A Rank 4 Tensor class. More...

#include <matrices.h>

Public Member Functions
	RankFourTensor ()
	Empty constructor. More...

	RankFourTensor (const RankFourTensor &source_tensor)
	Copy constructor: Deep copy. More...

RankFourTensor &	operator= (const RankFourTensor &source_tensor)
	Copy assignement. More...

	RankFourTensor (const unsigned long &n)
	One parameter constructor produces a nxnxnxn tensor. More...

	RankFourTensor (const unsigned long &n_index1, const unsigned long &n_index2, const unsigned long &n_index3, const unsigned long &n_index4)
	Four parameter constructor, general non-square tensor. More...

	RankFourTensor (const unsigned long &n_index1, const unsigned long &n_index2, const unsigned long &n_index3, const unsigned long &n_index4, const T &initial_val)
	Four parameter constructor, general non-square tensor. More...

virtual	~RankFourTensor ()
	Destructor: delete the pointers. More...

void	resize (const unsigned long &n)
	Resize to a square nxnxnxn tensor. More...

void	resize (const unsigned long &n_index1, const unsigned long &n_index2, const unsigned long &n_index3, const unsigned long &n_index4)
	Resize to a general tensor. More...

void	resize (const unsigned long &n_index1, const unsigned long &n_index2, const unsigned long &n_index3, const unsigned long &n_index4, const T &initial_value)
	Resize to a general tensor. More...

void	initialise (const T &val)
	Initialise all values in the tensor to val. More...

unsigned long	nindex1 () const
	Return the range of index 1 of the tensor. More...

unsigned long	nindex2 () const
	Return the range of index 2 of the tensor. More...

unsigned long	nindex3 () const
	Return the range of index 3 of the tensor. More...

unsigned long	nindex4 () const
	Return the range of index 4 of the tensor. More...

T &	operator() (const unsigned long &i, const unsigned long &j, const unsigned long &k, const unsigned long &l)
	Overload the round brackets to give access as a(i,j,k,l) More...

T	operator() (const unsigned long &i, const unsigned long &j, const unsigned long &k, const unsigned long &l) const
	Overload a const version for read-only access as a(i,j,k,l) More...

T &	raw_direct_access (const unsigned long &i)
	Direct access to internal storage of data in flat-packed C-style column-major format. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems. More...

const T &	raw_direct_access (const unsigned long &i) const
	Direct access to internal storage of data in flat-packed C-style column-major format. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems. More...

unsigned	offset (const unsigned long &i, const unsigned long &j) const
	Caculate the offset in flat-packed C-style, column-major format, required for a given i,j. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems. More...

Private Member Functions
void	range_check (const unsigned long &i, const unsigned long &j, const unsigned long &k, const unsigned long &l) const
	Range check to catch when an index is out of bounds, if so, it issues a warning message and dies by throwing an `OomphLibError`. More...

Private Attributes
T *	Tensordata
	Private internal representation as pointer to data. More...

unsigned	N
	1st Tensor dimension More...

unsigned	M
	2nd Tensor dimension More...

unsigned	P
	3rd Tensor dimension More...

unsigned	Q
	4th Tensor dimension More...

Detailed Description

template<class T>
class oomph::RankFourTensor< T >

A Rank 4 Tensor class.

Definition at line 1625 of file matrices.h.

Constructor & Destructor Documentation

◆ RankFourTensor() [1/5]

template<class T>

oomph::RankFourTensor< T >::RankFourTensor ( )

inline

Empty constructor.

Definition at line 1696 of file matrices.h.

◆ RankFourTensor() [2/5]

template<class T>

oomph::RankFourTensor< T >::RankFourTensor ( const RankFourTensor< T > & source_tensor )

inline

Copy constructor: Deep copy.

Definition at line 1699 of file matrices.h.

References i, oomph::QuadTreeNames::N, oomph::RankFourTensor< T >::nindex1(), oomph::RankFourTensor< T >::nindex2(), oomph::RankFourTensor< T >::nindex3(), oomph::RankFourTensor< T >::nindex4(), oomph::ElementGeometry::Q, and oomph::ElementGeometry::T.

