xref: /libCEED/tests/t207-elemrestriction.c (revision 2b730f8b5a9c809740a0b3b302db43a719c636b1)
173d26085Sjeremylt /// @file
273d26085Sjeremylt /// Test creation, transpose use, and destruction of an interlaced multicomponent element restriction
373d26085Sjeremylt /// \test Test creation, transpose 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 = 5;
11d1d35e2fSjeremylt   CeedInt             ind[2 * num_elem];
1249fd234cSJeremy L Thompson   CeedInt             layout[3];
1349fd234cSJeremy L Thompson   CeedScalar          mult;
14d1d35e2fSjeremylt   CeedScalar          a[2 * (num_elem * 2)];
1573d26085Sjeremylt   const CeedScalar   *yy;
1673d26085Sjeremylt   CeedElemRestriction r;
1773d26085Sjeremylt 
1873d26085Sjeremylt   CeedInit(argv[1], &ceed);
1973d26085Sjeremylt 
2073d26085Sjeremylt   // Setup
21d1d35e2fSjeremylt   CeedVectorCreate(ceed, 2 * (num_elem * 2), &x);
2273d26085Sjeremylt 
23d1d35e2fSjeremylt   for (CeedInt i = 0; i < num_elem; i++) {
24d979a051Sjeremylt     ind[2 * i + 0] = 2 * i;
25d979a051Sjeremylt     ind[2 * i + 1] = 2 * (i + 1);
2673d26085Sjeremylt   }
27*2b730f8bSJeremy L Thompson   CeedElemRestrictionCreate(ceed, num_elem, 2, 2, 1, 2 * (num_elem + 1), CEED_MEM_HOST, CEED_USE_POINTER, ind, &r);
28d1d35e2fSjeremylt   CeedVectorCreate(ceed, 2 * (num_elem + 1), &y);
2973d26085Sjeremylt   CeedVectorSetValue(y, 0);  // Allocates array
3073d26085Sjeremylt 
3149fd234cSJeremy L Thompson   // Set x data in backend E-layout
3249fd234cSJeremy L Thompson   CeedElemRestrictionGetELayout(r, &layout);
33*2b730f8bSJeremy L Thompson   for (CeedInt i = 0; i < 2; i++) {             // Node
34*2b730f8bSJeremy L Thompson     for (CeedInt j = 0; j < 2; j++) {           // Component
35*2b730f8bSJeremy L Thompson       for (CeedInt k = 0; k < num_elem; k++) {  // Element
3649fd234cSJeremy L Thompson         a[i * layout[0] + j * layout[1] + k * layout[2]] = 10 * j + (2 * k + i + 1) / 2;
37*2b730f8bSJeremy L Thompson       }
38*2b730f8bSJeremy L Thompson     }
39*2b730f8bSJeremy L Thompson   }
4049fd234cSJeremy L Thompson   CeedVectorSetArray(x, CEED_MEM_HOST, CEED_USE_POINTER, a);
4149fd234cSJeremy L Thompson 
4273d26085Sjeremylt   // Restrict
43a8d32208Sjeremylt   CeedElemRestrictionApply(r, CEED_TRANSPOSE, x, y, CEED_REQUEST_IMMEDIATE);
4473d26085Sjeremylt 
4573d26085Sjeremylt   // Check
4673d26085Sjeremylt   CeedVectorGetArrayRead(y, CEED_MEM_HOST, &yy);
47d1d35e2fSjeremylt   for (CeedInt i = 0; i < num_elem + 1; i++) {
48d1d35e2fSjeremylt     mult = i > 0 && i < num_elem ? 2 : 1;
49*2b730f8bSJeremy L Thompson     if (yy[2 * i] != i * mult) {
50a2546046Sjeremylt       // LCOV_EXCL_START
51*2b730f8bSJeremy L Thompson       printf("Error in restricted array y[%" CeedInt_FMT "] = %f != %f\n", 2 * i, (CeedScalar)yy[2 * i], i * mult);
52de996c55Sjeremylt       // LCOV_EXCL_STOP
53*2b730f8bSJeremy L Thompson     }
54*2b730f8bSJeremy L Thompson     if (yy[2 * i + 1] != (10 + i) * mult) {
55a2546046Sjeremylt       // LCOV_EXCL_START
56*2b730f8bSJeremy L Thompson       printf("Error in restricted array y[%" CeedInt_FMT "] = %f != %f\n", 2 * i + 1, (CeedScalar)yy[2 * i + 1], (10. + i) * mult);
57de996c55Sjeremylt       // LCOV_EXCL_STOP
5873d26085Sjeremylt     }
59*2b730f8bSJeremy L Thompson   }
6073d26085Sjeremylt 
6173d26085Sjeremylt   CeedVectorRestoreArrayRead(y, &yy);
6273d26085Sjeremylt   CeedVectorDestroy(&x);
6373d26085Sjeremylt   CeedVectorDestroy(&y);
6473d26085Sjeremylt   CeedElemRestrictionDestroy(&r);
6573d26085Sjeremylt   CeedDestroy(&ceed);
6673d26085Sjeremylt   return 0;
6773d26085Sjeremylt }
68