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1 /*
2  * Licensed to the Apache Software Foundation (ASF) under one or more
3  * contributor license agreements.  See the NOTICE file distributed with
4  * this work for additional information regarding copyright ownership.
5  * The ASF licenses this file to You under the Apache License, Version 2.0
6  * (the "License"); you may not use this file except in compliance with
7  * the License.  You may obtain a copy of the License at
8  *
9  *      http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  */
17 
18 package org.apache.commons.math.linear;
19 
20 
21 /**
22  * Interface defining very basic matrix operations.
23  * @version $Revision: 772119 $ $Date: 2009-05-06 11:43:28 +0200 (mer. 06 mai 2009) $
24  * @since 2.0
25  */
26 public interface AnyMatrix {
27 
28     /**
29      * Is this a square matrix?
30      * @return true if the matrix is square (rowDimension = columnDimension)
31      */
isSquare()32     boolean isSquare();
33 
34     /**
35      * Returns the number of rows in the matrix.
36      *
37      * @return rowDimension
38      */
getRowDimension()39     int getRowDimension();
40 
41     /**
42      * Returns the number of columns in the matrix.
43      *
44      * @return columnDimension
45      */
getColumnDimension()46     int getColumnDimension();
47 
48 }
49