xref: /libCEED/tests/t202-elemrestriction.c (revision 57c64913cb6f06c2f6a40825dd942ceba0d2fe12)
1*57c64913Sjeremylt // Test creation, use, and destruction of a blocked element restriction
2*57c64913Sjeremylt #include <ceed.h>
3*57c64913Sjeremylt 
4*57c64913Sjeremylt int main(int argc, char **argv) {
5*57c64913Sjeremylt   Ceed ceed;
6*57c64913Sjeremylt   CeedVector x, y;
7*57c64913Sjeremylt   CeedInt ne = 8;
8*57c64913Sjeremylt   CeedInt blksize = 5;
9*57c64913Sjeremylt   CeedInt ind[2*ne];
10*57c64913Sjeremylt   CeedScalar a[ne+1];
11*57c64913Sjeremylt   CeedElemRestriction r;
12*57c64913Sjeremylt 
13*57c64913Sjeremylt   CeedInit(argv[1], &ceed);
14*57c64913Sjeremylt   CeedVectorCreate(ceed, ne+1, &x);
15*57c64913Sjeremylt   for (CeedInt i=0; i<ne+1; i++) a[i] = 10 + i;
16*57c64913Sjeremylt   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
17*57c64913Sjeremylt 
18*57c64913Sjeremylt   for (CeedInt i=0; i<ne; i++) {
19*57c64913Sjeremylt     ind[2*i+0] = i;
20*57c64913Sjeremylt     ind[2*i+1] = i+1;
21*57c64913Sjeremylt   }
22*57c64913Sjeremylt   CeedElemRestrictionCreateBlocked(ceed, ne, 2, blksize, ne+1, 1, CEED_MEM_HOST,
23*57c64913Sjeremylt                                    CEED_USE_POINTER, ind, &r);
24*57c64913Sjeremylt   CeedVectorCreate(ceed, 2*blksize*2, &y);
25*57c64913Sjeremylt   CeedVectorSetArray(y, CEED_MEM_HOST, CEED_COPY_VALUES, NULL); // Allocates array
26*57c64913Sjeremylt 
27*57c64913Sjeremylt   // NoTranspose
28*57c64913Sjeremylt   CeedElemRestrictionApply(r, CEED_NOTRANSPOSE, CEED_NOTRANSPOSE, x, y,
29*57c64913Sjeremylt                            CEED_REQUEST_IMMEDIATE);
30*57c64913Sjeremylt   CeedVectorView(y, "%12.8f", stdout);
31*57c64913Sjeremylt 
32*57c64913Sjeremylt   // Transpose
33*57c64913Sjeremylt   CeedVectorGetArray(x, CEED_MEM_HOST, (CeedScalar **)&a);
34*57c64913Sjeremylt   for (CeedInt i=0; i<ne+1; i++) a[i] = 0;
35*57c64913Sjeremylt   CeedVectorRestoreArray(x, (CeedScalar **)&a);
36*57c64913Sjeremylt   CeedElemRestrictionApply(r, CEED_TRANSPOSE, CEED_NOTRANSPOSE, y, x,
37*57c64913Sjeremylt                            CEED_REQUEST_IMMEDIATE);
38*57c64913Sjeremylt   CeedVectorView(x, "%12.8f", stdout);
39*57c64913Sjeremylt 
40*57c64913Sjeremylt   CeedVectorDestroy(&x);
41*57c64913Sjeremylt   CeedVectorDestroy(&y);
42*57c64913Sjeremylt   CeedElemRestrictionDestroy(&r);
43*57c64913Sjeremylt   CeedDestroy(&ceed);
44*57c64913Sjeremylt   return 0;
45*57c64913Sjeremylt }
46