Jcg.util

Class BitSet64

java.lang.Object

Jcg.util.BitSet64

All Implemented Interfaces:

BitSetInterface

public class BitSet64
extends java.lang.Object
implements BitSetInterface

An implementation of a bit-vector (using memory words on 64 bits)

Author:

Luca Castelli Aleardi (older version by Yonik)

Constructor Summary

Constructors

Constructor and Description
BitSet64(int numBits) Constructs an OpenBitSet large enough to hold numBits.

Method Summary

Modifier and Type	Method and Description
static int	bits2words(int numBits) returns the number of 64 bit words it would take to hold numBits
int	bitSize() Returns the size of the bitset (number of words)
void	clear(int index) Clears a bit.
boolean	get(int index) Returns true or false for the specified bit index.
int	getBit(int index) Returns 1 if the bit is set, 0 if not.
long[]	getBits() Expert: returns the long[] storing the bits
void	set(int index) Sets the bit at the specified index.
int	size() Returns the size of the bitset (number of words)
java.lang.String	toString()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

BitSet64

public BitSet64(int numBits)

Constructs an OpenBitSet large enough to hold numBits.

Parameters:

numBits -

Method Detail

size

public int size()

Returns the size of the bitset (number of words)

Specified by:

size in interface BitSetInterface

bitSize

public int bitSize()

Returns the size of the bitset (number of words)

Specified by:

bitSize in interface BitSetInterface

getBits

public long[] getBits()

Expert: returns the long[] storing the bits

get

public boolean get(int index)

Returns true or false for the specified bit index. The index should be less than the OpenBitSet size

Specified by:

get in interface BitSetInterface

getBit

public int getBit(int index)

Returns 1 if the bit is set, 0 if not. The index should be less than the OpenBitSet size

Specified by:

getBit in interface BitSetInterface

set

public void set(int index)

Sets the bit at the specified index. The index should be less than the OpenBitSet size.

Specified by:

set in interface BitSetInterface

clear

public void clear(int index)

Clears a bit. The index should be less than the OpenBitSet size.

Specified by:

clear in interface BitSetInterface

bits2words

public static int bits2words(int numBits)

returns the number of 64 bit words it would take to hold numBits

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object