1 /// @file 2 /// Test creation creation, action, and destruction for mass matrix operator 3 /// \test Test creation creation, action, and destruction for mass matrix operator 4 #include <ceed.h> 5 #include <stdlib.h> 6 #include <math.h> 7 8 static int setup(void *ctx, CeedInt Q, const CeedScalar *const *in, 9 CeedScalar *const *out) { 10 const CeedScalar *weight = in[0], *dxdX = in[1]; 11 CeedScalar *rho = out[0]; 12 for (CeedInt i=0; i<Q; i++) { 13 rho[i] = weight[i] * dxdX[i]; 14 } 15 return 0; 16 } 17 18 static int mass(void *ctx, CeedInt Q, const CeedScalar *const *in, 19 CeedScalar *const *out) { 20 const CeedScalar *rho = in[0], *u = in[1]; 21 CeedScalar *v = out[0]; 22 for (CeedInt i=0; i<Q; i++) { 23 v[i] = rho[i] * u[i]; 24 } 25 return 0; 26 } 27 28 int main(int argc, char **argv) { 29 Ceed ceed; 30 CeedElemRestriction Erestrictx, Erestrictu, Erestrictxi, Erestrictui; 31 CeedBasis bx, bu; 32 CeedQFunction qf_setup, qf_mass; 33 CeedOperator op_setup, op_mass; 34 CeedVector qdata, X, U, V; 35 const CeedScalar *hv; 36 CeedInt nelem = 15, P = 5, Q = 8; 37 CeedInt Nx = nelem+1, Nu = nelem*(P-1)+1; 38 CeedInt indx[nelem*2], indu[nelem*P]; 39 CeedScalar x[Nx]; 40 CeedScalar sum; 41 42 CeedInit(argv[1], &ceed); 43 for (CeedInt i=0; i<Nx; i++) x[i] = (CeedScalar) i / (Nx - 1); 44 for (CeedInt i=0; i<nelem; i++) { 45 indx[2*i+0] = i; 46 indx[2*i+1] = i+1; 47 } 48 // Restrictions 49 CeedElemRestrictionCreate(ceed, nelem, 2, Nx, 1, CEED_MEM_HOST, 50 CEED_USE_POINTER, indx, &Erestrictx); 51 CeedElemRestrictionCreateIdentity(ceed, nelem, 2, nelem*2, 1, &Erestrictxi); 52 53 for (CeedInt i=0; i<nelem; i++) { 54 for (CeedInt j=0; j<P; j++) { 55 indu[P*i+j] = i*(P-1) + j; 56 } 57 } 58 CeedElemRestrictionCreate(ceed, nelem, P, Nu, 1, CEED_MEM_HOST, 59 CEED_USE_POINTER, indu, &Erestrictu); 60 CeedElemRestrictionCreateIdentity(ceed, nelem, Q, Q*nelem, 1, &Erestrictui); 61 62 // Bases 63 CeedBasisCreateTensorH1Lagrange(ceed, 1, 1, 2, Q, CEED_GAUSS, &bx); 64 CeedBasisCreateTensorH1Lagrange(ceed, 1, 1, P, Q, CEED_GAUSS, &bu); 65 66 // QFunctions 67 CeedQFunctionCreateInterior(ceed, 1, setup, __FILE__ ":setup", &qf_setup); 68 CeedQFunctionAddInput(qf_setup, "_weight", 1, CEED_EVAL_WEIGHT); 69 CeedQFunctionAddInput(qf_setup, "x", 1, CEED_EVAL_GRAD); 70 CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE); 71 72 CeedQFunctionCreateInterior(ceed, 1, mass, __FILE__ ":mass", &qf_mass); 73 CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE); 74 CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP); 75 CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP); 76 77 // Operators 78 CeedOperatorCreate(ceed, qf_setup, NULL, NULL, &op_setup); 79 80 CeedOperatorCreate(ceed, qf_mass, NULL, NULL, &op_mass); 81 82 CeedVectorCreate(ceed, Nx, &X); 83 CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x); 84 CeedVectorCreate(ceed, nelem*Q, &qdata); 85 86 CeedOperatorSetField(op_setup, "_weight", Erestrictxi, CEED_NOTRANSPOSE, 87 bx, CEED_VECTOR_NONE); 88 CeedOperatorSetField(op_setup, "x", Erestrictx, CEED_NOTRANSPOSE, 89 bx, CEED_VECTOR_ACTIVE); 90 CeedOperatorSetField(op_setup, "rho", Erestrictui, CEED_NOTRANSPOSE, 91 CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE); 92 93 CeedOperatorSetField(op_mass, "rho", Erestrictui, CEED_NOTRANSPOSE, 94 CEED_BASIS_COLLOCATED, qdata); 95 CeedOperatorSetField(op_mass, "u", Erestrictu, CEED_NOTRANSPOSE, 96 bu, CEED_VECTOR_ACTIVE); 97 CeedOperatorSetField(op_mass, "v", Erestrictu, CEED_NOTRANSPOSE, 98 bu, CEED_VECTOR_ACTIVE); 99 100 CeedOperatorApply(op_setup, X, qdata, CEED_REQUEST_IMMEDIATE); 101 102 CeedVectorCreate(ceed, Nu, &U); 103 CeedVectorSetValue(U, 1.0); 104 CeedVectorCreate(ceed, Nu, &V); 105 CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE); 106 107 // Check output 108 CeedVectorGetArrayRead(V, CEED_MEM_HOST, &hv); 109 sum = 0.; 110 for (CeedInt i=0; i<Nu; i++) 111 sum += hv[i]; 112 if (fabs(sum-1.)>1e-10) printf("Computed Area: %f != True Area: 1.0\n", sum); 113 CeedVectorRestoreArrayRead(V, &hv); 114 115 CeedQFunctionDestroy(&qf_setup); 116 CeedQFunctionDestroy(&qf_mass); 117 CeedOperatorDestroy(&op_setup); 118 CeedOperatorDestroy(&op_mass); 119 CeedElemRestrictionDestroy(&Erestrictu); 120 CeedElemRestrictionDestroy(&Erestrictx); 121 CeedElemRestrictionDestroy(&Erestrictui); 122 CeedElemRestrictionDestroy(&Erestrictxi); 123 CeedBasisDestroy(&bu); 124 CeedBasisDestroy(&bx); 125 CeedVectorDestroy(&X); 126 CeedVectorDestroy(&U); 127 CeedVectorDestroy(&V); 128 CeedVectorDestroy(&qdata); 129 CeedDestroy(&ceed); 130 return 0; 131 } 132