TBits

class description - source file - inheritance tree

class TBits : public TObject


    public:

                TBits TBits(UInt_t nbits = 8)
                TBits TBits(const TBits&)
         virtual void ~TBits()
       static TClass* Class()
                 void Compact()
               UInt_t CountBits(UInt_t startBit = 0) const
               UInt_t FirstNullBit(UInt_t startBit = 0) const
               UInt_t FirstSetBit(UInt_t startBit = 0) const
               UInt_t GetNbits() const
               UInt_t GetNbytes() const
      virtual TClass* IsA() const
               TBits& operator=(const TBits&)
         virtual void Paint(Option_t* option)
         virtual void Print(Option_t* option) const
                 void ResetAllBits(Bool_t value = kFALSE)
                 void ResetBitNumber(UInt_t bitnumber)
                 void SetBitNumber(UInt_t bitnumber, Bool_t value = kTRUE)
         virtual void ShowMembers(TMemberInspector& insp, char* parent)
         virtual void Streamer(TBuffer& b)
                 void StreamerNVirtual(TBuffer& b)
               Bool_t TestBitNumber(UInt_t bitnumber) const

Data Members


    protected:

        UInt_t fNbits    Number of bits (around fNbytes*8)
        UInt_t fNbytes   Number of UChars in fAllBits
      UChar_t* fAllBits  [fNbytes] array of UChars

Class Description

TBits(UInt_t nbits) : fNbits(nbits)

 TBits constructor.  All bits set to 0

TBits(const TBits &original) : TObject(original), fNbits(original.fNbits), fNbytes(original.fNbytes)

 TBits copy constructor

~TBits()

 TBits destructor

void Compact()

 Reduce the storage used by the object to a minimun

UInt_t CountBits(UInt_t startBit) const

 Return number of bits set to 1 starting at bit startBit

UInt_t FirstNullBit(UInt_t startBit) const

 Return position of first null bit

UInt_t FirstSetBit(UInt_t startBit) const

 Return position of first non null bit

void Paint(Option_t *)

 Once implemented, it will draw the bit field as an histogram.
 use the TVirtualPainter as the usual trick

void Print(Option_t *) const

 Print the list of active bits

void ResetAllBits(Bool_t)

 Reset all bits to 0 (false).

void SetBitNumber(UInt_t bitnumber, Bool_t value)

 Set bit number 'bitnumber' to be value

Bool_t TestBitNumber(UInt_t bitnumber) const

 Return the current value of the bit

Inline Functions

             TBits& operator=(const TBits&)
               void ResetBitNumber(UInt_t bitnumber)
             UInt_t GetNbits() const
             UInt_t GetNbytes() const
            TClass* Class()
            TClass* IsA() const
               void ShowMembers(TMemberInspector& insp, char* parent)
               void Streamer(TBuffer& b)
               void StreamerNVirtual(TBuffer& b)

Author: Philippe Canal 05/02/2001
Last update: root/base:$Name: $:$Id: TBits.cxx,v 1.11 2003/02/11 20:25:08 brun Exp $

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