13   CeedElemRestriction r;
14 
15   CeedInit(argv[1], &ceed);
16 
17   CeedVectorCreate(ceed, ne+1, &x);
18   for (CeedInt i=0; i<ne+1; i++)
19     a[i] = 10 + i;
20   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
21 
22   for (CeedInt i=0; i<ne; i++) {
23     ind[2*i+0] = i;
24     ind[2*i+1] = i+1;
25   }
26   CeedElemRestrictionCreateBlocked(ceed, ne, 2, blksize, ne+1, 1, CEED_MEM_HOST,
27                                    CEED_USE_POINTER, ind, &r);
28   CeedVectorCreate(ceed, 2*blksize*2, &y);
29   CeedVectorSetValue(y, 0); // Allocates array
30 
31   // NoTranspose
32   CeedElemRestrictionApply(r, CEED_NOTRANSPOSE, CEED_NOTRANSPOSE, x, y,
33                            CEED_REQUEST_IMMEDIATE);
34   CeedVectorView(y, "%12.8f", stdout);
35 
36   // Transpose
37   CeedVectorGetArray(x, CEED_MEM_HOST, (CeedScalar **)&a);
38   for (CeedInt i=0; i<ne+1; i++)
39     a[i] = 0;
40   CeedVectorRestoreArray(x, (CeedScalar **)&a);
41   CeedElemRestrictionApply(r, CEED_TRANSPOSE, CEED_NOTRANSPOSE, y, x,
42                            CEED_REQUEST_IMMEDIATE);
43   CeedVectorView(x, "%12.8f", stdout);
44 
45   CeedVectorDestroy(&x);
46   CeedVectorDestroy(&y);
47   CeedElemRestrictionDestroy(&r);
48   CeedDestroy(&ceed);
49   return 0;
50 }
51