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MFEM
v4.5.2
Finite element discretization library
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MFEM
v4.5.2
Finite element discretization library
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#include <extrapolator.hpp>
Public Types | |
| enum | AdvectionMode { HO, LO } |
 Public Types inherited from mfem::TimeDependentOperator | |
| enum | Type { EXPLICIT, IMPLICIT, HOMOGENEOUS } |
| enum | EvalMode { NORMAL, ADDITIVE_TERM_1, ADDITIVE_TERM_2 } |
| Evaluation mode. See SetEvalMode() for details. More... | |
| Public Types inherited from mfem::Operator | |
| enum | DiagonalPolicy { DIAG_ZERO, DIAG_ONE, DIAG_KEEP } |
| Defines operator diagonal policy upon elimination of rows and/or columns. More... | |
| enum | Type { ANY_TYPE, MFEM_SPARSEMAT, Hypre_ParCSR, PETSC_MATAIJ, PETSC_MATIS, PETSC_MATSHELL, PETSC_MATNEST, PETSC_MATHYPRE, PETSC_MATGENERIC, Complex_Operator, MFEM_ComplexSparseMat, Complex_Hypre_ParCSR, Complex_DenseMat, MFEM_Block_Matrix, MFEM_Block_Operator } |
| Enumeration defining IDs for some classes derived from Operator. More... | |
Public Member Functions | |
| AdvectionOper (Array< bool > &zones, ParBilinearForm &Mbf, ParBilinearForm &Kbf, const Vector &rhs) | |
| ~AdvectionOper () | |
| virtual void | Mult (const Vector &x, Vector &dx) const |
| Perform the action of the operator: y = k = f(x, t), where k solves the algebraic equation F(x, k, t) = G(x, t) and t is the current time. More... | |
| Public Member Functions inherited from mfem::TimeDependentOperator | |
| TimeDependentOperator (int n=0, double t_=0.0, Type type_=EXPLICIT) | |
| Construct a "square" TimeDependentOperator y = f(x,t), where x and y have the same dimension n. More... | |
| TimeDependentOperator (int h, int w, double t_=0.0, Type type_=EXPLICIT) | |
| Construct a TimeDependentOperator y = f(x,t), where x and y have dimensions w and h, respectively. More... | |
| virtual double | GetTime () const |
| Read the currently set time. More... | |
| virtual void | SetTime (const double t_) |
| Set the current time. More... | |
| bool | isExplicit () const |
| True if type is EXPLICIT. More... | |
| bool | isImplicit () const |
| True if type is IMPLICIT or HOMOGENEOUS. More... | |
| bool | isHomogeneous () const |
| True if type is HOMOGENEOUS. More... | |
| EvalMode | GetEvalMode () const |
| Return the current evaluation mode. See SetEvalMode() for details. More... | |
| virtual void | SetEvalMode (const EvalMode new_eval_mode) |
| Set the evaluation mode of the time-dependent operator. More... | |
| virtual void | ExplicitMult (const Vector &x, Vector &y) const |
| Perform the action of the explicit part of the operator, G: y = G(x, t) where t is the current time. More... | |
| virtual void | ImplicitMult (const Vector &x, const Vector &k, Vector &y) const |
| Perform the action of the implicit part of the operator, F: y = F(x, k, t) where t is the current time. More... | |
| virtual void | ImplicitSolve (const double dt, const Vector &x, Vector &k) |
| Solve the equation: k = f(x + dt k, t), for the unknown k at the current time t. More... | |
| virtual Operator & | GetImplicitGradient (const Vector &x, const Vector &k, double shift) const |
| Return an Operator representing (dF/dk shift + dF/dx) at the given x, k, and the currently set time. More... | |
| virtual Operator & | GetExplicitGradient (const Vector &x) const |
| Return an Operator representing dG/dx at the given point x and the currently set time. More... | |
| virtual int | SUNImplicitSetup (const Vector &x, const Vector &fx, int jok, int *jcur, double gamma) |
| Setup the ODE linear system \( A(x,t) = (I - gamma J) \) or \( A = (M - gamma J) \), where \( J(x,t) = \frac{df}{dt(x,t)} \). More... | |
| virtual int | SUNImplicitSolve (const Vector &b, Vector &x, double tol) |
| Solve the ODE linear system \( A x = b \) as setup by the method SUNImplicitSetup(). More... | |
