1 /// @file 2 /// Test interpolation with a 2D Simplex non-tensor H1 basis 3 /// \test Test interpolaton with a 2D Simplex non-tensor H1 basis 4 #include <ceed.h> 5 #include <math.h> 6 #include "t310-basis.h" 7 8 double feval(double x1, double x2) { 9 return x1*x1 + x2*x2 + x1*x2 + 1; 10 } 11 12 int main(int argc, char **argv) { 13 Ceed ceed; 14 const CeedInt P = 6, Q = 4, dim = 2; 15 CeedBasis b; 16 CeedScalar qref[dim*Q], qweight[Q]; 17 CeedScalar interp[P*Q], grad[dim*P*Q]; 18 CeedScalar xq[] = {0.2, 0.6, 1./3., 0.2, 0.2, 0.2, 1./3., 0.6}; 19 CeedScalar xr[] = {0., 0.5, 1., 0., 0.5, 0., 0., 0., 0., 0.5, 0.5, 1.}; 20 CeedScalar in[P], out[Q], value; 21 22 buildmats(qref, qweight, interp, grad); 23 24 CeedInit(argv[1], &ceed); 25 CeedBasisCreateH1(ceed, CEED_TRIANGLE, 1, P, Q, interp, grad, qref, qweight, 26 &b); 27 28 // Interpolate function to quadrature points 29 for (int i=0; i<P; i++) 30 in[i] = feval(xr[0*P+i], xr[1*P+i]); 31 CeedBasisApply(b, 1, CEED_NOTRANSPOSE, CEED_EVAL_INTERP, in, out); 32 33 // Check values at quadrature points 34 for (int i=0; i<Q; i++) { 35 value = feval(xq[0*Q+i], xq[1*Q+i]); 36 if (fabs(out[i] - value) > 1e-10) 37 printf("[%d] %f != %f\n", i, out[i], value); 38 } 39 40 CeedBasisDestroy(&b); 41 CeedDestroy(&ceed); 42 return 0; 43 } 44