Vector with associated FE space and LinearFormIntegrators. More...

#include <linearform.hpp>

Inheritance diagram for mfem::LinearForm:

Collaboration diagram for mfem::LinearForm:

Public Member Functions
	LinearForm (FiniteElementSpace *f)
	Creates linear form associated with FE space *f. More...

	LinearForm (FiniteElementSpace f, LinearForm lf)
	Create a LinearForm on the FiniteElementSpace f, using the same integrators as the LinearForm lf. More...

	LinearForm ()
	Create an empty LinearForm without an associated FiniteElementSpace. More...

	LinearForm (FiniteElementSpace f, double data)
	Construct a LinearForm using previously allocated array data. More...

LinearForm &	operator= (const LinearForm &rhs)
	Copy assignment. Only the data of the base class Vector is copied. More...

MFEM_DEPRECATED FiniteElementSpace *	GetFES ()
	(DEPRECATED) Return the FE space associated with the LinearForm. More...

FiniteElementSpace *	FESpace ()
	Read+write access to the associated FiniteElementSpace. More...

const FiniteElementSpace *	FESpace () const
	Read-only access to the associated FiniteElementSpace. More...

void	AddDomainIntegrator (LinearFormIntegrator *lfi)
	Adds new Domain Integrator. Assumes ownership of lfi. More...

void	AddDomainIntegrator (LinearFormIntegrator *lfi, Array< int > &elem_marker)

void	AddBoundaryIntegrator (LinearFormIntegrator *lfi)
	Adds new Boundary Integrator. Assumes ownership of lfi. More...

void	AddBoundaryIntegrator (LinearFormIntegrator *lfi, Array< int > &bdr_attr_marker)
	Add new Boundary Integrator, restricted to the given boundary attributes. More...

void	AddBdrFaceIntegrator (LinearFormIntegrator *lfi)
	Adds new Boundary Face Integrator. Assumes ownership of lfi. More...

void	AddBdrFaceIntegrator (LinearFormIntegrator *lfi, Array< int > &bdr_attr_marker)
	Add new Boundary Face Integrator, restricted to the given boundary attributes. More...

void	AddInteriorFaceIntegrator (LinearFormIntegrator *lfi)
	Adds new Interior Face Integrator. Assumes ownership of lfi. More...

Array< LinearFormIntegrator * > *	GetDLFI ()
	Access all integrators added with AddDomainIntegrator() which are not DeltaLFIntegrators or they are DeltaLFIntegrators with non-delta coefficients. More...

Array< Array< int > * > *	GetDLFI_Marker ()
	Access all domain markers added with AddDomainIntegrator(). If no marker was specified when the integrator was added, the corresponding pointer (to Array<int>) will be NULL. More...

Array< DeltaLFIntegrator * > *	GetDLFI_Delta ()
	Access all integrators added with AddDomainIntegrator() which are DeltaLFIntegrators with delta coefficients. More...

Array< LinearFormIntegrator * > *	GetBLFI ()
	Access all integrators added with AddBoundaryIntegrator(). More...

Array< LinearFormIntegrator * > *	GetFLFI ()
	Access all integrators added with AddBdrFaceIntegrator(). More...

Array< LinearFormIntegrator * > *	GetIFLFI ()
	Access all integrators added with AddInteriorFaceIntegrator(). More...

Array< Array< int > * > *	GetFLFI_Marker ()
	Access all boundary markers added with AddBdrFaceIntegrator(). If no marker was specified when the integrator was added, the corresponding pointer (to Array<int>) will be NULL. More...

void	UseFastAssembly (bool use_fa)
	Which assembly algorithm to use: the new device-compatible fast assembly (true), or the legacy CPU-only algorithm (false). More...

void	Assemble ()
	Assembles the linear form i.e. sums over all domain/bdr integrators. More...

virtual bool	SupportsDevice () const
	Return true if assembly on device is supported, false otherwise. More...

void	AssembleDelta ()
	Assembles delta functions of the linear form. More...

void	Update ()
	Update the object according to the associated FE space fes. More...

void	Update (FiniteElementSpace *f)
	Associate a new FE space, f, with this object and Update() it. /. More...

void	Update (FiniteElementSpace *f, Vector &v, int v_offset)
	Associate a new FE space, f, with this object and use the data of v, offset by v_offset*, to initialize this object's Vector::data. More...

virtual void	MakeRef (FiniteElementSpace *f, Vector &v, int v_offset)
	Make the LinearForm reference external data on a new FiniteElementSpace. More...

double	operator() (const GridFunction &gf) const
	Return the action of the LinearForm as a linear mapping. More...

