Eigen::MatrixPower< MatrixType > Class Template Reference

Class for computing matrix powers. More...

#include <MatrixPower.h>

Inheritance diagram for Eigen::MatrixPower< MatrixType >:

Public Member Functions
	MatrixPower (const MatrixType &A)
	Constructor.
const MatrixPowerParenthesesReturnValue< MatrixType >	operator() (RealScalar p)
	Returns the matrix power.
template<typename ResultType >
void	compute (ResultType &res, RealScalar p)
	Compute the matrix power.
Index	rows () const
Index	cols () const

Detailed Description

template<typename MatrixType>
class Eigen::MatrixPower< MatrixType >

Class for computing matrix powers.

Template Parameters

MatrixType

type of the base, expected to be an instantiation of the Matrix class template.

This class is capable of computing real/complex matrices raised to an arbitrary real power. Meanwhile, it saves the result of Schur decomposition if an non-integral power has even been calculated. Therefore, if you want to compute multiple (>= 2) matrix powers for the same matrix, using the class directly is more efficient than calling MatrixBase::pow().

Example:

Output:

Constructor & Destructor Documentation

MatrixPower()

template<typename MatrixType >

Eigen::MatrixPower< MatrixType >::MatrixPower ( const MatrixType &  A )

inlineexplicit

Constructor.

Parameters

[in]

A

the base of the matrix power.

The class stores a reference to A, so it should not be changed (or destroyed) before evaluation.

Member Function Documentation

cols()

template<typename MatrixType >

Index Eigen::MatrixPower< MatrixType >::cols ( ) const

inline

compute()

template<typename MatrixType >

template<typename ResultType >

void Eigen::MatrixPower< MatrixType >::compute	(	ResultType &	res,
		RealScalar	p
	)

Compute the matrix power.

Parameters

[in]	p	exponent, a real scalar.
[out]	res	where A is specified in the constructor.

operator()()

template<typename MatrixType >

const MatrixPowerParenthesesReturnValue< MatrixType > Eigen::MatrixPower< MatrixType >::operator() ( RealScalar  p )

inline

Returns the matrix power.

Parameters

[in]

p

exponent, a real scalar.

Returns

The expression , where A is specified in the constructor.

rows()

template<typename MatrixType >

Index Eigen::MatrixPower< MatrixType >::rows ( ) const

inline

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

• core/util/algorithms/eigen-3.4.0/unsupported/Eigen/src/MatrixFunctions/MatrixPower.h