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 7 //! [QFunction User Code] 8 static int setup(void *ctx, CeedInt Q, const CeedScalar *const *in, 9 CeedScalar *const *out); 10 static int mass(void *ctx, CeedInt Q, const CeedScalar *const *in, 11 CeedScalar *const *out); 12 //! [QFunction User Code] 13 14 static int setup(void *ctx, CeedInt Q, const CeedScalar *const *in, 15 CeedScalar *const *out) { 16 const CeedScalar *weight = in[0], *dxdX = in[1]; 17 CeedScalar *rho = out[0]; 18 for (CeedInt i=0; i<Q; i++) { 19 rho[i] = weight[i] * dxdX[i]; 20 } 21 return 0; 22 } 23 24 static int mass(void *ctx, CeedInt Q, const CeedScalar *const *in, 25 CeedScalar *const *out) { 26 const CeedScalar *rho = in[0], *u = in[1]; 27 CeedScalar *v = out[0]; 28 for (CeedInt i=0; i<Q; i++) { 29 v[i] = rho[i] * u[i]; 30 } 31 return 0; 32 } 33 34 int main(int argc, char **argv) { 35 Ceed ceed; 36 CeedElemRestriction Erestrictx, Erestrictu, Erestrictxi, Erestrictui; 37 CeedBasis bx, bu; 38 CeedQFunction qf_setup, qf_mass; 39 CeedOperator op_setup, op_mass; 40 CeedVector qdata, X, U, V; 41 const CeedScalar *hv; 42 CeedInt nelem = 15, P = 5, Q = 8; 43 CeedInt Nx = nelem+1, Nu = nelem*(P-1)+1; 44 CeedInt indx[nelem*2], indu[nelem*P]; 45 CeedScalar x[Nx]; 46 47 //! [Ceed Init] 48 CeedInit(argv[1], &ceed); 49 //! [Ceed Init] 50 for (CeedInt i=0; i<Nx; i++) x[i] = (CeedScalar) i / (Nx - 1); 51 for (CeedInt i=0; i<nelem; i++) { 52 indx[2*i+0] = i; 53 indx[2*i+1] = i+1; 54 } 55 //! [ElemRestr Create] 56 CeedElemRestrictionCreate(ceed, nelem, 2, Nx, 1, CEED_MEM_HOST, 57 CEED_USE_POINTER, indx, &Erestrictx); 58 CeedElemRestrictionCreateIdentity(ceed, nelem, 2, nelem*2, 1, &Erestrictxi); 59 //! [ElemRestr Create] 60 61 for (CeedInt i=0; i<nelem; i++) { 62 for (CeedInt j=0; j<P; j++) { 63 indu[P*i+j] = i*(P-1) + j; 64 } 65 } 66 //! [ElemRestrU Create] 67 CeedElemRestrictionCreate(ceed, nelem, P, Nu, 1, CEED_MEM_HOST, 68 CEED_USE_POINTER, indu, &Erestrictu); 69 CeedElemRestrictionCreateIdentity(ceed, nelem, Q, Q*nelem, 1, &Erestrictui); 70 //! [ElemRestrU Create] 71 72 //! [Basis Create] 73 CeedBasisCreateTensorH1Lagrange(ceed, 1, 1, 2, Q, CEED_GAUSS, &bx); 74 CeedBasisCreateTensorH1Lagrange(ceed, 1, 1, P, Q, CEED_GAUSS, &bu); 75 //! [Basis Create] 76 77 //! [QFunction Create] 78 CeedQFunctionCreateInterior(ceed, 1, setup, __FILE__ ":setup", &qf_setup); 79 CeedQFunctionAddInput(qf_setup, "_weight", 1, CEED_EVAL_WEIGHT); 80 CeedQFunctionAddInput(qf_setup, "x", 1, CEED_EVAL_GRAD); 81 CeedQFunctionAddOutput(qf_setup, "rho", 1, CEED_EVAL_NONE); 82 83 CeedQFunctionCreateInterior(ceed, 1, mass, __FILE__ ":mass", &qf_mass); 84 CeedQFunctionAddInput(qf_mass, "rho", 1, CEED_EVAL_NONE); 85 CeedQFunctionAddInput(qf_mass, "u", 1, CEED_EVAL_INTERP); 86 CeedQFunctionAddOutput(qf_mass, "v", 1, CEED_EVAL_INTERP); 87 //! [QFunction Create] 88 89 //! [Setup Create] 90 CeedOperatorCreate(ceed, qf_setup, NULL, NULL, &op_setup); 91 //! [Setup Create] 92 93 //! [Operator Create] 94 CeedOperatorCreate(ceed, qf_mass, NULL, NULL, &op_mass); 95 //! [Operator Create] 96 97 CeedVectorCreate(ceed, Nx, &X); 98 CeedVectorSetArray(X, CEED_MEM_HOST, CEED_USE_POINTER, x); 99 CeedVectorCreate(ceed, nelem*Q, &qdata); 100 101 //! [Setup Set] 102 CeedOperatorSetField(op_setup, "_weight", Erestrictxi, bx, 103 CEED_VECTOR_NONE); 104 CeedOperatorSetField(op_setup, "x", Erestrictx, bx, CEED_VECTOR_ACTIVE); 105 CeedOperatorSetField(op_setup, "rho", Erestrictui, 106 CEED_BASIS_COLLOCATED, CEED_VECTOR_ACTIVE); 107 //! [Setup Set] 108 109 //! [Operator Set] 110 CeedOperatorSetField(op_mass, "rho", Erestrictui, 111 CEED_BASIS_COLLOCATED, qdata); 112 CeedOperatorSetField(op_mass, "u", Erestrictu, bu, CEED_VECTOR_ACTIVE); 113 CeedOperatorSetField(op_mass, "v", Erestrictu, bu, CEED_VECTOR_ACTIVE); 114 //! [Operator Set] 115 116 //! [Setup Apply] 117 CeedOperatorApply(op_setup, X, qdata, CEED_REQUEST_IMMEDIATE); 118 //! [Setup Apply] 119 120 CeedVectorCreate(ceed, Nu, &U); 121 CeedVectorSetValue(U, 0.0); 122 CeedVectorCreate(ceed, Nu, &V); 123 //! [Operator Apply] 124 CeedOperatorApply(op_mass, U, V, CEED_REQUEST_IMMEDIATE); 125 //! [Operator Apply] 126 127 CeedVectorGetArrayRead(V, CEED_MEM_HOST, &hv); 128 for (CeedInt i=0; i<Nu; i++) 129 if (hv[i] != 0.0) printf("[%d] v %g != 0.0\n",i, hv[i]); 130 CeedVectorRestoreArrayRead(V, &hv); 131 132 CeedQFunctionDestroy(&qf_setup); 133 CeedQFunctionDestroy(&qf_mass); 134 CeedOperatorDestroy(&op_setup); 135 CeedOperatorDestroy(&op_mass); 136 CeedElemRestrictionDestroy(&Erestrictu); 137 CeedElemRestrictionDestroy(&Erestrictx); 138 CeedElemRestrictionDestroy(&Erestrictui); 139 CeedElemRestrictionDestroy(&Erestrictxi); 140 CeedBasisDestroy(&bu); 141 CeedBasisDestroy(&bx); 142 CeedVectorDestroy(&X); 143 CeedVectorDestroy(&U); 144 CeedVectorDestroy(&V); 145 CeedVectorDestroy(&qdata); 146 CeedDestroy(&ceed); 147 return 0; 148 } 149