Lightweight container class to represent a simple polynomial. More...

#include <Teuchos_PolynomialDecl.hpp>

Inheritance diagram for Teuchos::Polynomial< CoeffT >:

Public Types
typedef CoeffT	coeff_type
	Typename of coefficients. More...

typedef Teuchos::PolynomialTraits < coeff_type >::scalar_type	scalar_type
	Typename of scalars. More...

Public Member Functions
	Polynomial (unsigned int deg, const CoeffT &cloneCoeff, unsigned int reserve=0)
	Create a polynomial of degree `deg`. More...

	Polynomial (unsigned int deg, unsigned int reserve=0)
	Create a polynomial of degree `deg` without cloning. DANGEROUS! More...

	~Polynomial ()
	Destructor. More...

unsigned int	degree () const
	Return degree of polynomial. More...

void	setDegree (unsigned int deg)
	Set degree of polynomial to `deg`. More...

Teuchos::RCP< CoeffT >	getCoefficient (unsigned int i)
	Return ref-count pointer to coefficient `i`. More...

Teuchos::RCP< const CoeffT >	getCoefficient (unsigned int i) const
	Return ref-count pointer to constant coefficient `i`. More...

void	setCoefficient (unsigned int i, const CoeffT &v)
	Set coefficient `i` to `c`. More...

void	setCoefficientPtr (unsigned int i, const Teuchos::RCP< CoeffT > &c_ptr)
	Set pointer for coefficient `i` to `c_ptr`. DANGEROUS! More...

void	evaluate (typename Teuchos::Polynomial< CoeffT >::scalar_type &t, CoeffT x, CoeffT xdot=NULL) const
	Evaluate polynomial and possibly its derivative at time `t`. More...

Public Member Functions inherited from Teuchos::Describable
virtual std::string	description () const
	Return a simple one-line description of this object. More...

virtual void	describe (FancyOStream &out, const EVerbosityLevel verbLevel=verbLevel_default) const
	Print the object with some verbosity level to a FancyOStream. More...

void	describe (std::ostream &out, const EVerbosityLevel verbLevel=verbLevel_default) const
	Version of describe() that takes an std::ostream instead of a FancyOStream. More...

virtual	~Describable ()
	Destructor (marked virtual for memory safety of derived classes). More...

Public Member Functions inherited from Teuchos::LabeledObject
	LabeledObject ()
	Construct with an empty label. More...

virtual	~LabeledObject ()

virtual void	setObjectLabel (const std::string &objectLabel)
	Set the object label (see LabeledObject). More...

virtual std::string	getObjectLabel () const
	Get the object label (see LabeledObject). More...

Protected Attributes
unsigned int	d
	Degree of polynomial. More...

unsigned int	sz
	Size of polynomial (may be > d) More...

std::vector< Teuchos::RCP < CoeffT > >	coeff
	Vector of polynomial coefficients. More...

Additional Inherited Members
Static Public Attributes inherited from Teuchos::Describable
static const EVerbosityLevel	verbLevel_default = VERB_DEFAULT
	Default value for the `verbLevel` argument of describe(). More...

Related Functions inherited from Teuchos::Describable
DescribableStreamManipulatorState	describe (const Describable &describable, const EVerbosityLevel verbLevel=Describable::verbLevel_default)
	Describable output stream manipulator. More...

std::ostream &	operator<< (std::ostream &os, const DescribableStreamManipulatorState &d)
	Output stream operator for Describable manipulator. More...

Detailed Description

template<typename CoeffT>
class Teuchos::Polynomial< CoeffT >

Lightweight container class to represent a simple polynomial.

This class represents a simple polynomial of the form:

$x(t) = \sum_{i=0}^d x_i t^i$

where $d$ is the degree of the polynomial and $t$ is a scalar. The coefficients $x_i$ , $i=0,\dots,d$ can be scalars, vectors, operators, etc., any type that can implement Teuchos::PolynomialTraits. A template specialization of Teuchos::PolynomialTraits must be provided for the coefficient type, however Teuchos::PolynomailTraits does provide a default template definition for scalars.

This class provides methods for creating a polynomial of some degree, setting and retreiving coefficients, and evaluating the polynomial and its derivative at some value $t$ .

Definition at line 37 of file Teuchos_PolynomialDecl.hpp.

Member Typedef Documentation

template<typename CoeffT>

typedef CoeffT Teuchos::Polynomial< CoeffT >::coeff_type

Typename of coefficients.

