Container of bits.

This class provides a simple container of bits. Each bit can be set and tested via the functions SetBitNumber and TestBitNumber.The default value of all bits is kFALSE. The size of the container is automatically extended when a bit number is either set or tested. To reduce the memory size of the container use the Compact function, this will discard the memory occupied by the upper bits that are 0.

Definition at line 29 of file TBits.h.

Classes
class	TReference

Public Member Functions
	TBits (UInt_t nbits=8)
	TBits constructor. All bits set to 0. More...

	TBits (const TBits &)
	TBits copy constructor. More...

virtual	~TBits ()
	TBits destructor. More...

void	Clear (Option_t *option="")
	Clear the value. More...

void	Compact ()
	Reduce the storage used by the object to a minimun. More...

UInt_t	CountBits (UInt_t startBit=0) const
	Return number of bits set to 1 starting at bit startBit. More...

UInt_t	FirstNullBit (UInt_t startBit=0) const
	Return position of first null bit (starting from position 0 and up) More...

UInt_t	FirstSetBit (UInt_t startBit=0) const
	Return position of first non null bit (starting from position 0 and up) More...

void	Get (Char_t *array) const
	Copy all the byes. More...

void	Get (UChar_t *array) const

void	Get (Short_t *array) const

void	Get (UShort_t *array) const

void	Get (Int_t *array) const

void	Get (UInt_t *array) const

void	Get (Long64_t *array) const

void	Get (ULong64_t *array) const

UInt_t	GetNbits () const

UInt_t	GetNbytes () const

UInt_t	LastNullBit (UInt_t startBit=999999999) const
	Return position of first null bit (starting from position 0 and up) More...

UInt_t	LastSetBit (UInt_t startBit=999999999) const
	Return position of first non null bit (starting from position 0 and up) More...

TBits &	operator &= (const TBits &rhs)

Bool_t	operator!= (const TBits &other) const

TBits	operator<< (UInt_t rhs)

TBits &	operator<<= (UInt_t rhs)

TBits &	operator= (const TBits &)
	TBits assignment operator. More...

Bool_t	operator== (const TBits &other) const

TBits	operator>> (UInt_t rhs)

TBits &	operator>>= (UInt_t rhs)

TBits::TReference	operator[] (UInt_t bitnumber)

Bool_t	operator[] (UInt_t bitnumber) const

TBits &	operator^= (const TBits &rhs)

TBits &	operator\|= (const TBits &rhs)

TBits	operator~ ()

void	Output (std::ostream &) const
	Print the value to the std::ostream. More...

void	Paint (Option_t *option="")
	Once implemented, it will draw the bit field as an histogram. More...

void	Print (Option_t *option="") const
	Print the list of active bits. More...

void	ResetAllBits (Bool_t value=kFALSE)
	Reset all bits to 0 (false). More...

void	ResetBitNumber (UInt_t bitnumber)

void	Set (UInt_t nbits, const Char_t *array)
	Set all the bytes. More...

void	Set (UInt_t nbits, const UChar_t *array)

void	Set (UInt_t nbits, const Short_t *array)

void	Set (UInt_t nbits, const UShort_t *array)

void	Set (UInt_t nbits, const Int_t *array)

void	Set (UInt_t nbits, const UInt_t *array)

void	Set (UInt_t nbits, const Long64_t *array)

void	Set (UInt_t nbits, const ULong64_t *array)

void	SetBitNumber (UInt_t bitnumber, Bool_t value=kTRUE)

Bool_t	TestBitNumber (UInt_t bitnumber) const

Public Member Functions inherited from TObject
	TObject ()
	TObject constructor. More...

	TObject (const TObject &object)
	TObject copy ctor. More...

virtual	~TObject ()
	TObject destructor. More...

void	AbstractMethod (const char *method) const
	Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...

virtual void	AppendPad (Option_t *option="")
	Append graphics object to current pad. More...

virtual void	Browse (TBrowser *b)
	Browse object. May be overridden for another default action. More...

virtual const char *	ClassName () const
	Returns name of class to which the object belongs. More...

virtual TObject *	Clone (const char *newname="") const
	Make a clone of an object using the Streamer facility. More...

virtual Int_t	Compare (const TObject *obj) const
	Compare abstract method. More...

virtual void	Copy (TObject &object) const
	Copy this to obj. More...

virtual void	Delete (Option_t *option="")
	Delete this object. More...

