An owning class to represent a fixed_point number in device memory. More...

#include <scalar.hpp>

Inheritance diagram for cudf::fixed_point_scalar< T >:

Public Types
using	rep_type = typename T::rep
	The representation type of the fixed_point number.

using	value_type = T
	The value type of the fixed_point number.

Public Member Functions
	fixed_point_scalar (fixed_point_scalar &&other)=default
	Move constructor for fixed_point_scalar. More...

fixed_point_scalar &	operator= (fixed_point_scalar const &other)=delete

fixed_point_scalar &	operator= (fixed_point_scalar &&other)=delete

	fixed_point_scalar (fixed_point_scalar const &other, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new fixed_point scalar object by deep copying another. More...

	fixed_point_scalar (rep_type value, numeric::scale_type scale, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new fixed_point scalar object from already shifted value and scale. More...

	fixed_point_scalar (rep_type value, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new fixed_point scalar object from a value and default 0-scale. More...

	fixed_point_scalar (T value, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new fixed_point scalar object from a fixed_point number. More...

	fixed_point_scalar (rmm::device_scalar< rep_type > &&data, numeric::scale_type scale, bool is_valid=true, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new fixed_point scalar object from existing device memory. More...

rep_type	value (rmm::cuda_stream_view stream=cudf::get_default_stream()) const
	Get the value of the scalar. More...

T	fixed_point_value (rmm::cuda_stream_view stream=cudf::get_default_stream()) const
	Get the decimal32, decimal64 or decimal128. More...

	operator value_type () const
	Explicit conversion operator to get the value of the scalar on the host.

rep_type *	data ()
	Returns a raw pointer to the value in device memory. More...

rep_type const *	data () const
	Returns a const raw pointer to the value in device memory. More...

Public Member Functions inherited from cudf::scalar
scalar &	operator= (scalar const &other)=delete

scalar &	operator= (scalar &&other)=delete

data_type	type () const noexcept
	Returns the scalar's logical value type. More...

void	set_valid_async (bool is_valid, rmm::cuda_stream_view stream=cudf::get_default_stream())
	Updates the validity of the value. More...

bool	is_valid (rmm::cuda_stream_view stream=cudf::get_default_stream()) const
	Indicates whether the scalar contains a valid value. More...

bool *	validity_data ()
	Returns a raw pointer to the validity bool in device memory. More...

bool const *	validity_data () const
	Return a const raw pointer to the validity bool in device memory. More...

Protected Attributes
rmm::device_scalar< rep_type >	_data
	device memory containing the value

Protected Attributes inherited from cudf::scalar
data_type	_type {type_id::EMPTY}
	Logical type of value in the scalar.

rmm::device_scalar< bool >	_is_valid
	Device bool signifying validity.

Additional Inherited Members
Protected Member Functions inherited from cudf::scalar
	scalar (scalar &&other)=default
	Move constructor for scalar. More...

	scalar (scalar const &other, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new scalar object by deep copying another. More...

	scalar (data_type type, bool is_valid=false, rmm::cuda_stream_view stream=cudf::get_default_stream(), rmm::device_async_resource_ref mr=rmm::mr::get_current_device_resource())
	Construct a new scalar object. More...

Detailed Description

template<typename T>
class cudf::fixed_point_scalar< T >

An owning class to represent a fixed_point number in device memory.

Template Parameters

T	the data type of the fixed_point number.

Definition at line 304 of file scalar.hpp.

Constructor & Destructor Documentation

◆ fixed_point_scalar() [1/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar ( fixed_point_scalar< T > && other )

default

Move constructor for fixed_point_scalar.

Parameters

other The other fixed_point_scalar to move from.

◆ fixed_point_scalar() [2/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar	(	fixed_point_scalar< T > const &	other,
		rmm::cuda_stream_view	stream = `cudf::get_default_stream()`,
		rmm::device_async_resource_ref	mr = `rmm::mr::get_current_device_resource()`
	)

Construct a new fixed_point scalar object by deep copying another.