Definition at line 41 of file Teuchos_PolynomialDecl.hpp.

template<typename CoeffT>

typedef Teuchos::PolynomialTraits<coeff_type>::scalar_type Teuchos::Polynomial< CoeffT >::scalar_type

Typename of scalars.

Definition at line 44 of file Teuchos_PolynomialDecl.hpp.

Constructor & Destructor Documentation

template<typename CoeffT >

Teuchos::Polynomial< CoeffT >::Polynomial	(	unsigned int	deg,
		const CoeffT &	cloneCoeff,
		unsigned int	reserve = `0`
	)

Create a polynomial of degree deg.

If reserve > deg, a polynomial of degree deg will be created, but space for reserve + 1 coefficients will be created to allow future increases in the degree of the polynomial to be more efficient. A clone of cloneCoeff will be placed at each coefficient.

Definition at line 17 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

Teuchos::Polynomial< CoeffT >::Polynomial	(	unsigned int	deg,
		unsigned int	reserve = `0`
	)

Create a polynomial of degree deg without cloning. DANGEROUS!

In this version of the constructor, no clone object is provided, and therefore no storage will be created for each coefficient. In this case, setCoefficientPtr() below should be used to set each coefficient pointer to a valid cofficient. This constructor exists to be able to create an efficient "view" of another polynomial.

Definition at line 33 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

Teuchos::Polynomial< CoeffT >::~Polynomial ( )

Destructor.

Definition at line 46 of file Teuchos_Polynomial.hpp.

Member Function Documentation

template<typename CoeffT>

unsigned int Teuchos::Polynomial< CoeffT >::degree ( ) const

inline

Return degree of polynomial.

Definition at line 70 of file Teuchos_PolynomialDecl.hpp.

template<typename CoeffT >

void Teuchos::Polynomial< CoeffT >::setDegree ( unsigned int deg )

Set degree of polynomial to deg.

Definition at line 52 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

Teuchos::RCP< CoeffT > Teuchos::Polynomial< CoeffT >::getCoefficient ( unsigned int i )

Return ref-count pointer to coefficient i.

Definition at line 67 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

Teuchos::RCP< const CoeffT > Teuchos::Polynomial< CoeffT >::getCoefficient ( unsigned int i ) const

Return ref-count pointer to constant coefficient i.

Definition at line 81 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

void Teuchos::Polynomial< CoeffT >::setCoefficient	(	unsigned int	i,
		const CoeffT &	v
	)

Set coefficient i to c.

Definition at line 95 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

void Teuchos::Polynomial< CoeffT >::setCoefficientPtr	(	unsigned int	i,
		const Teuchos::RCP< CoeffT > &	c_ptr
	)

Set pointer for coefficient i to c_ptr. DANGEROUS!

Directly set the coefficient pointer to c_ptr. This method should be used with care since future calls to setCoefficient(i,c) will also modify the coefficient pointed to c_ptr. However, in certain situations it is necessary to do this for efficiency.

Definition at line 113 of file Teuchos_Polynomial.hpp.

template<typename CoeffT >

void Teuchos::Polynomial< CoeffT >::evaluate	(	typename Teuchos::Polynomial< CoeffT >::scalar_type &	t,
		CoeffT *	x,
		CoeffT *	xdot = `NULL`
	)		const

Evaluate polynomial and possibly its derivative at time t.

The value of the polynomial at t is computed and stored in *x. If xdot is not NULL, the derivative with respect to t is evaluated and stored in *xdot.

Horner's method is used to efficiently evaluate the polynomial and its derivative.

Definition at line 129 of file Teuchos_Polynomial.hpp.

Member Data Documentation

template<typename CoeffT>

unsigned int Teuchos::Polynomial< CoeffT >::d

protected

Degree of polynomial.

Definition at line 119 of file Teuchos_PolynomialDecl.hpp.

template<typename CoeffT>

unsigned int Teuchos::Polynomial< CoeffT >::sz

protected

Size of polynomial (may be > d)

Definition at line 122 of file Teuchos_PolynomialDecl.hpp.

template<typename CoeffT>

std::vector< Teuchos::RCP<CoeffT> > Teuchos::Polynomial< CoeffT >::coeff

protected

Vector of polynomial coefficients.

coeff[i] corresponds to the degree i term, i=0,...,d

Definition at line 128 of file Teuchos_PolynomialDecl.hpp.

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

Public Types

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

template<typename CoeffT> class Teuchos::Polynomial< CoeffT >

Member Typedef Documentation

Constructor & Destructor Documentation

Member Function Documentation

Member Data Documentation

template<typename CoeffT>
class Teuchos::Polynomial< CoeffT >