std::mask_array< _Tp > Class Template Reference

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

#include <mask_array.h>

List of all members.

Public Types
typedef _Tp	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 &)
void	operator= (const valarray< _Tp > &) const
void	operator *= (const valarray< _Tp > &) const
	Multiply slice elements by corresponding elements of v.
void	operator/= (const valarray< _Tp > &) const
	Divide slice elements by corresponding elements of v.
void	operator%= (const valarray< _Tp > &) const
	Modulo slice elements by corresponding elements of v.
void	operator+= (const valarray< _Tp > &) const
	Add corresponding elements of v to slice elements.
void	operator-= (const valarray< _Tp > &) const
	Subtract corresponding elements of v from slice elements.
void	operator^= (const valarray< _Tp > &) const
	Logical xor slice elements with corresponding elements of v.
void	operator &= (const valarray< _Tp > &) const
	Logical and slice elements with corresponding elements of v.
void	operator|= (const valarray< _Tp > &) const
	Logical or slice elements with corresponding elements of v.
void	operator<<= (const valarray< _Tp > &) const
	Left shift slice elements by corresponding elements of v.
void	operator>>= (const valarray< _Tp > &) const
	Right shift slice elements by corresponding elements of v.
void	operator= (const _Tp &) const
	Assign all slice elements to t.
template<class _Dom> void	operator= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator *= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator/= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator%= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator+= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator-= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator^= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator &= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator|= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator<<= (const _Expr< _Dom, _Tp > &) const
template<class _Dom> void	operator>>= (const _Expr< _Dom, _Tp > &) const
Private Member Functions
	mask_array (_Array< _Tp >, size_t, _Array< bool >)
	mask_array ()
Private Attributes
const size_t	_M_sz
const _Array< bool >	_M_mask
const _Array< _Tp >	_M_array
Friends
class	valarray< _Tp >

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Detailed Description

template<class _Tp>
class std::mask_array< _Tp >

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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Member Typedef Documentation

template<class _Tp> typedef _Tp std::mask_array< _Tp >::value_type

Definition at line 64 of file mask_array.h.

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Constructor & Destructor Documentation

template<typename _Tp> std::mask_array< _Tp >::mask_array (  const mask_array< _Tp > &   )  [inline]

Copy constructor. Both slices refer to the same underlying array. Definition at line 139 of file mask_array.h.

template<typename _Tp> std::mask_array< _Tp >::mask_array (  _Array< _Tp >  , size_t  , _Array< bool >  )  [inline, private]

Definition at line 144 of file mask_array.h.

template<class _Tp> std::mask_array< _Tp >::mask_array (   )  [private]

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Member Function Documentation

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator &= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator &= (  const valarray< _Tp > &   )  const

Logical and slice elements with corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator *= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator *= (  const valarray< _Tp > &   )  const

Multiply slice elements by corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator%= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator%= (  const valarray< _Tp > &   )  const

Modulo slice elements by corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator+= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator+= (  const valarray< _Tp > &   )  const

Add corresponding elements of v to slice elements.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator-= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator-= (  const valarray< _Tp > &   )  const

Subtract corresponding elements of v from slice elements.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator/= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator/= (  const valarray< _Tp > &   )  const

Divide slice elements by corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator<<= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator<<= (  const valarray< _Tp > &   )  const

Left shift slice elements by corresponding elements of v.

template<typename _Tp> template<class _Ex> void std::mask_array< _Tp >::operator= (  const _Expr< _Dom, _Tp > &   )  const [inline]

Definition at line 169 of file mask_array.h. References std::__valarray_copy(), std::mask_array< _Tp >::_M_mask, and std::_Expr< _Clos, _Tp >::size().

template<typename _Tp> void std::mask_array< _Tp >::operator= (  const _Tp &   )  const [inline]

Assign all slice elements to t. Definition at line 158 of file mask_array.h. References std::__valarray_fill(), and std::mask_array< _Tp >::_M_mask.

template<typename _Tp> void std::mask_array< _Tp >::operator= (  const valarray< _Tp > &   )  const [inline]

Definition at line 163 of file mask_array.h. References std::__valarray_copy(), and std::mask_array< _Tp >::_M_mask.

template<typename _Tp> mask_array< _Tp > & std::mask_array< _Tp >::operator= (  const mask_array< _Tp > &   )  [inline]

Assignment operator. Assigns elements to corresponding elements of a. Definition at line 149 of file mask_array.h. References std::__valarray_copy(), std::mask_array< _Tp >::_M_array, and std::mask_array< _Tp >::_M_mask.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator>>= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator>>= (  const valarray< _Tp > &   )  const

Right shift slice elements by corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator^= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator^= (  const valarray< _Tp > &   )  const

Logical xor slice elements with corresponding elements of v.

template<class _Tp> template<class _Dom> void std::mask_array< _Tp >::operator|= (  const _Expr< _Dom, _Tp > &   )  const

template<class _Tp> void std::mask_array< _Tp >::operator|= (  const valarray< _Tp > &   )  const

Logical or slice elements with corresponding elements of v.

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Friends And Related Function Documentation

template<class _Tp> friend class valarray< _Tp > [friend]

Definition at line 127 of file mask_array.h.

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Member Data Documentation

template<class _Tp> const _Array<_Tp> std::mask_array< _Tp >::_M_array [private]

Definition at line 131 of file mask_array.h. Referenced by std::valarray< _Tp >::operator=(), std::mask_array< _Tp >::operator=(), and std::valarray< _Tp >::valarray().

template<class _Tp> const _Array<bool> std::mask_array< _Tp >::_M_mask [private]

Definition at line 130 of file mask_array.h. Referenced by std::valarray< _Tp >::operator=(), std::mask_array< _Tp >::operator=(), and std::valarray< _Tp >::valarray().

template<class _Tp> const size_t std::mask_array< _Tp >::_M_sz [private]

Definition at line 129 of file mask_array.h. Referenced by std::valarray< _Tp >::operator=().

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

• mask_array.h

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