virtual Int_t	DistancetoPrimitive (Int_t px, Int_t py)
	Computes distance from point (px,py) to the object. More...

virtual void	Draw (Option_t *option="")
	Default Draw method for all objects. More...

virtual void	DrawClass () const
	Draw class inheritance tree of the class to which this object belongs. More...

virtual TObject *	DrawClone (Option_t *option="") const
	Draw a clone of this object in the current selected pad for instance with: `gROOT->SetSelectedPad(gPad)`. More...

virtual void	Dump () const
	Dump contents of object on stdout. More...

virtual void	Error (const char method, const char msgfmt,...) const
	Issue error message. More...

virtual void	Execute (const char method, const char params, Int_t *error=0)
	Execute method on this object with the given parameter string, e.g. More...

virtual void	Execute (TMethod method, TObjArray params, Int_t *error=0)
	Execute method on this object with parameters stored in the TObjArray. More...

virtual void	ExecuteEvent (Int_t event, Int_t px, Int_t py)
	Execute action corresponding to an event at (px,py). More...

virtual void	Fatal (const char method, const char msgfmt,...) const
	Issue fatal error message. More...

virtual TObject *	FindObject (const char *name) const
	Must be redefined in derived classes. More...

virtual TObject *	FindObject (const TObject *obj) const
	Must be redefined in derived classes. More...

virtual Option_t *	GetDrawOption () const
	Get option used by the graphics system to draw this object. More...

virtual const char *	GetIconName () const
	Returns mime type name of object. More...

virtual const char *	GetName () const
	Returns name of object. More...

virtual char *	GetObjectInfo (Int_t px, Int_t py) const
	Returns string containing info about the object at position (px,py). More...

virtual Option_t *	GetOption () const

virtual const char *	GetTitle () const
	Returns title of object. More...

virtual UInt_t	GetUniqueID () const
	Return the unique object id. More...

virtual Bool_t	HandleTimer (TTimer *timer)
	Execute action in response of a timer timing out. More...

virtual ULong_t	Hash () const
	Return hash value for this object. More...

virtual void	Info (const char method, const char msgfmt,...) const
	Issue info message. More...

virtual Bool_t	InheritsFrom (const char *classname) const
	Returns kTRUE if object inherits from class "classname". More...

virtual Bool_t	InheritsFrom (const TClass *cl) const
	Returns kTRUE if object inherits from TClass cl. More...

virtual void	Inspect () const
	Dump contents of this object in a graphics canvas. More...

void	InvertBit (UInt_t f)

virtual Bool_t	IsEqual (const TObject *obj) const
	Default equal comparison (objects are equal if they have the same address in memory). More...

virtual Bool_t	IsFolder () const
	Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...

Bool_t	IsOnHeap () const

virtual Bool_t	IsSortable () const

Bool_t	IsZombie () const

virtual void	ls (Option_t *option="") const
	The ls function lists the contents of a class on stdout. More...

void	MayNotUse (const char *method) const
	Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...

virtual Bool_t	Notify ()
	This method must be overridden to handle object notification. More...

void	Obsolete (const char method, const char asOfVers, const char *removedFromVers) const
	Use this method to declare a method obsolete. More...

void	operator delete (void *ptr)
	Operator delete. More...

void	operator delete[] (void *ptr)
	Operator delete []. More...

void *	operator new (size_t sz)

void *	operator new (size_t sz, void *vp)

void *	operator new[] (size_t sz)

void *	operator new[] (size_t sz, void *vp)

TObject &	operator= (const TObject &rhs)
	TObject assignment operator. More...

virtual void	Pop ()
	Pop on object drawn in a pad to the top of the display list. More...

virtual Int_t	Read (const char *name)
	Read contents of object with specified name from the current directory. More...

virtual void	RecursiveRemove (TObject *obj)
	Recursively remove this object from a list. More...

void	ResetBit (UInt_t f)

virtual void	SaveAs (const char filename="", Option_t option="") const
	Save this object in the file specified by filename. More...

virtual void	SavePrimitive (std::ostream &out, Option_t *option="")
	Save a primitive as a C++ statement(s) on output stream "out". More...

void	SetBit (UInt_t f, Bool_t set)
	Set or unset the user status bits as specified in f. More...

void	SetBit (UInt_t f)

virtual void	SetDrawOption (Option_t *option="")
	Set drawing option for object. More...

virtual void	SetUniqueID (UInt_t uid)
	Set the unique object id. More...

virtual void	SysError (const char method, const char msgfmt,...) const
	Issue system error message. More...

