xref: /libCEED/tests/t200-elemrestriction.c (revision a8d322087fa8f150327cdc2bf14a171452b711ec)
14411cf47Sjeremylt /// @file
273d26085Sjeremylt /// Test creation, use, and destruction of an element restriction
373d26085Sjeremylt /// \test Test creation, use, and destruction of an element restriction
457c64913Sjeremylt #include <ceed.h>
557c64913Sjeremylt 
657c64913Sjeremylt int main(int argc, char **argv) {
757c64913Sjeremylt   Ceed ceed;
857c64913Sjeremylt   CeedVector x, y;
957c64913Sjeremylt   CeedInt ne = 3;
1057c64913Sjeremylt   CeedInt ind[2*ne];
1157c64913Sjeremylt   CeedScalar a[ne+1];
1257c64913Sjeremylt   const CeedScalar *yy;
1357c64913Sjeremylt   CeedElemRestriction r;
14*a8d32208Sjeremylt   CeedTransposeMode lmode = CEED_NOTRANSPOSE;
1557c64913Sjeremylt 
1657c64913Sjeremylt   CeedInit(argv[1], &ceed);
17288c0443SJeremy L Thompson 
1857c64913Sjeremylt   CeedVectorCreate(ceed, ne+1, &x);
19288c0443SJeremy L Thompson   for (CeedInt i=0; i<ne+1; i++)
20288c0443SJeremy L Thompson     a[i] = 10 + i;
2157c64913Sjeremylt   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
2257c64913Sjeremylt 
2357c64913Sjeremylt   for (CeedInt i=0; i<ne; i++) {
2457c64913Sjeremylt     ind[2*i+0] = i;
2557c64913Sjeremylt     ind[2*i+1] = i+1;
2657c64913Sjeremylt   }
27*a8d32208Sjeremylt   CeedElemRestrictionCreate(ceed, lmode, ne, 2, ne+1, 1, CEED_MEM_HOST,
28288c0443SJeremy L Thompson                             CEED_USE_POINTER, ind, &r);
2957c64913Sjeremylt   CeedVectorCreate(ceed, ne*2, &y);
3073d26085Sjeremylt   CeedVectorSetValue(y, 0); // Allocates array
31*a8d32208Sjeremylt   CeedElemRestrictionApply(r, CEED_NOTRANSPOSE, x, y, CEED_REQUEST_IMMEDIATE);
32288c0443SJeremy L Thompson 
3357c64913Sjeremylt   CeedVectorGetArrayRead(y, CEED_MEM_HOST, &yy);
34a2546046Sjeremylt   for (CeedInt i=0; i<ne*2; i++)
3557c64913Sjeremylt     if (10+(i+1)/2 != yy[i])
36a2546046Sjeremylt       // LCOV_EXCL_START
37d863ab9bSjeremylt       printf("Error in restricted array y[%d] = %f",
3857c64913Sjeremylt              i, (double)yy[i]);
39de996c55Sjeremylt   // LCOV_EXCL_STOP
4057c64913Sjeremylt   CeedVectorRestoreArrayRead(y, &yy);
41a2546046Sjeremylt 
4257c64913Sjeremylt   CeedVectorDestroy(&x);
4357c64913Sjeremylt   CeedVectorDestroy(&y);
4457c64913Sjeremylt   CeedElemRestrictionDestroy(&r);
4557c64913Sjeremylt   CeedDestroy(&ceed);
4657c64913Sjeremylt   return 0;
4757c64913Sjeremylt }
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