| virtual int | SUNMassSetup () |
| Setup the mass matrix in the ODE system \( M y' = f(y,t) \) . More... | |
| virtual int | SUNMassSolve (const Vector &b, Vector &x, double tol) |
| Solve the mass matrix linear system \( M x = b \) as setup by the method SUNMassSetup(). More... | |
| virtual int | SUNMassMult (const Vector &x, Vector &v) |
| Compute the mass matrix-vector product \( v = M x \) . More... | |
| virtual | ~TimeDependentOperator () |
| Public Member Functions inherited from mfem::Operator | |
| void | InitTVectors (const Operator *Po, const Operator *Ri, const Operator *Pi, Vector &x, Vector &b, Vector &X, Vector &B) const |
| Initializes memory for true vectors of linear system. More... | |
| Operator (int s=0) | |
| Construct a square Operator with given size s (default 0). More... | |
| Operator (int h, int w) | |
| Construct an Operator with the given height (output size) and width (input size). More... | |
| int | Height () const |
| Get the height (size of output) of the Operator. Synonym with NumRows(). More... | |
| int | NumRows () const |
| Get the number of rows (size of output) of the Operator. Synonym with Height(). More... | |
| int | Width () const |
| Get the width (size of input) of the Operator. Synonym with NumCols(). More... | |
| int | NumCols () const |
| Get the number of columns (size of input) of the Operator. Synonym with Width(). More... | |
| virtual MemoryClass | GetMemoryClass () const |
| Return the MemoryClass preferred by the Operator. More... | |
| virtual void | MultTranspose (const Vector &x, Vector &y) const |
Action of the transpose operator: y=A^t(x). The default behavior in class Operator is to generate an error. More... | |
| virtual void | AddMult (const Vector &x, Vector &y, const double a=1.0) const |
Operator application: y+=A(x) (default) or y+=a*A(x). More... | |
| virtual void | AddMultTranspose (const Vector &x, Vector &y, const double a=1.0) const |
Operator transpose application: y+=A^t(x) (default) or y+=a*A^t(x). More... | |
| virtual void | ArrayMult (const Array< const Vector *> &X, Array< Vector *> &Y) const |
Operator application on a matrix: Y=A(X). More... | |
| virtual void | ArrayMultTranspose (const Array< const Vector *> &X, Array< Vector *> &Y) const |
Action of the transpose operator on a matrix: Y=A^t(X). More... | |
| virtual void | ArrayAddMult (const Array< const Vector *> &X, Array< Vector *> &Y, const double a=1.0) const |
Operator application on a matrix: Y+=A(X) (default) or Y+=a*A(X). More... | |
| virtual void | ArrayAddMultTranspose (const Array< const Vector *> &X, Array< Vector *> &Y, const double a=1.0) const |
Operator transpose application on a matrix: Y+=A^t(X) (default) or Y+=a*A^t(X). More... | |
| virtual Operator & | GetGradient (const Vector &x) const |
| Evaluate the gradient operator at the point x. The default behavior in class Operator is to generate an error. More... | |
| virtual void | AssembleDiagonal (Vector &diag) const |
| Computes the diagonal entries into diag. Typically, this operation only makes sense for linear Operators. In some cases, only an approximation of the diagonal is computed. More... | |
| virtual const Operator * | GetProlongation () const |
Prolongation operator from linear algebra (linear system) vectors, to input vectors for the operator. NULL means identity. More... | |
| virtual const Operator * | GetRestriction () const |
Restriction operator from input vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More... | |
| virtual const Operator * | GetOutputProlongation () const |
Prolongation operator from linear algebra (linear system) vectors, to output vectors for the operator. NULL means identity. More... | |
| virtual const Operator * | GetOutputRestrictionTranspose () const |
| Transpose of GetOutputRestriction, directly available in this form to facilitate matrix-free RAP-type operators. More... | |
