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• RangeCoder.java

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src.org.tukaani.xz.rangecoder.RangeCoder Maven / Gradle / Ivy

/*
 * RangeCoder
 *
 * Authors: Lasse Collin 
 *          Igor Pavlov 
 *
 * This file has been put into the public domain.
 * You can do whatever you want with this file.
 */

package org.tukaani.xz.rangecoder;

import java.util.Arrays;

public abstract class RangeCoder {
    static final int SHIFT_BITS = 8;
    static final int TOP_MASK = 0xFF000000;
    static final int BIT_MODEL_TOTAL_BITS = 11;
    static final int BIT_MODEL_TOTAL = 1 << BIT_MODEL_TOTAL_BITS;
    static final short PROB_INIT = (short)(BIT_MODEL_TOTAL / 2);
    static final int MOVE_BITS = 5;

    public static final void initProbs(short[] probs) {
        Arrays.fill(probs, PROB_INIT);
    }
}