Bool_t	TestBit (UInt_t f) const

Int_t	TestBits (UInt_t f) const

virtual void	UseCurrentStyle ()
	Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...

virtual void	Warning (const char method, const char msgfmt,...) const
	Issue warning message. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
	Write this object to the current directory. More...

virtual Int_t	Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
	Write this object to the current directory. More...

Protected Member Functions
void	DoAndEqual (const TBits &rhs)
	Execute `(*this) &= rhs;` Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero. More...

void	DoFlip ()
	Execute `~(*this)` More...

void	DoLeftShift (UInt_t shift)
	Execute the left shift operation. More...

void	DoOrEqual (const TBits &rhs)
	Execute `(*this) &= rhs;` Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero. More...

void	DoRightShift (UInt_t shift)
	Execute the left shift operation. More...

void	DoXorEqual (const TBits &rhs)
	Execute `(*this) ^= rhs;` Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero. More...

void	ReserveBytes (UInt_t nbytes)
	Reverse each bytes. More...

Protected Member Functions inherited from TObject
virtual void	DoError (int level, const char location, const char fmt, va_list va) const
	Interface to ErrorHandler (protected). More...

void	MakeZombie ()

Protected Attributes
UChar_t *	fAllBits

UInt_t	fNbits

UInt_t	fNbytes

Additional Inherited Members
Public Types inherited from TObject
enum	{ kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kBitMask = 0x00ffffff }

enum	{ kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }

enum	EStatusBits { kCanDelete = BIT(0), kMustCleanup = BIT(3), kObjInCanvas = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5), kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13) }

Static Public Member Functions inherited from TObject
static Long_t	GetDtorOnly ()
	Return destructor only flag. More...

static Bool_t	GetObjectStat ()
	Get status of object stat flag. More...

static void	SetDtorOnly (void *obj)
	Set destructor only flag. More...

static void	SetObjectStat (Bool_t stat)
	Turn on/off tracking of objects in the TObjectTable. More...

#include <TBits.h>

Inheritance diagram for TBits:

[legend]

Constructor & Destructor Documentation

◆ TBits() [1/2]

TBits::TBits ( UInt_t nbits = 8 )

TBits constructor. All bits set to 0.

Definition at line 33 of file TBits.cxx.

◆ TBits() [2/2]

TBits::TBits ( const TBits & original )

TBits copy constructor.

Definition at line 45 of file TBits.cxx.

◆ ~TBits()

TBits::~TBits ( )

virtual

TBits destructor.

Definition at line 76 of file TBits.cxx.

Member Function Documentation

◆ Clear()

void TBits::Clear ( Option_t * option = "" )

virtual

Clear the value.

Reimplemented from TObject.

Definition at line 84 of file TBits.cxx.

◆ Compact()

void TBits::Compact ( )

Reduce the storage used by the object to a minimun.

Definition at line 95 of file TBits.cxx.

◆ CountBits()

UInt_t TBits::CountBits ( UInt_t startBit = 0 ) const

Return number of bits set to 1 starting at bit startBit.

Definition at line 118 of file TBits.cxx.

◆ DoAndEqual()

void TBits::DoAndEqual ( const TBits & rhs )

protected

Execute (*this) &= rhs; Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero.

Definition at line 165 of file TBits.cxx.

◆ DoFlip()

void TBits::DoFlip ( )

protected

Execute ~(*this)

Definition at line 205 of file TBits.cxx.

◆ DoLeftShift()

void TBits::DoLeftShift ( UInt_t shift )

protected

Execute the left shift operation.

Definition at line 216 of file TBits.cxx.

◆ DoOrEqual()

void TBits::DoOrEqual ( const TBits & rhs )

protected

Execute (*this) &= rhs; Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero.

Definition at line 181 of file TBits.cxx.

◆ DoRightShift()

void TBits::DoRightShift ( UInt_t shift )

protected

Execute the left shift operation.

Definition at line 239 of file TBits.cxx.

◆ DoXorEqual()

void TBits::DoXorEqual ( const TBits & rhs )

protected

Execute (*this) ^= rhs; Extra bits in rhs are ignored Missing bits in rhs are assumed to be zero.

Definition at line 194 of file TBits.cxx.

◆ FirstNullBit()

UInt_t TBits::FirstNullBit ( UInt_t startBit = 0 ) const

Return position of first null bit (starting from position 0 and up)

Definition at line 264 of file TBits.cxx.