LinearForm &	operator= (double value)
	Redefine '=' for LinearForm = constant. More...

LinearForm &	operator= (const Vector &v)
	Copy the data from v. More...

	~LinearForm ()
	Destroys linear form. More...

Public Member Functions inherited from mfem::Vector
	Vector ()

	Vector (const Vector &)
	Copy constructor. Allocates a new data array and copies the data. More...

	Vector (Vector &&v)
	Move constructor. "Steals" data from its argument. More...

	Vector (int s)
	Creates vector of size s. More...

	Vector (double *data_, int size_)
	Creates a vector referencing an array of doubles, owned by someone else. More...

	Vector (Vector &base, int base_offset, int size_)
	Create a Vector referencing a sub-vector of the Vector base starting at the given offset, base_offset, and size size_. More...

	Vector (int size_, MemoryType mt)
	Create a Vector of size size_ using MemoryType mt. More...

	Vector (int size_, MemoryType h_mt, MemoryType d_mt)
	Create a Vector of size size_ using host MemoryType h_mt and device MemoryType d_mt. More...

template<int N>
	Vector (const double(&values)[N])
	Create a vector using a braced initializer list. More...

virtual void	UseDevice (bool use_dev) const
	Enable execution of Vector operations using the mfem::Device. More...

virtual bool	UseDevice () const
	Return the device flag of the Memory object used by the Vector. More...

void	Load (std::istream *in, int np, int dim)
	Reads a vector from multiple files. More...

void	Load (std::istream &in, int Size)
	Load a vector from an input stream. More...

void	Load (std::istream &in)
	Load a vector from an input stream, reading the size from the stream. More...

void	SetSize (int s)
	Resize the vector to size s. More...

void	SetSize (int s, MemoryType mt)
	Resize the vector to size s using MemoryType mt. More...

void	SetSize (int s, const Vector &v)
	Resize the vector to size s using the MemoryType of v. More...

void	SetData (double *d)

void	SetDataAndSize (double *d, int s)
	Set the Vector data and size. More...

void	NewDataAndSize (double *d, int s)
	Set the Vector data and size, deleting the old data, if owned. More...

void	NewMemoryAndSize (const Memory< double > &mem, int s, bool own_mem)
	Reset the Vector to use the given external Memory mem and size s. More...

void	MakeRef (Vector &base, int offset, int size)
	Reset the Vector to be a reference to a sub-vector of base. More...

void	MakeRef (Vector &base, int offset)
	Reset the Vector to be a reference to a sub-vector of base without changing its current size. More...

void	MakeDataOwner () const
	Set the Vector data (host pointer) ownership flag. More...

void	Destroy ()
	Destroy a vector. More...

void	DeleteDevice (bool copy_to_host=true)
	Delete the device pointer, if owned. If copy_to_host is true and the data is valid only on device, move it to host before deleting. Invalidates the device memory. More...

int	Size () const
	Returns the size of the vector. More...

int	Capacity () const
	Return the size of the currently allocated data array. More...

double *	GetData () const
	Return a pointer to the beginning of the Vector data. More...

MFEM_DEPRECATED	operator double * ()
	Conversion to `double *`. Deprecated. More...

MFEM_DEPRECATED	operator const double * () const
	Conversion to `const double *`. Deprecated. More...

double *	begin ()
	STL-like begin. More...

double *	end ()
	STL-like end. More...

const double *	begin () const
	STL-like begin (const version). More...

const double *	end () const
	STL-like end (const version). More...

