public double getDouble(int row, int column) { return matrix.getQuick(row, column); }
public double getDouble(long row, long column) { return matrix.getQuick((int) row, (int) column); }
public double getDouble(int row, int column) { return matrix.getQuick(row, column); }
public double getDouble(long row, long column) { return matrix.getQuick((int) row, (int) column); }