SymMatrix< T, SX > Class Template Reference

A template-based symmetric matrix class, size fixed at compile time. This primitive template-based matrix class should be used where the matrix size is fixed at compile time. More...

#include <matrix.h>

Public Member Functions
constexpr	SymMatrix (const SymMatrix< T, SX > &)=default
constexpr SymMatrix< T, SX > &	operator= (const SymMatrix< T, SX > &)=default
	SymMatrix (const T &t)
	Explicit constructor, initializes all elements to value t.
const T &	get (unsigned x, unsigned y) const
	Retrieve value at row x column y. Bounds checking is done in a debug compile.
T &	get (unsigned x, unsigned y)
	Retrieve value at row x column y. Bounds checking is done in a debug compile.
const Column	operator[] (unsigned y) const
	Array access operator returns a Column helper class, which has it's own [] operator to access a column of the row.
Column	operator[] (unsigned y)
	Array access operator returns a Column helper class, which has it's own [] operator to access a column of the row.
const T &	operator() (unsigned x, unsigned y) const
	() operator access to get(x,y)
T &	operator() (unsigned x, unsigned y)
	() operator access to get(x,y)
constexpr UVect2	size () const
const SymMatrix< T, SX > &	operator+= (const SymMatrix< T, SX > &m)
	In-place matrix addition.
const SymMatrix< T, SX > &	operator-= (const SymMatrix< T, SX > &m)
	In-place matrix subtraction.
const SymMatrix< T, SX > &	operator*= (const T &t)
	In-place multiplication by a scalar.
const SymMatrix< T, SX > &	operator/= (const T &t)
	In-place division by a scalar.
SymMatrix< T, SX >	operator+ (const SymMatrix< T, SX > &m) const
	Binary addition operator for a symetric matris.
Matrix< T, SX, SX >	operator+ (const Matrix< T, SX, SX > &m) const
	Binary addition operator.
SymMatrix< T, SX >	operator- (const SymMatrix< T, SX > &m) const
	Binary subtraction operator for a symetric matrix.
Matrix< T, SX, SX >	operator- (const Matrix< T, SX, SX > &m) const
	Binary subtraction operator.
SymMatrix< T, SX >	operator* (const T &t) const
	Binary scalar multiplication operator for a symetric matrix.
SymMatrix< T, SX >	operator/ (const T &t) const
	Binary scalar division operator for a symetric matrix.
constexpr Matrix< T, SX, SX >	operator* (const SymMatrix< T, SX > &m) const
	Binary matrix multiplication operator – simplest naive approach.
template<unsigned SZ>
constexpr Matrix< T, SX, SZ >	operator* (const Matrix< T, SX, SZ > &m) const
	Binary matrix multiplication operator – simplest naive approach.
template<unsigned BX, unsigned BY, unsigned SX2, unsigned SY2>
void	addBlock (const Matrix< T, SX2, SY2 > &m, unsigned iSrc, unsigned jSrc, unsigned iDst, unsigned jDst)
	Adds a block to this matrix from matrix m using the block size (BX,BY), from block indices (iSrc,jSrc) to block indices (iDst,jDst).
template<unsigned BX, unsigned BY, unsigned SX2>
void	addBlock (const SymMatrix< T, SX2 > &m, unsigned iSrc, unsigned jSrc, unsigned iDst, unsigned jDst)
	Adds a block to this matrix from matrix m using the block size (BX,BY), from block indices (iSrc,jSrc) to block indices (iDst,jDst).
template<unsigned BX, unsigned BY, unsigned SX2, unsigned SY2>
void	addGenBlock (const Matrix< T, SX2, SY2 > &m, unsigned iSrc, unsigned jSrc, unsigned iDst, unsigned jDst)
	Adds a block to this matrix from matrix m using the block size (BX,BY), from normal not block indices (iSrc,jSrc) to (iDst,jDst).
template<unsigned BX, unsigned BY, unsigned SX2>
void	addGenBlock (const SymMatrix< T, SX2 > &m, unsigned iSrc, unsigned jSrc, unsigned iDst, unsigned jDst)
	Adds a block to this matrix from matrix m using the block size (BX,BY), from normal not block indices (iSrc,jSrc) to (iDst,jDst).
T	maxNorm () const
	Returns the infinity norm of the matrix, or the maximum absolute magnitude of any element.
SymMatrix< T, SX >	transpose () const
	Return the transpose of the matrix.
T	trace () const
	Return the trace of the matrix or the sum of the diagonal components. Works also if the matrix is not square.
constexpr void	set (const T &t=T{})
	Sets all matrix elements to t.
constexpr T	minEntry () const
constexpr T	maxEntry () const
Matrix< T, SX, SX >	toMatrix () const
	Returns its copy.

Static Public Member Functions
static SymMatrix< T, SX >	identity ()
	Returns an identity matrix (or as close as you can get if not diagonal).
static SymMatrix< T, SX >	fromMatrix (const Matrix< T, SX, SX > &m)
	Assign from full matrix.
static constexpr unsigned	index (unsigned x, unsigned y)

Public Attributes
T	t_ [len_]

Static Public Attributes
static constexpr unsigned	len_ = (SX*SX + SX) / 2
static constexpr unsigned	indexConst_ = 1 + 2*SX

Related Symbols
(Note that these are not member symbols.)
template<class T>
constexpr Vector2< T >	operator* (const SymMatrix< T, 2 > &m, const Vector2< T > &v)

Detailed Description

template<class T, unsigned SX>
class SymMatrix< T, SX >

A template-based symmetric matrix class, size fixed at compile time. This primitive template-based matrix class should be used where the matrix size is fixed at compile time.

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

• C:/Source/itasca-suite/common/base/src/matrix.h