Memory< double > &	GetMemory ()
	Return a reference to the Memory object used by the Vector. More...

const Memory< double > &	GetMemory () const
	Return a reference to the Memory object used by the Vector, const version. More...

void	SyncMemory (const Vector &v) const
	Update the memory location of the vector to match v. More...

void	SyncAliasMemory (const Vector &v) const
	Update the alias memory location of the vector to match v. More...

bool	OwnsData () const
	Read the Vector data (host pointer) ownership flag. More...

void	StealData (double **p)
	Changes the ownership of the data; after the call the Vector is empty. More...

double *	StealData ()
	Changes the ownership of the data; after the call the Vector is empty. More...

double &	Elem (int i)
	Access Vector entries. Index i = 0 .. size-1. More...

const double &	Elem (int i) const
	Read only access to Vector entries. Index i = 0 .. size-1. More...

double &	operator() (int i)
	Access Vector entries using () for 0-based indexing. More...

const double &	operator() (int i) const
	Read only access to Vector entries using () for 0-based indexing. More...

double &	operator[] (int i)
	Access Vector entries using [] for 0-based indexing. More...

const double &	operator[] (int i) const
	Read only access to Vector entries using [] for 0-based indexing. More...

double	operator* (const double *) const
	Dot product with a `double *` array. More...

double	operator* (const Vector &v) const
	Return the inner-product. More...

Vector &	operator= (const double *v)
	Copy Size() entries from v. More...

Vector &	operator= (const Vector &v)
	Copy assignment. More...

Vector &	operator= (Vector &&v)
	Move assignment. More...

Vector &	operator= (double value)
	Redefine '=' for vector = constant. More...

Vector &	operator*= (double c)

Vector &	operator*= (const Vector &v)
	Component-wise scaling: (this)(i) = v(i) More...

Vector &	operator/= (double c)

Vector &	operator/= (const Vector &v)
	Component-wise division: (*this)(i) /= v(i) More...

Vector &	operator-= (double c)

Vector &	operator-= (const Vector &v)

Vector &	operator+= (double c)

Vector &	operator+= (const Vector &v)

Vector &	Add (const double a, const Vector &Va)
	(this) += a Va More...

Vector &	Set (const double a, const Vector &x)
	(this) = a x More...

void	SetVector (const Vector &v, int offset)

void	AddSubVector (const Vector &v, int offset)

void	Neg ()
	(this) = -(this) More...

void	Reciprocal ()
	(this)(i) = 1.0 / (this)(i) More...

void	Swap (Vector &other)
	Swap the contents of two Vectors. More...

void	cross3D (const Vector &vin, Vector &vout) const

void	median (const Vector &lo, const Vector &hi)
	v = median(v,lo,hi) entrywise. Implementation assumes lo <= hi. More...

void	GetSubVector (const Array< int > &dofs, Vector &elemvect) const
	Extract entries listed in dofs to the output Vector elemvect. More...

void	GetSubVector (const Array< int > &dofs, double *elem_data) const
	Extract entries listed in dofs to the output array elem_data. More...

void	SetSubVector (const Array< int > &dofs, const double value)
	Set the entries listed in dofs to the given value. More...

void	SetSubVector (const Array< int > &dofs, const Vector &elemvect)
	Set the entries listed in dofs to the values given in the elemvect Vector. Negative dof values cause the -dof-1 position in this Vector to receive the -val from elemvect. More...

void	SetSubVector (const Array< int > &dofs, double *elem_data)
	Set the entries listed in dofs to the values given the , elem_data array. Negative dof values cause the -dof-1 position in this Vector to receive the -val from elem_data. More...

void	AddElementVector (const Array< int > &dofs, const Vector &elemvect)
	Add elements of the elemvect Vector to the entries listed in dofs. Negative dof values cause the -dof-1 position in this Vector to add the -val from elemvect. More...

void	AddElementVector (const Array< int > &dofs, double *elem_data)
	Add elements of the elem_data array to the entries listed in dofs. Negative dof values cause the -dof-1 position in this Vector to add the -val from elem_data. More...

