commons-rng-core/src/main/java/org/apache/commons/rng/core/source64/L128X1024Mix.java [104:141]:
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        super(source);
        System.arraycopy(source.x, 0, x, 0, XBG_STATE_SIZE);
        index = source.index;
    }

    /** {@inheritDoc} */
    @Override
    protected byte[] getStateInternal() {
        final long[] s = new long[XBG_STATE_SIZE + 1];
        System.arraycopy(x, 0, s, 0, XBG_STATE_SIZE);
        s[XBG_STATE_SIZE] = index;
        return composeStateInternal(NumberFactory.makeByteArray(s),
                                    super.getStateInternal());
    }

    /** {@inheritDoc} */
    @Override
    protected void setStateInternal(byte[] s) {
        final byte[][] c = splitStateInternal(s, (XBG_STATE_SIZE + 1) * Long.BYTES);

        final long[] tmp = NumberFactory.makeLongArray(c[0]);
        System.arraycopy(tmp, 0, x, 0, XBG_STATE_SIZE);
        index = (int) tmp[XBG_STATE_SIZE];

        super.setStateInternal(c[1]);
    }

    /** {@inheritDoc} */
    @Override
    public long next() {
        // LXM generate.
        // Old state is used for the output allowing parallel pipelining
        // on processors that support multiple concurrent instructions.

        final int q = index;
        index = (q + 1) & 15;
        final long s0 = x[index];
        long s15 = x[q];
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commons-rng-core/src/main/java/org/apache/commons/rng/core/source64/L64X1024Mix.java [104:141]:
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        super(source);
        System.arraycopy(source.x, 0, x, 0, XBG_STATE_SIZE);
        index = source.index;
    }

    /** {@inheritDoc} */
    @Override
    protected byte[] getStateInternal() {
        final long[] s = new long[XBG_STATE_SIZE + 1];
        System.arraycopy(x, 0, s, 0, XBG_STATE_SIZE);
        s[XBG_STATE_SIZE] = index;
        return composeStateInternal(NumberFactory.makeByteArray(s),
                                    super.getStateInternal());
    }

    /** {@inheritDoc} */
    @Override
    protected void setStateInternal(byte[] s) {
        final byte[][] c = splitStateInternal(s, (XBG_STATE_SIZE + 1) * Long.BYTES);

        final long[] tmp = NumberFactory.makeLongArray(c[0]);
        System.arraycopy(tmp, 0, x, 0, XBG_STATE_SIZE);
        index = (int) tmp[XBG_STATE_SIZE];

        super.setStateInternal(c[1]);
    }

    /** {@inheritDoc} */
    @Override
    public long next() {
        // LXM generate.
        // Old state is used for the output allowing parallel pipelining
        // on processors that support multiple concurrent instructions.

        final int q = index;
        index = (q + 1) & 15;
        final long s0 = x[index];
        long s15 = x[q];
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