class SubMatrix implements Cloneable {

    @Deprecated
    public boolean isNull(double zero) {
        return isZero(zero);
    }

    public  SubMatrix(final double[] data, final int nrows, final int ncols);
    public  SubMatrix(final double[] data, final int start, final int nrows,
            final int ncols, final int rowinc, final int colinc);
    public  SubMatrix(final SubMatrix m);

}