FloatArray Functions

Functions
bool	wpi::nt::SetFloatArray (NT_Handle pubentry, std::span< const float > value, int64_t time=0)
	Publish a new value.
bool	wpi::nt::SetDefaultFloatArray (NT_Handle pubentry, std::span< const float > defaultValue)
	Publish a default value.
std::vector< float >	wpi::nt::GetFloatArray (NT_Handle subentry, std::span< const float > defaultValue)
	Get the last published value.
TimestampedFloatArray	wpi::nt::GetAtomicFloatArray (NT_Handle subentry, std::span< const float > defaultValue)
	Get the last published value along with its timestamp.
std::vector< TimestampedFloatArray >	wpi::nt::ReadQueueFloatArray (NT_Handle subentry)
	Get an array of all value changes since the last call to ReadQueue.
std::vector< std::vector< float > >	wpi::nt::ReadQueueValuesFloatArray (NT_Handle subentry)
	Get an array of all value changes since the last call to ReadQueue.
std::span< float >	wpi::nt::GetFloatArray (NT_Handle subentry, wpi::util::SmallVectorImpl< float > &buf, std::span< const float > defaultValue)
TimestampedFloatArrayView	wpi::nt::GetAtomicFloatArray (NT_Handle subentry, wpi::util::SmallVectorImpl< float > &buf, std::span< const float > defaultValue)

Detailed Description

Function Documentation

GetAtomicFloatArray() [1/2]

TimestampedFloatArray wpi::nt::GetAtomicFloatArray	(	NT_Handle	subentry,
		std::span< const float >	defaultValue )

Get the last published value along with its timestamp.

If no value has been published, returns the passed defaultValue and a timestamp of 0.

Parameters

subentry	subscriber or entry handle
defaultValue	default value to return if no value has been published

Returns

timestamped value

GetAtomicFloatArray() [2/2]

TimestampedFloatArrayView wpi::nt::GetAtomicFloatArray	(	NT_Handle	subentry,
		wpi::util::SmallVectorImpl< float > &	buf,
		std::span< const float >	defaultValue )

GetFloatArray() [1/2]

std::vector< float > wpi::nt::GetFloatArray	(	NT_Handle	subentry,
		std::span< const float >	defaultValue )

Get the last published value.

If no value has been published, returns the passed defaultValue.

Parameters

subentry	subscriber or entry handle
defaultValue	default value to return if no value has been published

Returns

value

GetFloatArray() [2/2]

std::span< float > wpi::nt::GetFloatArray	(	NT_Handle	subentry,
		wpi::util::SmallVectorImpl< float > &	buf,
		std::span< const float >	defaultValue )

ReadQueueFloatArray()

std::vector< TimestampedFloatArray > wpi::nt::ReadQueueFloatArray

(

NT_Handle

subentry

)

Get an array of all value changes since the last call to ReadQueue.

Also provides a timestamp for each value.

Note

The "poll storage" subscribe option can be used to set the queue depth.

Parameters

subentry

subscriber or entry handle

Returns

Array of timestamped values; empty array if no new changes have been published since the previous call.

ReadQueueValuesFloatArray()

std::vector< std::vector< float > > wpi::nt::ReadQueueValuesFloatArray

(

NT_Handle

subentry

)

Get an array of all value changes since the last call to ReadQueue.

Note

The "poll storage" subscribe option can be used to set the queue depth.

Parameters

subentry

subscriber or entry handle

Returns

Array of values; empty array if no new changes have been published since the previous call.

SetDefaultFloatArray()

bool wpi::nt::SetDefaultFloatArray	(	NT_Handle	pubentry,
		std::span< const float >	defaultValue )

Publish a default value.

On reconnect, a default value will never be used in preference to a published value.

Parameters

pubentry	publisher or entry handle
defaultValue	default value

SetFloatArray()

bool wpi::nt::SetFloatArray	(	NT_Handle	pubentry,
		std::span< const float >	value,
		int64_t	time = 0 )

Publish a new value.

Parameters

pubentry	publisher or entry handle
value	value to publish
time	timestamp; 0 indicates current NT time should be used