void	AddElementVector (const Array< int > &dofs, const double a, const Vector &elemvect)
	Add times the elements of the elemvect Vector to the entries listed in dofs. Negative dof values cause the -dof-1 position in this Vector to add the -aval from elemvect*. More...

void	SetSubVectorComplement (const Array< int > &dofs, const double val)
	Set all vector entries NOT in the dofs Array to the given val. More...

void	Print (std::ostream &out=mfem::out, int width=8) const
	Prints vector to stream out. More...

void	Print (adios2stream &out, const std::string &variable_name) const

void	Print_HYPRE (std::ostream &out) const
	Prints vector to stream out in HYPRE_Vector format. More...

void	PrintHash (std::ostream &out) const
	Print the Vector size and hash of its data. More...

void	Randomize (int seed=0)
	Set random values in the vector. More...

double	Norml2 () const
	Returns the l2 norm of the vector. More...

double	Normlinf () const
	Returns the l_infinity norm of the vector. More...

double	Norml1 () const
	Returns the l_1 norm of the vector. More...

double	Normlp (double p) const
	Returns the l_p norm of the vector. More...

double	Max () const
	Returns the maximal element of the vector. More...

double	Min () const
	Returns the minimal element of the vector. More...

double	Sum () const
	Return the sum of the vector entries. More...

double	DistanceSquaredTo (const double *p) const
	Compute the square of the Euclidean distance to another vector. More...

double	DistanceSquaredTo (const Vector &p) const
	Compute the square of the Euclidean distance to another vector. More...

double	DistanceTo (const double *p) const
	Compute the Euclidean distance to another vector. More...

double	DistanceTo (const Vector &p) const
	Compute the Euclidean distance to another vector. More...

int	CheckFinite () const
	Count the number of entries in the Vector for which isfinite is false, i.e. the entry is a NaN or +/-Inf. More...

virtual	~Vector ()
	Destroys vector. More...

virtual const double *	Read (bool on_dev=true) const
	Shortcut for mfem::Read(vec.GetMemory(), vec.Size(), on_dev). More...

virtual const double *	HostRead () const
	Shortcut for mfem::Read(vec.GetMemory(), vec.Size(), false). More...

virtual double *	Write (bool on_dev=true)
	Shortcut for mfem::Write(vec.GetMemory(), vec.Size(), on_dev). More...

virtual double *	HostWrite ()
	Shortcut for mfem::Write(vec.GetMemory(), vec.Size(), false). More...

virtual double *	ReadWrite (bool on_dev=true)
	Shortcut for mfem::ReadWrite(vec.GetMemory(), vec.Size(), on_dev). More...

virtual double *	HostReadWrite ()
	Shortcut for mfem::ReadWrite(vec.GetMemory(), vec.Size(), false). More...

Protected Member Functions
bool	HaveDeltaLocations ()
	If true, the delta locations are not (re)computed during assembly. More...

void	ResetDeltaLocations ()
	Force (re)computation of delta locations. More...

Protected Attributes
FiniteElementSpace *	fes
	FE space on which the LinearForm lives. Not owned. More...

LinearFormExtension *	ext = nullptr
	Extension for supporting different assembly levels. More...

bool	fast_assembly = false
	Should we use the device-compatible fast assembly algorithm (false by default) More...

int	extern_lfs = 0
	Indicates the LinearFormIntegrators stored in domain_integs, domain_delta_integs, boundary_integs, and boundary_face_integs are owned by another LinearForm. More...

Array< LinearFormIntegrator * >	domain_integs
	Set of Domain Integrators to be applied. More...

Array< Array< int > * >	domain_integs_marker

Array< DeltaLFIntegrator * >	domain_delta_integs
	Separate array for integrators with delta function coefficients. More...

Array< LinearFormIntegrator * >	boundary_integs
	Set of Boundary Integrators to be applied. More...

Array< Array< int > * >	boundary_integs_marker
	Entries are not owned. More...

Array< LinearFormIntegrator * >	boundary_face_integs
	Set of Boundary Face Integrators to be applied. More...

Array< Array< int > * >	boundary_face_integs_marker
	Entries not owned. More...

