    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.math.linear;
    019
    020
    021    /**
    022     * Interface defining very basic matrix operations.
    023     * @version $Revision: 772119 $ $Date: 2009-05-06 11:43:28 +0200 (mer. 06 mai 2009) $
    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    }