std::mask_array< Type > Class Template Reference

Reference to selected subset of an array. More...

#include <mask_array.h>

Collaboration diagram for std::mask_array< Type >:

[legend]List of all members.

Public Types
typedef Type	value_type
Public Member Functions
	mask_array (const mask_array &)
	Copy constructor. Both slices refer to the same underlying array.
mask_array &	operator= (const mask_array &)
	of a.
void	operator= (const valarray< Type > &) const
void	operator *= (const valarray< Type > &) const
	Multiply slice elements by corresponding elements of v.
void	operator/= (const valarray< Type > &) const
	Divide slice elements by corresponding elements of v.
void	operator%= (const valarray< Type > &) const
	Modulo slice elements by corresponding elements of v.
void	operator+= (const valarray< Type > &) const
	Add corresponding elements of v to slice elements.
void	operator-= (const valarray< Type > &) const
	Subtract corresponding elements of v from slice elements.
void	operator^= (const valarray< Type > &) const
	Logical xor slice elements with corresponding elements of v.
void	operator &= (const valarray< Type > &) const
	Logical and slice elements with corresponding elements of v.
void	operator|= (const valarray< Type > &) const
	Logical or slice elements with corresponding elements of v.
void	operator<<= (const valarray< Type > &) const
	Left shift slice elements by corresponding elements of v.
void	operator>>= (const valarray< Type > &) const
	Right shift slice elements by corresponding elements of v.
void	operator= (const Type &) const
	Assign all slice elements to t.
template<class Dom>
void	operator= (const Expr< Dom, Type > &) const
Private Member Functions
	mask_array (Array< Type >, size_t, Array< bool >)
Private Attributes
const size_t	M_sz
const Array< bool >	M_mask
const Array< Type >	M_array
Friends
class	valarray< Type >

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Detailed Description

template<class Type>
class std::mask_array< Type >

Reference to selected subset of an array.

A mask_array is a reference to the actual elements of an array specified by a bitmask in the form of an array of bool. The way to get a mask_array is to call operator[](valarray<bool>) on a valarray. The returned mask_array then permits carrying operations out on the referenced subset of elements in the original valarray.

For example, if a mask_array is obtained using the array (false, true, false, true) as an argument, the mask array has two elements referring to array[1] and array[3] in the underlying array.

Parameters:

Tp

Element type.

Definition at line 61 of file mask_array.h.

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Constructor & Destructor Documentation

template<typename Type>

std::mask_array< Type >::mask_array

(

const mask_array< Type > &

)

[inline]

Copy constructor. Both slices refer to the same underlying array.

Definition at line 139 of file mask_array.h.

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Member Function Documentation

template<typename Type>

mask_array< Type > & std::mask_array< Type >::operator=

(

const mask_array< Type > &

)

[inline]

of a.

Definition at line 149 of file mask_array.h.

References std::__valarray_copy().

template<class Type>

void std::mask_array< Type >::operator *=

(

const valarray< Type > &

)

const

Multiply slice elements by corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator/=

(

const valarray< Type > &

)

const

Divide slice elements by corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator%=

(

const valarray< Type > &

)

const

Modulo slice elements by corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator+=

(

const valarray< Type > &

)

const

Add corresponding elements of v to slice elements.

template<class Type>

void std::mask_array< Type >::operator-=

(

const valarray< Type > &

)

const

Subtract corresponding elements of v from slice elements.

template<class Type>

void std::mask_array< Type >::operator^=

(

const valarray< Type > &

)

const

Logical xor slice elements with corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator &=

(

const valarray< Type > &

)

const

Logical and slice elements with corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator|=

(

const valarray< Type > &

)

const

Logical or slice elements with corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator<<=

(

const valarray< Type > &

)

const

Left shift slice elements by corresponding elements of v.

template<class Type>

void std::mask_array< Type >::operator>>=

(

const valarray< Type > &

)

const

Right shift slice elements by corresponding elements of v.

template<typename Type>

void std::mask_array< Type >::operator=

(

const Type &

)

const [inline]

Assign all slice elements to t.

Definition at line 158 of file mask_array.h.

References std::__valarray_fill().

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

• mask_array.h

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