◆ FirstSetBit()

UInt_t TBits::FirstSetBit ( UInt_t startBit = 0 ) const

Return position of first non null bit (starting from position 0 and up)

Definition at line 348 of file TBits.cxx.

◆ Get() [1/8]

void TBits::Get ( Char_t * array ) const

Copy all the byes.

Definition at line 505 of file TBits.cxx.

◆ Get() [2/8]

void TBits::Get ( UChar_t * array ) const

inline

Definition at line 121 of file TBits.h.

◆ Get() [3/8]

void TBits::Get ( Short_t * array ) const

Definition at line 622 of file TBits.cxx.

◆ Get() [4/8]

void TBits::Get ( UShort_t * array ) const

inline

Definition at line 123 of file TBits.h.

◆ Get() [5/8]

void TBits::Get ( Int_t * array ) const

Definition at line 640 of file TBits.cxx.

◆ Get() [6/8]

void TBits::Get ( UInt_t * array ) const

inline

Definition at line 125 of file TBits.h.

◆ Get() [7/8]

void TBits::Get ( Long64_t * array ) const

Definition at line 661 of file TBits.cxx.

◆ Get() [8/8]

void TBits::Get ( ULong64_t * array ) const

inline

Definition at line 127 of file TBits.h.

◆ GetNbits()

UInt_t TBits::GetNbits ( ) const

inline

Definition at line 137 of file TBits.h.

◆ GetNbytes()

UInt_t TBits::GetNbytes ( ) const

inline

Definition at line 138 of file TBits.h.

◆ LastNullBit()

UInt_t TBits::LastNullBit ( UInt_t startBit = 999999999 ) const

Return position of first null bit (starting from position 0 and up)

Definition at line 309 of file TBits.cxx.

◆ LastSetBit()

UInt_t TBits::LastSetBit ( UInt_t startBit = 999999999 ) const

Return position of first non null bit (starting from position 0 and up)

Definition at line 393 of file TBits.cxx.

◆ operator &=()

TBits& TBits::operator&= ( const TBits & rhs )

inline

Definition at line 89 of file TBits.h.

◆ operator!=()

Bool_t TBits::operator!= ( const TBits & other ) const

inline

Definition at line 141 of file TBits.h.

◆ operator<<()

TBits TBits::operator<< ( UInt_t rhs )

inline

Definition at line 94 of file TBits.h.

◆ operator<<=()

TBits& TBits::operator<<= ( UInt_t rhs )

inline

Definition at line 92 of file TBits.h.

◆ operator=()

TBits & TBits::operator= ( const TBits & rhs )

TBits assignment operator.

Definition at line 56 of file TBits.cxx.

◆ operator==()

Bool_t TBits::operator== ( const TBits & other ) const

Definition at line 688 of file TBits.cxx.

◆ operator>>()

TBits TBits::operator>> ( UInt_t rhs )

inline

Definition at line 95 of file TBits.h.

◆ operator>>=()

TBits& TBits::operator>>= ( UInt_t rhs )

inline

Definition at line 93 of file TBits.h.

◆ operator[]() [1/2]

TBits::TReference TBits::operator[] ( UInt_t bitnumber )

inline

Definition at line 86 of file TBits.h.

◆ operator[]() [2/2]

Bool_t TBits::operator[] ( UInt_t bitnumber ) const

inline

Definition at line 237 of file TBits.h.

◆ operator^=()

TBits& TBits::operator^= ( const TBits & rhs )

inline

Definition at line 91 of file TBits.h.

◆ operator|=()

TBits& TBits::operator|= ( const TBits & rhs )

inline

Definition at line 90 of file TBits.h.

◆ operator~()

TBits TBits::operator~ ( )

inline

Definition at line 96 of file TBits.h.

◆ Output()

void TBits::Output ( std::ostream & os ) const

Print the value to the std::ostream.

Definition at line 432 of file TBits.cxx.

◆ Paint()

void TBits::Paint ( Option_t * option = "" )

virtual

Once implemented, it will draw the bit field as an histogram.

use the TVirtualPainter as the usual trick

Reimplemented from TObject.

Definition at line 447 of file TBits.cxx.

◆ Print()

void TBits::Print ( Option_t * option = "" ) const

virtual

Print the list of active bits.

Reimplemented from TObject.

Definition at line 454 of file TBits.cxx.

