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Only the Java Core part of Javolution library, with slight modifications for use in MSFTBX.

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/*
 * Javolution - Java(TM) Solution for Real-Time and Embedded Systems
 * Copyright (C) 2012 - Javolution (http://javolution.org/)
 * All rights reserved.
 * 
 * Permission to use, copy, modify, and distribute this software is
 * freely granted, provided that this notice is preserved.
 */
package javolution.util.service;

import javolution.util.FastBitSet;
import javolution.util.FastTable;
import javolution.util.Index;

/**
 * The set of related functionalities which can be used/reused to 
 * implement bit-sets collections.
 * 
 * @author Jean-Marie Dautelle
 * @version 6.0, July 21, 2013
 * @see FastTable
 */
public interface BitSetService extends SetService {

    //
    // Read Accessors.
    //

    /** See {@link FastBitSet#cardinality() } */
    int cardinality();

    /** See {@link FastBitSet#get(int) } */
    boolean get(int bitIndex);

    /** See {@link FastBitSet#get(int, int) } */
    BitSetService get(int fromIndex, int toIndex);

    /** See {@link FastBitSet#intersects(FastBitSet) } */
    boolean intersects(BitSetService that);

    /** See {@link FastBitSet#length() } */
    int length();

    //
    // Iterations
    //

    /** See {@link FastBitSet#nextClearBit(int) } */
    int nextClearBit(int fromIndex);

    /** See {@link FastBitSet#nextSetBit(int) } */
    int nextSetBit(int fromIndex);

    /** See {@link FastBitSet#previousClearBit(int) } */
    int previousClearBit(int fromIndex);

    /** See {@link FastBitSet#previousSetBit(int) } */
    int previousSetBit(int fromIndex);

    //
    // Clear/Set/Flip Operations
    //

    /** See {@link FastBitSet#clear(int) } */
    void clear(int bitIndex);

    /** See {@link FastBitSet#clear(int, int) } */
    void clear(int fromIndex, int toIndex);

    /** Clear or sets the specified bit, returns true 
     * if previously set; false otherwise. */
    boolean getAndSet(int bitIndex, boolean value);

    /** See {@link FastBitSet#set(int) } */
    void set(int bitIndex);

    /** See {@link FastBitSet#set(int, boolean) } */
    void set(int bitIndex, boolean value);

    /** See {@link FastBitSet#set(int, int) } */
    void set(int fromIndex, int toIndex);

    /** See {@link FastBitSet#set(int, int, boolean) } */
    void set(int fromIndex, int toIndex, boolean value);

    /** See {@link FastBitSet#flip(int) } */
    void flip(int bitIndex);

    /** See {@link FastBitSet#flip(int, int) } */
    void flip(int fromIndex, int toIndex);

    //
    // Operators Operations
    //

    /** See {@link FastBitSet#and(FastBitSet) } */
    void and(BitSetService that);

    /** See {@link FastBitSet#andNot(FastBitSet) } */
    void andNot(BitSetService that);

    /** See {@link FastBitSet#or(FastBitSet) } */
    void or(BitSetService that);

    /** See {@link FastBitSet#xor(FastBitSet) } */
    void xor(BitSetService that);

    //
    // Misc.
    //

    /** Returns the minimal length long[] representation of this 
     * bitset. */
    long[] toLongArray();

}