Array< LinearFormIntegrator * >	interior_face_integs
	Set of Internal Face Integrators to be applied. More...

Array< int >	domain_delta_integs_elem_id
	The element ids where the centers of the delta functions lie. More...

Array< IntegrationPoint >	domain_delta_integs_ip
	The reference coordinates where the centers of the delta functions lie. More...

Protected Attributes inherited from mfem::Vector
Memory< double >	data

int	size

Detailed Description

Vector with associated FE space and LinearFormIntegrators.

Definition at line 24 of file linearform.hpp.

Constructor & Destructor Documentation

◆ LinearForm() [1/4]

mfem::LinearForm::LinearForm ( FiniteElementSpace * f )

inline

Creates linear form associated with FE space *f.

The pointer f is not owned by the newly constructed object.

Definition at line 88 of file linearform.hpp.

◆ LinearForm() [2/4]

mfem::LinearForm::LinearForm	(	FiniteElementSpace *	f,
		LinearForm *	lf
	)

Create a LinearForm on the FiniteElementSpace f, using the same integrators as the LinearForm lf.

The pointer f is not owned by the newly constructed object.

The integrators in lf are copied as pointers and they are not owned by the newly constructed LinearForm.

Definition at line 19 of file linearform.cpp.

◆ LinearForm() [3/4]

mfem::LinearForm::LinearForm ( )

inline

Create an empty LinearForm without an associated FiniteElementSpace.

The associated FiniteElementSpace can be set later using one of the methods: Update(FiniteElementSpace *) or Update(FiniteElementSpace *, Vector &, int).

Definition at line 104 of file linearform.hpp.

◆ LinearForm() [4/4]

mfem::LinearForm::LinearForm	(	FiniteElementSpace *	f,
		double *	data
	)

inline

Construct a LinearForm using previously allocated array data.

The LinearForm does not assume ownership of data which is assumed to be of size at least f->GetVSize(). Similar to the Vector constructor for externally allocated array, the pointer data can be NULL. The data array can be replaced later using the method SetData().

Definition at line 112 of file linearform.hpp.

◆ ~LinearForm()

mfem::LinearForm::~LinearForm ( )

Destroys linear form.

Definition at line 419 of file linearform.cpp.

Member Function Documentation

◆ AddBdrFaceIntegrator() [1/2]

void mfem::LinearForm::AddBdrFaceIntegrator ( LinearFormIntegrator * lfi )

Adds new Boundary Face Integrator. Assumes ownership of lfi.

Definition at line 85 of file linearform.cpp.

◆ AddBdrFaceIntegrator() [2/2]

void mfem::LinearForm::AddBdrFaceIntegrator	(	LinearFormIntegrator *	lfi,
		Array< int > &	bdr_attr_marker
	)

Add new Boundary Face Integrator, restricted to the given boundary attributes.

Assumes ownership of lfi. The array bdr_attr_marker is stored internally as a pointer to the given Array<int> object.

Definition at line 92 of file linearform.cpp.

◆ AddBoundaryIntegrator() [1/2]

void mfem::LinearForm::AddBoundaryIntegrator ( LinearFormIntegrator * lfi )

Adds new Boundary Integrator. Assumes ownership of lfi.

Definition at line 72 of file linearform.cpp.

◆ AddBoundaryIntegrator() [2/2]

void mfem::LinearForm::AddBoundaryIntegrator	(	LinearFormIntegrator *	lfi,
		Array< int > &	bdr_attr_marker
	)

Add new Boundary Integrator, restricted to the given boundary attributes.

Assumes ownership of lfi. The array bdr_attr_marker is stored internally as a pointer to the given Array<int> object.

Definition at line 78 of file linearform.cpp.

◆ AddDomainIntegrator() [1/2]

void mfem::LinearForm::AddDomainIntegrator ( LinearFormIntegrator * lfi )

Adds new Domain Integrator. Assumes ownership of lfi.

Definition at line 41 of file linearform.cpp.