◆ ReserveBytes()

void TBits::ReserveBytes ( UInt_t nbytes )

protected

Reverse each bytes.

Definition at line 478 of file TBits.cxx.

◆ ResetAllBits()

void TBits::ResetAllBits ( Bool_t value = kFALSE )

Reset all bits to 0 (false).

Definition at line 470 of file TBits.cxx.

◆ ResetBitNumber()

void TBits::ResetBitNumber ( UInt_t bitnumber )

inline

Definition at line 232 of file TBits.h.

◆ Set() [1/8]

void TBits::Set	(	UInt_t	nbits,
		const Char_t *	array
	)

Set all the bytes.

Definition at line 492 of file TBits.cxx.

◆ Set() [2/8]

void TBits::Set	(	UInt_t	nbits,
		const UChar_t *	array
	)

inline

Definition at line 103 of file TBits.h.

◆ Set() [3/8]

void TBits::Set	(	UInt_t	nbits,
		const Short_t *	array
	)

Definition at line 566 of file TBits.cxx.

◆ Set() [4/8]

void TBits::Set	(	UInt_t	nbits,
		const UShort_t *	array
	)

inline

Definition at line 105 of file TBits.h.

◆ Set() [5/8]

void TBits::Set	(	UInt_t	nbits,
		const Int_t *	array
	)

Definition at line 582 of file TBits.cxx.

◆ Set() [6/8]

void TBits::Set	(	UInt_t	nbits,
		const UInt_t *	array
	)

inline

Definition at line 107 of file TBits.h.

◆ Set() [7/8]

void TBits::Set	(	UInt_t	nbits,
		const Long64_t *	array
	)

Definition at line 600 of file TBits.cxx.

◆ Set() [8/8]

void TBits::Set	(	UInt_t	nbits,
		const ULong64_t *	array
	)

inline

Definition at line 109 of file TBits.h.

◆ SetBitNumber()

void TBits::SetBitNumber	(	UInt_t	bitnumber,
		Bool_t	value = `kTRUE`
	)

inline

Definition at line 194 of file TBits.h.

◆ TestBitNumber()

Bool_t TBits::TestBitNumber ( UInt_t bitnumber ) const

inline

Definition at line 219 of file TBits.h.

Member Data Documentation

◆ fAllBits

UChar_t* TBits::fAllBits

protected

Definition at line 35 of file TBits.h.

◆ fNbits

UInt_t TBits::fNbits

protected

Definition at line 33 of file TBits.h.

◆ fNbytes

UInt_t TBits::fNbytes

protected

Definition at line 34 of file TBits.h.

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

core/cont/inc/TBits.h
core/cont/src/TBits.cxx

Classes

Public Member Functions

Protected Member Functions

Protected Attributes

Additional Inherited Members

Constructor & Destructor Documentation

◆ TBits() [1/2]

◆ TBits() [2/2]

◆ ~TBits()

Member Function Documentation

◆ Clear()

◆ Compact()

◆ CountBits()

◆ DoAndEqual()

◆ DoFlip()

◆ DoLeftShift()

◆ DoOrEqual()

◆ DoRightShift()

◆ DoXorEqual()

◆ FirstNullBit()

◆ FirstSetBit()

◆ Get() [1/8]

◆ Get() [2/8]

◆ Get() [3/8]

◆ Get() [4/8]

◆ Get() [5/8]

◆ Get() [6/8]

◆ Get() [7/8]

◆ Get() [8/8]

◆ GetNbits()

◆ GetNbytes()

◆ LastNullBit()

◆ LastSetBit()

◆ operator &=()

◆ operator!=()

◆ operator<<()

◆ operator<<=()

◆ operator=()

◆ operator==()

◆ operator>>()

◆ operator>>=()

◆ operator[]() [1/2]

◆ operator[]() [2/2]

◆ operator^=()

◆ operator|=()

◆ operator~()

◆ Output()

◆ Paint()

◆ Print()

◆ ReserveBytes()

◆ ResetAllBits()

◆ ResetBitNumber()

◆ Set() [1/8]

◆ Set() [2/8]

◆ Set() [3/8]

◆ Set() [4/8]

◆ Set() [5/8]

◆ Set() [6/8]

◆ Set() [7/8]

◆ Set() [8/8]

◆ SetBitNumber()

◆ TestBitNumber()

Member Data Documentation

◆ fAllBits

◆ fNbits

◆ fNbytes