◆ RankFourTensor() [3/5]

template<class T>

oomph::RankFourTensor< T >::RankFourTensor ( const unsigned long & n )

inline

One parameter constructor produces a nxnxnxn tensor.

Definition at line 1761 of file matrices.h.

References oomph::ElementGeometry::Q, and oomph::ElementGeometry::T.

◆ RankFourTensor() [4/5]

template<class T>

oomph::RankFourTensor< T >::RankFourTensor	(	const unsigned long &	n_index1,
		const unsigned long &	n_index2,
		const unsigned long &	n_index3,
		const unsigned long &	n_index4
	)

inline

Four parameter constructor, general non-square tensor.

Definition at line 1774 of file matrices.h.

References oomph::ElementGeometry::Q, and oomph::ElementGeometry::T.

◆ RankFourTensor() [5/5]

template<class T>

oomph::RankFourTensor< T >::RankFourTensor	(	const unsigned long &	n_index1,
		const unsigned long &	n_index2,
		const unsigned long &	n_index3,
		const unsigned long &	n_index4,
		const T &	initial_val
	)

inline

Four parameter constructor, general non-square tensor.

Definition at line 1789 of file matrices.h.

References oomph::ElementGeometry::Q, and oomph::ElementGeometry::T.

◆ ~RankFourTensor()

template<class T>

virtual oomph::RankFourTensor< T >::~RankFourTensor ( )

inlinevirtual

Destructor: delete the pointers.

Definition at line 1802 of file matrices.h.

Member Function Documentation

◆ initialise()

template<class T>

void oomph::RankFourTensor< T >::initialise ( const T & val )

inline

Initialise all values in the tensor to val.

Definition at line 1905 of file matrices.h.

References i, and oomph::ElementGeometry::Q.

◆ nindex1()

template<class T>

unsigned long oomph::RankFourTensor< T >::nindex1 ( ) const

inline

Return the range of index 1 of the tensor.

Definition at line 1909 of file matrices.h.

References oomph::QuadTreeNames::N.

Referenced by oomph::FiniteElement::d_dshape_eulerian_dnodal_coordinates(), oomph::RankFourTensor< T >::operator=(), and oomph::RankFourTensor< T >::RankFourTensor().

◆ nindex2()

template<class T>

unsigned long oomph::RankFourTensor< T >::nindex2 ( ) const

inline

Return the range of index 2 of the tensor.

Definition at line 1912 of file matrices.h.

Referenced by oomph::FiniteElement::d_dshape_eulerian_dnodal_coordinates(), oomph::RankFourTensor< T >::operator=(), and oomph::RankFourTensor< T >::RankFourTensor().

◆ nindex3()

template<class T>

unsigned long oomph::RankFourTensor< T >::nindex3 ( ) const

inline

Return the range of index 3 of the tensor.

Definition at line 1915 of file matrices.h.

Referenced by oomph::FiniteElement::d_dshape_eulerian_dnodal_coordinates(), oomph::RankFourTensor< T >::operator=(), and oomph::RankFourTensor< T >::RankFourTensor().

◆ nindex4()

template<class T>

unsigned long oomph::RankFourTensor< T >::nindex4 ( ) const

inline

Return the range of index 4 of the tensor.

Definition at line 1918 of file matrices.h.

References oomph::ElementGeometry::Q.

Referenced by oomph::FiniteElement::d_dshape_eulerian_dnodal_coordinates(), oomph::RankFourTensor< T >::operator=(), and oomph::RankFourTensor< T >::RankFourTensor().

◆ offset()

template<class T>

unsigned oomph::RankFourTensor< T >::offset	(	const unsigned long &	i,
		const unsigned long &	j
	)		const

inline

Caculate the offset in flat-packed C-style, column-major format, required for a given i,j. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems.

Definition at line 1960 of file matrices.h.

Referenced by oomph::RefineablePVDEquations< DIM >::fill_in_generic_contribution_to_residuals_pvd(), oomph::PVDEquations< DIM >::fill_in_generic_contribution_to_residuals_pvd(), oomph::RefineablePVDEquationsWithPressure< DIM >::fill_in_generic_residual_contribution_pvd_with_pressure(), and oomph::PVDEquationsWithPressure< DIM >::fill_in_generic_residual_contribution_pvd_with_pressure().

