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