xref: /libCEED/tests/t208-elemrestriction.c (revision be9261b744a4f5557a9c58123cb6ee5694c9a713)
1*be9261b7Sjeremylt /// @file
2*be9261b7Sjeremylt /// Test creation, use, and destruction of a blocked element restriction
3*be9261b7Sjeremylt /// \test Test creation, use, and destruction of a blocked element restriction
4*be9261b7Sjeremylt #include <ceed.h>
5*be9261b7Sjeremylt 
6*be9261b7Sjeremylt int main(int argc, char **argv) {
7*be9261b7Sjeremylt   Ceed ceed;
8*be9261b7Sjeremylt   CeedVector x, y;
9*be9261b7Sjeremylt   CeedInt ne = 8;
10*be9261b7Sjeremylt   CeedInt blksize = 5;
11*be9261b7Sjeremylt   CeedInt ind[2*ne];
12*be9261b7Sjeremylt   CeedScalar a[ne+1];
13*be9261b7Sjeremylt   CeedElemRestriction r;
14*be9261b7Sjeremylt 
15*be9261b7Sjeremylt   CeedInit(argv[1], &ceed);
16*be9261b7Sjeremylt   CeedVectorCreate(ceed, ne+1, &x);
17*be9261b7Sjeremylt   for (CeedInt i=0; i<ne+1; i++) a[i] = 10 + i;
18*be9261b7Sjeremylt   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
19*be9261b7Sjeremylt 
20*be9261b7Sjeremylt   for (CeedInt i=0; i<ne; i++) {
21*be9261b7Sjeremylt     ind[2*i+0] = i;
22*be9261b7Sjeremylt     ind[2*i+1] = i+1;
23*be9261b7Sjeremylt   }
24*be9261b7Sjeremylt   CeedElemRestrictionCreateBlocked(ceed, ne, 2, blksize, ne+1, 1, CEED_MEM_HOST,
25*be9261b7Sjeremylt                                    CEED_USE_POINTER, ind, &r);
26*be9261b7Sjeremylt   CeedVectorCreate(ceed, blksize*2, &y);
27*be9261b7Sjeremylt   CeedVectorSetValue(y, 0); // Allocates array
28*be9261b7Sjeremylt 
29*be9261b7Sjeremylt   // NoTranspose
30*be9261b7Sjeremylt   CeedElemRestrictionApplyBlock(r, 1, CEED_NOTRANSPOSE, CEED_NOTRANSPOSE, x, y,
31*be9261b7Sjeremylt                            CEED_REQUEST_IMMEDIATE);
32*be9261b7Sjeremylt   CeedVectorView(y, "%12.8f", stdout);
33*be9261b7Sjeremylt 
34*be9261b7Sjeremylt   // Transpose
35*be9261b7Sjeremylt   CeedVectorGetArray(x, CEED_MEM_HOST, (CeedScalar **)&a);
36*be9261b7Sjeremylt   for (CeedInt i=0; i<ne+1; i++) a[i] = 0;
37*be9261b7Sjeremylt   CeedVectorRestoreArray(x, (CeedScalar **)&a);
38*be9261b7Sjeremylt   CeedElemRestrictionApplyBlock(r, 1, CEED_TRANSPOSE, CEED_NOTRANSPOSE, y, x,
39*be9261b7Sjeremylt                            CEED_REQUEST_IMMEDIATE);
40*be9261b7Sjeremylt   CeedVectorView(x, "%12.8f", stdout);
41*be9261b7Sjeremylt 
42*be9261b7Sjeremylt   CeedVectorDestroy(&x);
43*be9261b7Sjeremylt   CeedVectorDestroy(&y);
44*be9261b7Sjeremylt   CeedElemRestrictionDestroy(&r);
45*be9261b7Sjeremylt   CeedDestroy(&ceed);
46*be9261b7Sjeremylt   return 0;
47*be9261b7Sjeremylt }
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