All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
Public Types | Public Member Functions | Private Types | Private Attributes | List of all members
blaze::DVecAbsExpr< VT, TF > Class Template Reference

Expression object for the dense vector abs() function.The DVecAbsExpr class represents the compile time expression for the calculation of the absolute value of each element of a dense vector via the abs() function. More...

#include <DVecAbsExpr.h>

Inherits blaze::DenseVector< DVecAbsExpr< VT, TF >, TF >, blaze::VecAbsExpr, and blaze::Computation.

Public Types

enum  { vectorizable = 0 }
 Compilation switch for the expression template evaluation strategy.
 
typedef DVecAbsExpr< VT, TF > This
 Type of this DVecAbsExpr instance.
 
typedef RT ResultType
 Result type for expression template evaluations.
 
typedef TT TransposeType
 Transpose type for expression template evaluations.
 
typedef ET ElementType
 Resulting element type.
 
typedef const SelectType
< returnExpr, ExprReturnType,
ElementType >::Type 
ReturnType
 Return type for expression template evaluations.
 
typedef SelectType< useAssign,
const ResultType, const
DVecAbsExpr & >::Type 
CompositeType
 Data type for composite expression templates.
 
typedef SelectType
< IsExpression< VT >::value,
const VT, const VT & >::Type 
Operand
 Composite data type of the dense vector expression.
 
typedef VT VectorType
 Type of the vector.
 

Public Member Functions

 DVecAbsExpr (const VT &dv)
 Constructor for the DVecAbsExpr class. More...
 
ReturnType operator[] (size_t index) const
 Subscript operator for the direct access to the vector elements. More...
 
size_t size () const
 Returns the current size/dimension of the vector. More...
 
Operand operand () const
 Returns the dense vector operand. More...
 
template<typename T >
bool canAlias (const T *alias) const
 Returns whether the expression can alias with the given address alias. More...
 
template<typename T >
bool isAliased (const T *alias) const
 Returns whether the expression is aliased with the given address alias. More...
 
VectorTypeoperator~ ()
 Conversion operator for non-constant vectors. More...
 
const VectorTypeoperator~ () const
 Conversion operator for constant vectors. More...
 

Private Types

enum  { returnExpr = !IsTemporary<RN>::value }
 Compilation switch for the selection of the subscript operator return type. More...
 
enum  { useAssign = RequiresEvaluation<VT>::value }
 Compilation switch for the evaluation strategy of the absolute value expression. More...
 
typedef VT::ResultType RT
 Result type of the dense vector expression.
 
typedef VT::ReturnType RN
 Return type of the dense vector expression.
 
typedef VT::CompositeType CT
 Composite type of the dense vector expression.
 
typedef VT::TransposeType TT
 Transpose type of the dense vector expression.
 
typedef VT::ElementType ET
 Element type of the dense vector expression.
 
typedef AbsExprTrait< RN >::Type ExprReturnType
 Expression return type for the subscript operator.
 

Private Attributes

Operand dv_
 Dense vector of the absolute value expression.
 

Detailed Description

template<typename VT, bool TF>
class blaze::DVecAbsExpr< VT, TF >

Expression object for the dense vector abs() function.

The DVecAbsExpr class represents the compile time expression for the calculation of the absolute value of each element of a dense vector via the abs() function.

Member Enumeration Documentation

template<typename VT , bool TF>
anonymous enum
private

Compilation switch for the selection of the subscript operator return type.

The returnExpr compile time constant expression is a compilation switch for the selection of the ReturnType. If the vector operand returns a temporary vector or matrix, returnExpr will be set to false and the subscript operator will return it's result by value. Otherwise returnExpr will be set to true and the subscript operator may return it's result as an expression.

template<typename VT , bool TF>
anonymous enum
private

Compilation switch for the evaluation strategy of the absolute value expression.

The useAssign compile time constant expression represents a compilation switch for the evaluation strategy of the absolute value expression. In case the given dense vector expression of type VT requires an intermediate evaluation, useAssign will be set to 1 and the absolute value expression will be evaluated via the assign function family. Otherwise useAssign will be set to 0 and the expression will be evaluated via the subscript operator.

Constructor & Destructor Documentation

template<typename VT , bool TF>
blaze::DVecAbsExpr< VT, TF >::DVecAbsExpr ( const VT &  dv)
inlineexplicit

Constructor for the DVecAbsExpr class.

Parameters
dvThe dense vector operand of the absolute value expression.

Member Function Documentation

template<typename VT , bool TF>
template<typename T >
bool blaze::DVecAbsExpr< VT, TF >::canAlias ( const T *  alias) const
inline

Returns whether the expression can alias with the given address alias.

Parameters
aliasThe alias to be checked.
Returns
true in case the expression can alias, false otherwise.
template<typename VT , bool TF>
template<typename T >
bool blaze::DVecAbsExpr< VT, TF >::isAliased ( const T *  alias) const
inline

Returns whether the expression is aliased with the given address alias.

Parameters
aliasThe alias to be checked.
Returns
true in case an alias effect is detected, false otherwise.
template<typename VT , bool TF>
Operand blaze::DVecAbsExpr< VT, TF >::operand ( ) const
inline

Returns the dense vector operand.

Returns
The dense vector operand.
template<typename VT , bool TF>
ReturnType blaze::DVecAbsExpr< VT, TF >::operator[] ( size_t  index) const
inline

Subscript operator for the direct access to the vector elements.

Parameters
indexAccess index. The index has to be in the range $[0..N-1]$.
Returns
The resulting value.
template<typename , bool >
VectorType& blaze::Vector< typename, bool >::operator~ ( )
inlineinherited

Conversion operator for non-constant vectors.

Returns
Reference of the actual type of the vector.
template<typename , bool >
const VectorType& blaze::Vector< typename, bool >::operator~ ( ) const
inlineinherited

Conversion operator for constant vectors.

Returns
Const reference of the actual type of the vector.
template<typename VT , bool TF>
size_t blaze::DVecAbsExpr< VT, TF >::size ( ) const
inline

Returns the current size/dimension of the vector.

Returns
The size of the vector.

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