Sacado::Fad::ViewStorage< T, static_length, static_stride, U > Class Template Reference

Derivative array storage class that is a view into a contiguous memory allocation. It does not provide proper value semantics and thus should not be used in a general-purpose scalar type. More...

#include <Sacado_Fad_ViewStorage.hpp>

Collaboration diagram for Sacado::Fad::ViewStorage< T, static_length, static_stride, U >:

Public Types
typedef T	value_type

Public Member Functions
template<typename S >
	ViewStorage (const S &x, SACADO_ENABLE_VALUE_CTOR_DECL)
	Default constructor (needed to satisfy interface)
	ViewStorage (const int sz, const T &x, const DerivInit zero_out=InitDerivArray)
	Constructor with size sz (needed to satisfy interface)
	ViewStorage (T *v, const int arg_size=0, const int arg_stride=0)
	Constructor.
	ViewStorage (T *arg_dx, T *arg_val, const int arg_size=0, const int arg_stride=0)
	Constructor.
	ViewStorage (const ViewStorage &x)
	Copy constructor.
	~ViewStorage ()
	Destructor.
ViewStorage &	operator= (const ViewStorage &x)
	Assignment.
int	size () const
	Returns number of derivative components.
int	length () const
	Returns array length.
void	resize (int sz)
	Resize the derivative array to sz. More...
void	resizeAndZero (int)
	Resize the derivative array to sz. More...
void	expand (int sz)
	Expand derivative array to size sz.
void	zero ()
	Zero out derivative array.
const T &	val () const
	Returns value.
T &	val ()
	Returns value.
const T *	dx () const
	Returns derivative array.
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.

Protected Attributes
const mpl::integral_nonzero_constant < int, static_length >	sz_
	Derivative array size.
const mpl::integral_nonzero_constant < int, static_stride >	stride_
	Derivative array stride.
T *	val_
	Value.
T *	dx_
	Derivative array.

Detailed Description

template<typename T, unsigned static_length, unsigned static_stride, typename U>
class Sacado::Fad::ViewStorage< T, static_length, static_stride, U >

Derivative array storage class that is a view into a contiguous memory allocation. It does not provide proper value semantics and thus should not be used in a general-purpose scalar type.

Member Function Documentation

template<typename T , unsigned static_length, unsigned static_stride, typename U >

void Sacado::Fad::ViewStorage< T, static_length, static_stride, U >::resize ( int  sz )

inline

Resize the derivative array to sz.

Since we can't actually resize, we check for resizes to zero, which signify assigning a constant. Thus we zero out the derivative components.

References Sacado::Fad::ViewStorage< T, static_length, static_stride, U >::dx_, Sacado::Fad::ViewStorage< T, static_length, static_stride, U >::stride_, Sacado::ds_array< T, isScalar >::strided_zero(), and Sacado::Fad::ViewStorage< T, static_length, static_stride, U >::sz_.

template<typename T , unsigned static_length, unsigned static_stride, typename U >

void Sacado::Fad::ViewStorage< T, static_length, static_stride, U >::resizeAndZero ( int  )

inline

Resize the derivative array to sz.

We don't do anything here as this is used in the context of resizing the derivative array to zero and then back to some size > 0. Instead we zero out components when it is resized to zero above.

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

• Sacado_Fad_ViewStorage.hpp