xref: /libCEED/tests/t205-elemrestriction.c (revision 2b730f8b5a9c809740a0b3b302db43a719c636b1)
173d26085Sjeremylt /// @file
273d26085Sjeremylt /// Test creation, use, and destruction of an interlaced multicomponent element restriction
373d26085Sjeremylt /// \test Test creation, use, and destruction of an interlaced multicomponent element restriction
473d26085Sjeremylt #include <ceed.h>
5ec3da8bcSJed Brown #include <ceed/backend.h>
673d26085Sjeremylt 
773d26085Sjeremylt int main(int argc, char **argv) {
873d26085Sjeremylt   Ceed                ceed;
973d26085Sjeremylt   CeedVector          x, y;
10d1d35e2fSjeremylt   CeedInt             num_elem = 3;
11d1d35e2fSjeremylt   CeedInt             ind[2 * num_elem];
1249fd234cSJeremy L Thompson   CeedInt             layout[3];
13d1d35e2fSjeremylt   CeedScalar          a[2 * (num_elem + 1)];
1473d26085Sjeremylt   const CeedScalar   *yy;
1573d26085Sjeremylt   CeedElemRestriction r;
1673d26085Sjeremylt 
1773d26085Sjeremylt   CeedInit(argv[1], &ceed);
1873d26085Sjeremylt 
1973d26085Sjeremylt   // Setup
20d1d35e2fSjeremylt   CeedVectorCreate(ceed, 2 * (num_elem + 1), &x);
21d1d35e2fSjeremylt   for (CeedInt i = 0; i < num_elem + 1; i++) {
2273d26085Sjeremylt     a[2 * i]     = 10 + i;
2373d26085Sjeremylt     a[2 * i + 1] = 20 + i;
2473d26085Sjeremylt   }
2573d26085Sjeremylt   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
2673d26085Sjeremylt 
27d1d35e2fSjeremylt   for (CeedInt i = 0; i < num_elem; i++) {
28d979a051Sjeremylt     ind[2 * i + 0] = 2 * i;
29d979a051Sjeremylt     ind[2 * i + 1] = 2 * (i + 1);
3073d26085Sjeremylt   }
31*2b730f8bSJeremy L Thompson   CeedElemRestrictionCreate(ceed, num_elem, 2, 2, 1, 2 * (num_elem + 1), CEED_MEM_HOST, CEED_USE_POINTER, ind, &r);
32d1d35e2fSjeremylt   CeedVectorCreate(ceed, 2 * (num_elem * 2), &y);
3373d26085Sjeremylt 
3473d26085Sjeremylt   // Restrict
35a8d32208Sjeremylt   CeedElemRestrictionApply(r, CEED_NOTRANSPOSE, x, y, CEED_REQUEST_IMMEDIATE);
3673d26085Sjeremylt 
3773d26085Sjeremylt   // Check
3873d26085Sjeremylt   CeedVectorGetArrayRead(y, CEED_MEM_HOST, &yy);
3949fd234cSJeremy L Thompson   CeedElemRestrictionGetELayout(r, &layout);
40*2b730f8bSJeremy L Thompson   for (CeedInt i = 0; i < 2; i++) {             // Node
41*2b730f8bSJeremy L Thompson     for (CeedInt j = 0; j < 2; j++) {           // Component
42*2b730f8bSJeremy L Thompson       for (CeedInt k = 0; k < num_elem; k++) {  // Element
43*2b730f8bSJeremy L Thompson         if (yy[i * layout[0] + j * layout[1] + k * layout[2]] != a[ind[i + k * 2] + j]) {
44a2546046Sjeremylt           // LCOV_EXCL_START
45*2b730f8bSJeremy L Thompson           printf("Error in restricted array y[%" CeedInt_FMT "][%" CeedInt_FMT "][%" CeedInt_FMT "] = %f != %f\n", i, j, k,
46*2b730f8bSJeremy L Thompson                  (CeedScalar)yy[i * layout[0] + j * layout[1] + k * layout[2]], a[ind[i + k * 2] + j * (num_elem + 1)]);
47de996c55Sjeremylt           // LCOV_EXCL_STOP
48*2b730f8bSJeremy L Thompson         }
49*2b730f8bSJeremy L Thompson       }
50*2b730f8bSJeremy L Thompson     }
51*2b730f8bSJeremy L Thompson   }
5273d26085Sjeremylt 
5373d26085Sjeremylt   CeedVectorRestoreArrayRead(y, &yy);
5473d26085Sjeremylt   CeedVectorDestroy(&x);
5573d26085Sjeremylt   CeedVectorDestroy(&y);
5673d26085Sjeremylt   CeedElemRestrictionDestroy(&r);
5773d26085Sjeremylt   CeedDestroy(&ceed);
5873d26085Sjeremylt   return 0;
5973d26085Sjeremylt }
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