cpc_union_alloc< A > Class Template Reference

High performance C++ implementation of Compressed Probabilistic Counting (CPC) Union. More...

#include <cpc_union.hpp>

Public Member Functions
	cpc_union_alloc (uint8_t lg_k=cpc_constants::DEFAULT_LG_K, uint64_t seed=DEFAULT_SEED, const A &allocator=A())
	Creates an instance of the union given the lg_k parameter and hash seed.
	cpc_union_alloc (const cpc_union_alloc< A > &other)
	Copy constructor.
	cpc_union_alloc (cpc_union_alloc< A > &&other) noexcept
	Move constructor.
cpc_union_alloc< A > &	operator= (const cpc_union_alloc< A > &other)
	Copy assignment.
cpc_union_alloc< A > &	operator= (cpc_union_alloc< A > &&other) noexcept
	Move assignment.
void	update (const cpc_sketch_alloc< A > &sketch)
	This method is to update the union with a given sketch (lvalue).
void	update (cpc_sketch_alloc< A > &&sketch)
	This method is to update the union with a given sketch (rvalue).
cpc_sketch_alloc< A >	get_result () const
	This method produces a copy of the current state of the union as a sketch.

Detailed Description

template<typename A>
class datasketches::cpc_union_alloc< A >

High performance C++ implementation of Compressed Probabilistic Counting (CPC) Union.

author Kevin Lang author Alexander Saydakov

Constructor & Destructor Documentation

cpc_union_alloc() [1/3]

template<typename A>

cpc_union_alloc ( uint8_t lg_k = cpc_constants::DEFAULT_LG_K, uint64_t seed = DEFAULT_SEED, const A & allocator = A() )

explicit

Creates an instance of the union given the lg_k parameter and hash seed.

Parameters

lg_k	base 2 logarithm of the number of bins in the sketch
seed	for hash function
allocator	instance of an allocator

cpc_union_alloc() [2/3]

template<typename A>

cpc_union_alloc

(

const cpc_union_alloc< A > &

other

)

Copy constructor.

Parameters

other

union to be copied

cpc_union_alloc() [3/3]

template<typename A>

cpc_union_alloc ( cpc_union_alloc< A > && other )

noexcept

Move constructor.

Parameters

other

union to be moved

Member Function Documentation

operator=() [1/2]

template<typename A>

cpc_union_alloc< A > & operator=

(

const cpc_union_alloc< A > &

other

)

Copy assignment.

Parameters

other

union to be copied

Returns

reference to this union

operator=() [2/2]

template<typename A>

cpc_union_alloc< A > & operator= ( cpc_union_alloc< A > && other )

noexcept

Move assignment.

Parameters

other

union to be moved

Returns

reference to this union

update() [1/2]

template<typename A>

void update

(

const cpc_sketch_alloc< A > &

sketch

)

This method is to update the union with a given sketch (lvalue).

Parameters

sketch

to update the union with

update() [2/2]

template<typename A>

void update

(

cpc_sketch_alloc< A > &&

sketch

)

This method is to update the union with a given sketch (rvalue).

Parameters

sketch

to update the union with

get_result()

template<typename A>

cpc_sketch_alloc< A > get_result

(

)

const

This method produces a copy of the current state of the union as a sketch.

Returns

the result of the union

---

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

• cpc/include/cpc_sketch.hpp
• cpc/include/cpc_union.hpp
• cpc/include/cpc_union_impl.hpp