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 }