cudf::element_relational_comparator< Nullate > Class Template Reference

Performs a relational comparison between two elements in two columns. More...

Public Member Functions
	element_relational_comparator (Nullate has_nulls, column_device_view lhs, column_device_view rhs, null_order null_precedence)
	Construct type-dispatched function object for performing a relational comparison between two elements. More...
	element_relational_comparator (Nullate has_nulls, column_device_view lhs, column_device_view rhs)
	Construct type-dispatched function object for performing a relational comparison between two elements in two columns. More...
template<typename Element , std::enable_if_t< cudf::is_relationally_comparable< Element, Element >()> * = nullptr>
weak_ordering	operator() (size_type lhs_element_index, size_type rhs_element_index) const noexcept
	Performs a relational comparison between the specified elements. More...

Detailed Description

template<typename Nullate>
class cudf::element_relational_comparator< Nullate >

Performs a relational comparison between two elements in two columns.

Template Parameters

Nullate

A cudf::nullate type describing how to check for nulls.

Definition at line 283 of file row_operators.cuh.

Constructor & Destructor Documentation

element_relational_comparator() [1/2]

template<typename Nullate >

cudf::element_relational_comparator< Nullate >::element_relational_comparator ( Nullate  has_nulls, column_device_view  lhs, column_device_view  rhs, null_order  null_precedence  )

inline

Construct type-dispatched function object for performing a relational comparison between two elements.

Note

lhs and rhs may be the same.

Parameters

lhs	The column containing the first element
rhs	The column containing the second element (may be the same as lhs)
has_nulls	Indicates if either input column contains nulls.
null_precedence	Indicates how null values are ordered with other values

Definition at line 296 of file row_operators.cuh.

element_relational_comparator() [2/2]

template<typename Nullate >

cudf::element_relational_comparator< Nullate >::element_relational_comparator ( Nullate  has_nulls, column_device_view  lhs, column_device_view  rhs  )

inline

Construct type-dispatched function object for performing a relational comparison between two elements in two columns.

Parameters

has_nulls	Indicates if either input column contains nulls
lhs	The column containing the first element
rhs	The column containing the second element (may be the same as lhs)

Definition at line 312 of file row_operators.cuh.

Member Function Documentation

operator()()

template<typename Nullate >

template<typename Element , std::enable_if_t< cudf::is_relationally_comparable< Element, Element >()> * = nullptr>

weak_ordering cudf::element_relational_comparator< Nullate >::operator() ( size_type  lhs_element_index, size_type  rhs_element_index  ) const

inlinenoexcept

Performs a relational comparison between the specified elements.

Parameters

lhs_element_index	The index of the first element
rhs_element_index	The index of the second element

Returns

Indicates the relationship between the elements in the lhs and rhs columns.

Definition at line 329 of file row_operators.cuh.

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

• row_operators.cuh