◆ AddDomainIntegrator() [2/2]

void mfem::LinearForm::AddDomainIntegrator	(	LinearFormIntegrator *	lfi,
		Array< int > &	elem_marker
	)

Adds new Domain Integrator restricted to certain elements specified by the elem_attr_marker.

Definition at line 56 of file linearform.cpp.

◆ AddInteriorFaceIntegrator()

void mfem::LinearForm::AddInteriorFaceIntegrator ( LinearFormIntegrator * lfi )

Adds new Interior Face Integrator. Assumes ownership of lfi.

Definition at line 99 of file linearform.cpp.

◆ Assemble()

void mfem::LinearForm::Assemble ( )

Assembles the linear form i.e. sums over all domain/bdr integrators.

When UseFastAssembly(true) has been called and the linearform assembly is compatible with device execution, it will be executed on the device.

Definition at line 168 of file linearform.cpp.

◆ AssembleDelta()

void mfem::LinearForm::AssembleDelta ( )

Assembles delta functions of the linear form.

Definition at line 365 of file linearform.cpp.

◆ FESpace() [1/2]

FiniteElementSpace* mfem::LinearForm::FESpace ( )

inline

Read+write access to the associated FiniteElementSpace.

Definition at line 129 of file linearform.hpp.

◆ FESpace() [2/2]

const FiniteElementSpace* mfem::LinearForm::FESpace ( ) const

inline

Read-only access to the associated FiniteElementSpace.

Definition at line 131 of file linearform.hpp.

◆ GetBLFI()

Array<LinearFormIntegrator*>* mfem::LinearForm::GetBLFI ( )

inline

Access all integrators added with AddBoundaryIntegrator().

Definition at line 180 of file linearform.hpp.

◆ GetDLFI()

Array<LinearFormIntegrator*>* mfem::LinearForm::GetDLFI ( )

inline

Access all integrators added with AddDomainIntegrator() which are not DeltaLFIntegrators or they are DeltaLFIntegrators with non-delta coefficients.

Definition at line 168 of file linearform.hpp.

◆ GetDLFI_Delta()

Array<DeltaLFIntegrator*>* mfem::LinearForm::GetDLFI_Delta ( )

inline

Access all integrators added with AddDomainIntegrator() which are DeltaLFIntegrators with delta coefficients.

Definition at line 177 of file linearform.hpp.

◆ GetDLFI_Marker()

Array<Array<int>*>* mfem::LinearForm::GetDLFI_Marker ( )

inline

Access all domain markers added with AddDomainIntegrator(). If no marker was specified when the integrator was added, the corresponding pointer (to Array<int>) will be NULL.

Definition at line 173 of file linearform.hpp.

◆ GetFES()

MFEM_DEPRECATED FiniteElementSpace* mfem::LinearForm::GetFES ( )

inline

(DEPRECATED) Return the FE space associated with the LinearForm.

Deprecated:: Use FESpace() instead.

Definition at line 126 of file linearform.hpp.

◆ GetFLFI()

Array<LinearFormIntegrator*>* mfem::LinearForm::GetFLFI ( )

inline

Access all integrators added with AddBdrFaceIntegrator().

Definition at line 183 of file linearform.hpp.

◆ GetFLFI_Marker()

Array<Array<int>*>* mfem::LinearForm::GetFLFI_Marker ( )

inline

Access all boundary markers added with AddBdrFaceIntegrator(). If no marker was specified when the integrator was added, the corresponding pointer (to Array<int>) will be NULL.

Definition at line 191 of file linearform.hpp.

◆ GetIFLFI()

Array<LinearFormIntegrator*>* mfem::LinearForm::GetIFLFI ( )

inline

Access all integrators added with AddInteriorFaceIntegrator().

Definition at line 186 of file linearform.hpp.

◆ HaveDeltaLocations()

bool mfem::LinearForm::HaveDeltaLocations ( )

inlineprotected

If true, the delta locations are not (re)computed during assembly.

Definition at line 75 of file linearform.hpp.

◆ MakeRef()

void mfem::LinearForm::MakeRef	(	FiniteElementSpace *	f,
		Vector &	v,
		int	v_offset
	)

virtual

Make the LinearForm reference external data on a new FiniteElementSpace.