◆ operator()() [1/2]

template<class T>

T& oomph::RankFourTensor< T >::operator()	(	const unsigned long &	i,
		const unsigned long &	j,
		const unsigned long &	k,
		const unsigned long &	l
	)

inline

Overload the round brackets to give access as a(i,j,k,l)

Definition at line 1921 of file matrices.h.

References oomph::Matrix< T, MATRIX_TYPE >::range_check().

◆ operator()() [2/2]

template<class T>

T oomph::RankFourTensor< T >::operator()	(	const unsigned long &	i,
		const unsigned long &	j,
		const unsigned long &	k,
		const unsigned long &	l
	)		const

inline

Overload a const version for read-only access as a(i,j,k,l)

Definition at line 1931 of file matrices.h.

References oomph::Matrix< T, MATRIX_TYPE >::range_check().

◆ operator=()

template<class T>

RankFourTensor& oomph::RankFourTensor< T >::operator= ( const RankFourTensor< T > & source_tensor )

inline

Copy assignement.

Definition at line 1727 of file matrices.h.

References i, oomph::QuadTreeNames::N, oomph::RankFourTensor< T >::nindex1(), oomph::RankFourTensor< T >::nindex2(), oomph::RankFourTensor< T >::nindex3(), oomph::RankFourTensor< T >::nindex4(), and oomph::ElementGeometry::Q.

◆ range_check()

template<class T>

void oomph::RankFourTensor< T >::range_check	(	const unsigned long &	i,
		const unsigned long &	j,
		const unsigned long &	k,
		const unsigned long &	l
	)		const

inlineprivate

Range check to catch when an index is out of bounds, if so, it issues a warning message and dies by throwing an OomphLibError.

Definition at line 1647 of file matrices.h.

◆ raw_direct_access() [1/2]

template<class T>

T& oomph::RankFourTensor< T >::raw_direct_access ( const unsigned long & i )

inline

Direct access to internal storage of data in flat-packed C-style column-major format. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems.

Definition at line 1946 of file matrices.h.

References i.

Referenced by oomph::RefineablePVDEquations< DIM >::fill_in_generic_contribution_to_residuals_pvd(), oomph::PVDEquations< DIM >::fill_in_generic_contribution_to_residuals_pvd(), oomph::RefineablePVDEquationsWithPressure< DIM >::fill_in_generic_residual_contribution_pvd_with_pressure(), and oomph::PVDEquationsWithPressure< DIM >::fill_in_generic_residual_contribution_pvd_with_pressure().

◆ raw_direct_access() [2/2]

template<class T>

const T& oomph::RankFourTensor< T >::raw_direct_access ( const unsigned long & i ) const

inline

Direct access to internal storage of data in flat-packed C-style column-major format. WARNING: Only for experienced users. Only use this if raw speed is of the essence, as in the solid mechanics problems.

Definition at line 1953 of file matrices.h.

References i.

◆ resize() [1/3]

template<class T>

void oomph::RankFourTensor< T >::resize ( const unsigned long & n )

inline

Resize to a square nxnxnxn tensor.

Definition at line 1805 of file matrices.h.

References oomph::RankFourTensor< T >::resize().

Referenced by oomph::RankFourTensor< T >::resize().

◆ resize() [2/3]

template<class T>

void oomph::RankFourTensor< T >::resize	(	const unsigned long &	n_index1,
		const unsigned long &	n_index2,
		const unsigned long &	n_index3,
		const unsigned long &	n_index4
	)

inline

Resize to a general tensor.

Definition at line 1808 of file matrices.h.

References i, oomph::QuadTreeNames::N, oomph::ElementGeometry::Q, and oomph::ElementGeometry::T.

◆ resize() [3/3]

template<class T>

void oomph::RankFourTensor< T >::resize	(	const unsigned long &	n_index1,
		const unsigned long &	n_index2,
		const unsigned long &	n_index3,
		const unsigned long &	n_index4,
		const T &	initial_value
	)