001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.math3.linear;
019    
020    
021    /**
022     * Interface defining very basic matrix operations.
023     * @version $Id: AnyMatrix.java 1416643 2012-12-03 19:37:14Z tn $
024     * @since 2.0
025     */
026    public interface AnyMatrix {
027    
028        /**
029         * Is this a square matrix?
030         * @return true if the matrix is square (rowDimension = columnDimension)
031         */
032        boolean isSquare();
033    
034        /**
035         * Returns the number of rows in the matrix.
036         *
037         * @return rowDimension
038         */
039        int getRowDimension();
040    
041        /**
042         * Returns the number of columns in the matrix.
043         *
044         * @return columnDimension
045         */
046        int getColumnDimension();
047    
048    }