Sacado::Fad::Expr< SFadExprTag< T, Num > > Class Template Reference

Expression template forward-mode AD class with static memory allocation. More...

#include <Sacado_Fad_SFad.hpp>

Collaboration diagram for Sacado::Fad::Expr< SFadExprTag< T, Num > >:

List of all members.

Public Types
typedef RemoveConst< T >::type	value_type
	Typename of values.
Public Member Functions
Initialization methods
	Expr ()
	Default constructor.
	Expr (const T &x)
	Constructor with supplied value x.
	Expr (const int sz, const T &x)
	Constructor with size sz and value x.
	Expr (const int sz, const int i, const T &x)
	Constructor with size sz, index i, and value x.
	Expr (const Expr &x)
	Copy constructor.
template<typename S >
	Expr (const Expr< S > &x)
	Copy constructor from any Expression object.
	~Expr ()
	Destructor.
void	diff (const int ith, const int n)
	Set Fad object as the ith independent variable.
void	resize (int sz)
	Resize derivative array to length sz.
void	expand (int sz)
	Expand derivative array to size sz.
void	zero ()
	Zero out the derivative array.
void	setUpdateValue (bool update_val)
	Set whether this Fad object should update values.
bool	updateValue () const
	Return whether this Fad object has an updated value.
template<typename S >
bool	isEqualTo (const Expr< S > &x) const
	Returns whether two Fad objects have the same values.
Value accessor methods
const T &	val () const
	Returns value.
T &	val ()
	Returns value.
Derivative accessor methods
int	size () const
	Returns number of derivative components.
int	availableSize () const
	Returns number of derivative components that can be stored without reallocation.
bool	hasFastAccess () const
	Returns true if derivative array is not empty.
bool	isPassive () const
	Returns true if derivative array is empty.
void	setIsConstant (bool is_const)
	Set whether variable is constant.
const T *	dx () const
	Returns derivative array.
const T &	dx (int i) const
	Returns derivative component i with bounds checking.
T &	fastAccessDx (int i)
	Returns derivative component i without bounds checking.
const T &	fastAccessDx (int i) const
	Returns derivative component i without bounds checking.
Assignment operators
Expr< SFadExprTag< T, Num > > &	operator= (const T &val)
	Assignment operator with constant right-hand-side.
Expr< SFadExprTag< T, Num > > &	operator= (const Expr< SFadExprTag< T, Num > > &x)
	Assignment with Expr right-hand-side.
template<typename S >
Expr< SFadExprTag< T, Num > > &	operator= (const Expr< S > &x)
	Assignment operator with any expression right-hand-side.
Unary operators
Expr< SFadExprTag< T, Num > > &	operator+= (const T &x)
	Addition-assignment operator with constant right-hand-side.
Expr< SFadExprTag< T, Num > > &	operator-= (const T &x)
	Subtraction-assignment operator with constant right-hand-side.
Expr< SFadExprTag< T, Num > > &	operator*= (const T &x)
	Multiplication-assignment operator with constant right-hand-side.
Expr< SFadExprTag< T, Num > > &	operator/= (const T &x)
	Division-assignment operator with constant right-hand-side.
template<typename S >
Expr< SFadExprTag< T, Num > > &	operator+= (const Expr< S > &x)
	Addition-assignment operator with Expr right-hand-side.
template<typename S >
Expr< SFadExprTag< T, Num > > &	operator-= (const Expr< S > &x)
	Subtraction-assignment operator with Expr right-hand-side.
template<typename S >
Expr< SFadExprTag< T, Num > > &	operator*= (const Expr< S > &x)
	Multiplication-assignment operator with Expr right-hand-side.
template<typename S >
Expr< SFadExprTag< T, Num > > &	operator/= (const Expr< S > &x)
	Division-assignment operator with Expr right-hand-side.
Protected Attributes
T	val_
	Value.
T	dx_ [Num]
	Derivatives.
bool	update_val_
	Update value.

---

Detailed Description

template<typename T, int Num>
class Sacado::Fad::Expr< SFadExprTag< T, Num > >

Expression template forward-mode AD class with static memory allocation.

This classes specializes Expr to SFad expressions.

---

Constructor & Destructor Documentation

template<typename T , int Num>

Sacado::Fad::Expr< SFadExprTag< T, Num > >::Expr

(

const T &

x

)

[inline]

Constructor with supplied value x.

Initializes value to x and derivative array is empty

template<typename T , int Num>

Sacado::Fad::Expr< SFadExprTag< T, Num > >::Expr	(	const int	sz,
		const T &	x
	)		[inline]

Constructor with size sz and value x.

Initializes value to x and derivative array 0 of length sz

template<typename T , int Num>

Sacado::Fad::Expr< SFadExprTag< T, Num > >::Expr	(	const int	sz,
		const int	i,
		const T &	x
	)		[inline]

Constructor with size sz, index i, and value x.

Initializes value to x and derivative array of length sz as row i of the identity matrix, i.e., sets derivative component i to 1 and all other's to zero.

---

Member Function Documentation

template<typename T , int Num>

void Sacado::Fad::Expr< SFadExprTag< T, Num > >::diff	(	const int	ith,
		const int	n
	)		[inline]

Set Fad object as the ith independent variable.

Sets the derivative array of length n to the ith row of the identity matrix and has the same affect as the Implementation(const int sz, const int i, const T & x) constructor.

template<typename T , int Num>

void Sacado::Fad::Expr< SFadExprTag< T, Num > >::expand

(

int

sz

)

[inline]

Expand derivative array to size sz.

Since the derivative array length is not dynamic, this method throws an error if compiled with SACADO_DEBUG defined.

template<typename T , int Num>

void Sacado::Fad::Expr< SFadExprTag< T, Num > >::resize

(

int

sz

)

[inline]

Resize derivative array to length sz.

Since the derivative array length is not dynamic, this method throws an error if compiled with SACADO_DEBUG defined.

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

• Sacado_Fad_SFad.hpp