This method changes the FiniteElementSpace associated with the LinearForm *f and sets the data of the Vector v (plus the v_offset) as external data in the LinearForm.

Note: This version of the method will also perform bounds checks when the build option MFEM_DEBUG is enabled.

Reimplemented in mfem::ParLinearForm.

Definition at line 360 of file linearform.cpp.

◆ operator()()

double mfem::LinearForm::operator() ( const GridFunction & gf ) const

inline

Return the action of the LinearForm as a linear mapping.

Linear forms are linear functionals which map GridFunctions to the real numbers. This method performs this mapping which in this case is equivalent as an inner product of the LinearForm and GridFunction.

Definition at line 242 of file linearform.hpp.

◆ operator=() [1/3]

LinearForm& mfem::LinearForm::operator= ( const LinearForm & rhs )

inline

Copy assignment. Only the data of the base class Vector is copied.

It is assumed that this object and rhs use FiniteElementSpaces that have the same size.

Note: Defining this method overwrites the implicitly defined copy assignment operator.

Definition at line 121 of file linearform.hpp.

◆ operator=() [2/3]

LinearForm & mfem::LinearForm::operator= ( double value )

Redefine '=' for LinearForm = constant.

Definition at line 406 of file linearform.cpp.

◆ operator=() [3/3]

LinearForm & mfem::LinearForm::operator= ( const Vector & v )

Copy the data from v.

The size of v must be equal to the size of the associated FiniteElementSpace fes.

Definition at line 412 of file linearform.cpp.

◆ ResetDeltaLocations()

void mfem::LinearForm::ResetDeltaLocations ( )

inlineprotected

Force (re)computation of delta locations.

Definition at line 79 of file linearform.hpp.

◆ SupportsDevice()

bool mfem::LinearForm::SupportsDevice ( ) const

virtual

Return true if assembly on device is supported, false otherwise.

Reimplemented in mfem::ParLinearForm.

Definition at line 104 of file linearform.cpp.

◆ Update() [1/3]

void mfem::LinearForm::Update ( )

Update the object according to the associated FE space fes.

This method should be called when the associated FE space fes has been updated, e.g. after its associated Mesh object has been refined.

Note: This method does not perform assembly.

Definition at line 344 of file linearform.cpp.

◆ Update() [2/3]

void mfem::LinearForm::Update ( FiniteElementSpace * f )

inline

Associate a new FE space, *f, with this object and Update() it. */.

Definition at line 219 of file linearform.hpp.

◆ Update() [3/3]

void mfem::LinearForm::Update	(	FiniteElementSpace *	f,
		Vector &	v,
		int	v_offset
	)

Associate a new FE space, *f, with this object and use the data of v, offset by v_offset, to initialize this object's Vector::data.

Note: This method does not perform assembly.

Definition at line 350 of file linearform.cpp.

◆ UseFastAssembly()

void mfem::LinearForm::UseFastAssembly ( bool use_fa )

Which assembly algorithm to use: the new device-compatible fast assembly (true), or the legacy CPU-only algorithm (false).

If not set, the default value is false. If used, this method must be called before assembly.

Definition at line 158 of file linearform.cpp.

Member Data Documentation

◆ boundary_face_integs

Array<LinearFormIntegrator*> mfem::LinearForm::boundary_face_integs

protected

Set of Boundary Face Integrators to be applied.

Definition at line 62 of file linearform.hpp.

◆ boundary_face_integs_marker

Array<Array<int>*> mfem::LinearForm::boundary_face_integs_marker

protected

Entries not owned.

Definition at line 63 of file linearform.hpp.

◆ boundary_integs

Array<LinearFormIntegrator*> mfem::LinearForm::boundary_integs

protected

Set of Boundary Integrators to be applied.

Definition at line 57 of file linearform.hpp.

◆ boundary_integs_marker

Array<Array<int>*> mfem::LinearForm::boundary_integs_marker

protected

Entries are not owned.

Definition at line 59 of file linearform.hpp.

