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/**
* Basic matrix interface.
*/
public interface MatrixInterface {
/**
* @param i ith row of the matrix
* @param j jth column of the matrix
* @return A(i, j)
*/
public double get(int i, int j);
/**
* Get a number of row of the matrix
*
* @return a number of rows of the matrix
*/
public int getRows();
/**
* Get a number of column of the matrix
*
* @return a number of columns of the matrix
*/
public int getColumns();
/**
* A(i, j) = value
*
* @param i ith row of the matrix
* @param j jth column of the matrix
* @param value the value of entry
*/
public void set(int i, int j, double value);
/**
* A=alpha*B
*
* @param alpha
* @param B
* @return A
*/
public Matrix set(double alpha, Matrix B);
/**
* A=B
*
* @param B
* @return A
*/
public Matrix set(Matrix B);
/**
* A(row,column) += value
*
* @param row
* @param column
* @param value
*/
public void add(int row, int column, double value);
/**
* A = B + A
*
* @param B
* @return
*/
public Matrix add(Matrix B);
/**
* A = alpha*B + A
*
* @param alpha
* @param B
* @return A
*/
public Matrix add(double alpha, Matrix B);
/**
* C = A*B
*
* @param B
* @return C
*/
public Matrix mult(Matrix B);
/**
* C = alpha*A*B + C
*
* @param alpha
* @param B
* @param C
* @return C
*/
public Matrix multAdd(double alpha, Matrix B, Matrix C)
/**
* Computes the given norm of the matrix
*
* @param type
* @return norm of the matrix
*/
public double norm(Matrix.Norm type);
}
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