BitArray< N > Class Template Reference

#include <AH/Containers/BitArray.hpp>

Detailed Description

template<uint16_t N>
class BitArray< N >

A class for arrays of bits.

Template Parameters

N	The number of bits.

Definition at line 21 of file BitArray.hpp.

Collaboration diagram for BitArray< N >:

Public Member Functions
bool	get (uint16_t bitIndex) const
	Get the value of the given bit. More...
void	set (uint16_t bitIndex)
	Set the value of the given bit to 1. More...
void	clear (uint16_t bitIndex)
	Clear the value of the given bit to 0. More...
void	set (uint16_t bitIndex, bool state)
	Set the value of the given bit to the given state. More...
uint16_t	safeIndex (uint16_t byteIndex) const
	Check the given byte index, and return it if it is within the bounds of the array, otherwise, throw an error, and return the last valid index. More...
const uint8_t &	getByte (uint16_t byteIndex) const
	Get the byte at the given index. More...
uint8_t &	getByte (uint16_t byteIndex)
	Get the byte at the given index. More...
void	setByte (uint16_t byteIndex, uint8_t value)
	Set the byte at the given index. More...
uint16_t	getBufferLength () const
	Get the buffer length in bytes. More...

Private Member Functions
uint16_t	getBufferIndex (uint16_t bitIndex) const
uint8_t	getBufferBit (uint16_t bitIndex) const
uint8_t	getBufferMask (uint16_t bitIndex) const

Private Attributes
uint8_t	buffer [bufferLength] = {}

Static Private Attributes
static constexpr uint16_t	bufferLength = (uint16_t)((N + 7) / 8)

Member Function Documentation

get()

bool get ( uint16_t  bitIndex ) const

inline

Get the value of the given bit.

Parameters

bitIndex

The (zero-based) index of the bit to read.

Definition at line 29 of file BitArray.hpp.

set() [1/2]

void set ( uint16_t  bitIndex )

inline

Set the value of the given bit to 1.

Parameters

bitIndex

The (zero-based) index of the bit to set.

Definition at line 39 of file BitArray.hpp.

clear()

void clear ( uint16_t  bitIndex )

inline

Clear the value of the given bit to 0.

Parameters

bitIndex

The (zero-based) index of the bit to clear.

Definition at line 49 of file BitArray.hpp.

set() [2/2]

void set ( uint16_t  bitIndex, bool  state  )

inline

Set the value of the given bit to the given state.

Parameters

bitIndex	The (zero-based) index of the bit to set.
state	The value to set the bit to.

Definition at line 61 of file BitArray.hpp.

safeIndex()

uint16_t safeIndex ( uint16_t  byteIndex ) const

inline

Check the given byte index, and return it if it is within the bounds of the array, otherwise, throw an error, and return the last valid index.

Parameters

byteIndex

The index to check.

Definition at line 73 of file BitArray.hpp.

getByte() [1/2]

const uint8_t & getByte ( uint16_t  byteIndex ) const

inline

Get the byte at the given index.

This function can be used to quickly access all of the bits, to send them out to a shift register, for example.

Note

No bounds checking is performed.

Parameters

byteIndex

The index of the byte within the array.

Definition at line 95 of file BitArray.hpp.

getByte() [2/2]

uint8_t & getByte ( uint16_t  byteIndex )

inline

Get the byte at the given index.

This function can be used to quickly access all of the bits, to send them out to a shift register, for example.

Note

No bounds checking is performed.

Parameters

byteIndex

The index of the byte within the array.

Definition at line 100 of file BitArray.hpp.

setByte()

void setByte ( uint16_t  byteIndex, uint8_t  value  )

inline

Set the byte at the given index.

This function can be used to quickly write all of the bits, when reading them in from an I/O expander, for example.

Note

No bounds checking is performed.

Parameters

byteIndex	The index of the byte within the array.
value	The byte to write.

Definition at line 118 of file BitArray.hpp.

getBufferLength()

uint16_t getBufferLength ( ) const

inline

Get the buffer length in bytes.

Definition at line 125 of file BitArray.hpp.

getBufferIndex()

uint16_t getBufferIndex ( uint16_t  bitIndex ) const

inlineprivate

Definition at line 128 of file BitArray.hpp.

getBufferBit()

uint8_t getBufferBit ( uint16_t  bitIndex ) const

inlineprivate

Definition at line 131 of file BitArray.hpp.

getBufferMask()

uint8_t getBufferMask ( uint16_t  bitIndex ) const

inlineprivate

Definition at line 132 of file BitArray.hpp.

Member Data Documentation

bufferLength

constexpr uint16_t bufferLength = (uint16_t)((N + 7) / 8)

staticconstexprprivate

Definition at line 136 of file BitArray.hpp.

buffer

uint8_t buffer[bufferLength] = {}

private

Definition at line 137 of file BitArray.hpp.

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

• BitArray.hpp