◆ domain_delta_integs

Array<DeltaLFIntegrator*> mfem::LinearForm::domain_delta_integs

protected

Separate array for integrators with delta function coefficients.

Definition at line 54 of file linearform.hpp.

◆ domain_delta_integs_elem_id

Array<int> mfem::LinearForm::domain_delta_integs_elem_id

protected

The element ids where the centers of the delta functions lie.

Definition at line 69 of file linearform.hpp.

◆ domain_delta_integs_ip

Array<IntegrationPoint> mfem::LinearForm::domain_delta_integs_ip

protected

The reference coordinates where the centers of the delta functions lie.

Definition at line 72 of file linearform.hpp.

◆ domain_integs

Array<LinearFormIntegrator*> mfem::LinearForm::domain_integs

protected

Set of Domain Integrators to be applied.

Definition at line 45 of file linearform.hpp.

◆ domain_integs_marker

Array<Array<int>*> mfem::LinearForm::domain_integs_marker

protected

Element attribute marker (should be of length mesh->attributes.Max() or 0 if mesh->attributes is empty) Includes all by default. 0 - ignore attribute 1 - include attribute

Definition at line 51 of file linearform.hpp.

◆ ext

LinearFormExtension* mfem::LinearForm::ext = nullptr

protected

Extension for supporting different assembly levels.

Definition at line 33 of file linearform.hpp.

◆ extern_lfs

int mfem::LinearForm::extern_lfs = 0

protected

Indicates the LinearFormIntegrators stored in domain_integs, domain_delta_integs, boundary_integs, and boundary_face_integs are owned by another LinearForm.

Definition at line 42 of file linearform.hpp.

◆ fast_assembly

bool mfem::LinearForm::fast_assembly = false

protected

Should we use the device-compatible fast assembly algorithm (false by default)

Definition at line 37 of file linearform.hpp.

◆ fes

FiniteElementSpace* mfem::LinearForm::fes

protected

FE space on which the LinearForm lives. Not owned.

Definition at line 30 of file linearform.hpp.

◆ interior_face_integs

Array<LinearFormIntegrator*> mfem::LinearForm::interior_face_integs

protected

Set of Internal Face Integrators to be applied.

Definition at line 66 of file linearform.hpp.

The documentation for this class was generated from the following files:

fem/linearform.hpp
fem/linearform.cpp

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

◆ LinearForm() [1/4]

◆ LinearForm() [2/4]

◆ LinearForm() [3/4]

◆ LinearForm() [4/4]

◆ ~LinearForm()

Member Function Documentation

◆ AddBdrFaceIntegrator() [1/2]

◆ AddBdrFaceIntegrator() [2/2]

◆ AddBoundaryIntegrator() [1/2]

◆ AddBoundaryIntegrator() [2/2]

◆ AddDomainIntegrator() [1/2]

◆ AddDomainIntegrator() [2/2]

◆ AddInteriorFaceIntegrator()

◆ Assemble()

◆ AssembleDelta()

◆ FESpace() [1/2]

◆ FESpace() [2/2]

◆ GetBLFI()

◆ GetDLFI()

◆ GetDLFI_Delta()

◆ GetDLFI_Marker()

◆ GetFES()

◆ GetFLFI()

◆ GetFLFI_Marker()

◆ GetIFLFI()

◆ HaveDeltaLocations()

◆ MakeRef()

◆ operator()()

◆ operator=() [1/3]

◆ operator=() [2/3]

◆ operator=() [3/3]

◆ ResetDeltaLocations()

◆ SupportsDevice()

◆ Update() [1/3]

◆ Update() [2/3]

◆ Update() [3/3]

◆ UseFastAssembly()

Member Data Documentation

◆ boundary_face_integs

◆ boundary_face_integs_marker

◆ boundary_integs

◆ boundary_integs_marker

◆ domain_delta_integs

◆ domain_delta_integs_elem_id

◆ domain_delta_integs_ip

◆ domain_integs

◆ domain_integs_marker

◆ ext

◆ extern_lfs

◆ fast_assembly

◆ fes

◆ interior_face_integs