Parameters

other	The scalar to copy.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

◆ fixed_point_scalar() [3/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar	(	rep_type	value,
		numeric::scale_type	scale,
		bool	is_valid = `true`,
		rmm::cuda_stream_view	stream = `cudf::get_default_stream()`,
		rmm::device_async_resource_ref	mr = `rmm::mr::get_current_device_resource()`
	)

Construct a new fixed_point scalar object from already shifted value and scale.

Parameters

value	The initial shifted value of the fixed_point scalar.
scale	The scale of the fixed_point scalar.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

◆ fixed_point_scalar() [4/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar	(	rep_type	value,
		bool	is_valid = `true`,
		rmm::cuda_stream_view	stream = `cudf::get_default_stream()`,
		rmm::device_async_resource_ref	mr = `rmm::mr::get_current_device_resource()`
	)

Construct a new fixed_point scalar object from a value and default 0-scale.

Parameters

value	The initial value of the fixed_point scalar.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

◆ fixed_point_scalar() [5/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar	(	T	value,
		bool	is_valid = `true`,
		rmm::cuda_stream_view	stream = `cudf::get_default_stream()`,
		rmm::device_async_resource_ref	mr = `rmm::mr::get_current_device_resource()`
	)

Construct a new fixed_point scalar object from a fixed_point number.

Parameters

value	The fixed_point number from which the fixed_point scalar will be initialized.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

◆ fixed_point_scalar() [6/6]

template<typename T >

cudf::fixed_point_scalar< T >::fixed_point_scalar	(	rmm::device_scalar< rep_type > &&	data,
		numeric::scale_type	scale,
		bool	is_valid = `true`,
		rmm::cuda_stream_view	stream = `cudf::get_default_stream()`,
		rmm::device_async_resource_ref	mr = `rmm::mr::get_current_device_resource()`
	)

Construct a new fixed_point scalar object from existing device memory.

Parameters

data	The scalar's data in device memory.
scale	The scale of the fixed_point scalar.
is_valid	Whether the value held by the scalar is valid.
stream	CUDA stream used for device memory operations.
mr	Device memory resource to use for device memory allocation.

Member Function Documentation

◆ data() [1/2]

template<typename T >

rep_type* cudf::fixed_point_scalar< T >::data ( )

Returns a raw pointer to the value in device memory.

Returns: A raw pointer to the value in device memory

◆ data() [2/2]

template<typename T >

rep_type const* cudf::fixed_point_scalar< T >::data ( ) const

Returns a const raw pointer to the value in device memory.

Returns: a const raw pointer to the value in device memory

◆ fixed_point_value()

template<typename T >

T cudf::fixed_point_scalar< T >::fixed_point_value ( rmm::cuda_stream_view stream = cudf::get_default_stream() ) const

Get the decimal32, decimal64 or decimal128.

Parameters

stream CUDA stream used for device memory operations.

Returns: The decimal32, decimal64 or decimal128 value

◆ value()

template<typename T >

rep_type cudf::fixed_point_scalar< T >::value ( rmm::cuda_stream_view stream = cudf::get_default_stream() ) const

Get the value of the scalar.

Parameters

stream CUDA stream used for device memory operations.

Returns: The value of the scalar

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

scalar.hpp

Public Types

Public Member Functions

Protected Attributes

Additional Inherited Members

Detailed Description

template<typename T> class cudf::fixed_point_scalar< T >

Constructor & Destructor Documentation

◆ fixed_point_scalar() [1/6]

◆ fixed_point_scalar() [2/6]

◆ fixed_point_scalar() [3/6]

◆ fixed_point_scalar() [4/6]

◆ fixed_point_scalar() [5/6]

◆ fixed_point_scalar() [6/6]

Member Function Documentation

◆ data() [1/2]

◆ data() [2/2]

◆ fixed_point_value()

◆ value()

template<typename T>
class cudf::fixed_point_scalar< T >