| virtual const Operator * | GetOutputRestriction () const |
Restriction operator from output vectors for the operator to linear algebra (linear system) vectors. NULL means identity. More... | |
| void | FormLinearSystem (const Array< int > &ess_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B, int copy_interior=0) |
| Form a constrained linear system using a matrix-free approach. More... | |
| void | FormRectangularLinearSystem (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Vector &x, Vector &b, Operator *&A, Vector &X, Vector &B) |
| Form a column-constrained linear system using a matrix-free approach. More... | |
| virtual void | RecoverFEMSolution (const Vector &X, const Vector &b, Vector &x) |
| Reconstruct a solution vector x (e.g. a GridFunction) from the solution X of a constrained linear system obtained from Operator::FormLinearSystem() or Operator::FormRectangularLinearSystem(). More... | |
| void | FormSystemOperator (const Array< int > &ess_tdof_list, Operator *&A) |
| Return in A a parallel (on truedofs) version of this square operator. More... | |
| void | FormRectangularSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, Operator *&A) |
| Return in A a parallel (on truedofs) version of this rectangular operator (including constraints). More... | |
| void | FormDiscreteOperator (Operator *&A) |
| Return in A a parallel (on truedofs) version of this rectangular operator. More... | |
| void | PrintMatlab (std::ostream &out, int n, int m=0) const |
| Prints operator with input size n and output size m in Matlab format. More... | |
| virtual void | PrintMatlab (std::ostream &out) const |
| Prints operator in Matlab format. More... | |
| virtual | ~Operator () |
| Virtual destructor. More... | |
| Type | GetType () const |
| Return the type ID of the Operator class. More... | |
Public Attributes | |
| enum mfem::AdvectionOper::AdvectionMode | adv_mode = AdvectionOper::HO |
Additional Inherited Members | |
| Protected Member Functions inherited from mfem::Operator | |
| void | FormConstrainedSystemOperator (const Array< int > &ess_tdof_list, ConstrainedOperator *&Aout) |
| see FormSystemOperator() More... | |
| void | FormRectangularConstrainedSystemOperator (const Array< int > &trial_tdof_list, const Array< int > &test_tdof_list, RectangularConstrainedOperator *&Aout) |
| see FormRectangularSystemOperator() More... | |
| Operator * | SetupRAP (const Operator *Pi, const Operator *Po) |
| Returns RAP Operator of this, using input/output Prolongation matrices Pi corresponds to "P", Po corresponds to "Rt". More... | |
| Protected Attributes inherited from mfem::TimeDependentOperator | |
| double | t |
| Current time. More... | |
| Type | type |
| Describes the form of the TimeDependentOperator. More... | |
| EvalMode | eval_mode |
| Current evaluation mode. More... | |
| Protected Attributes inherited from mfem::Operator | |
| int | height |
| Dimension of the output / number of rows in the matrix. More... | |
| int | width |
| Dimension of the input / number of columns in the matrix. More... | |
Definition at line 23 of file extrapolator.hpp.
| Enumerator | |
|---|---|
| HO | |
| LO | |
Definition at line 43 of file extrapolator.hpp.
| mfem::AdvectionOper::AdvectionOper | ( | Array< bool > & | zones, |
| ParBilinearForm & | Mbf, | ||
| ParBilinearForm & | Kbf, | ||
| const Vector & | rhs | ||
| ) |
Definition at line 25 of file extrapolator.cpp.
| mfem::AdvectionOper::~AdvectionOper | ( | ) |
Definition at line 44 of file extrapolator.cpp.
Perform the action of the operator: y = k = f(x, t), where k solves the algebraic equation F(x, k, t) = G(x, t) and t is the current time.
Reimplemented from mfem::TimeDependentOperator.
Definition at line 51 of file extrapolator.cpp.
| enum mfem::AdvectionOper::AdvectionMode mfem::AdvectionOper::adv_mode = AdvectionOper::HO |
1.8.14