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 018package org.apache.commons.math3.linear; 019 020 021/** 022 * Interface defining very basic matrix operations. 023 * @since 2.0 024 */ 025public interface AnyMatrix { 026 027 /** 028 * Is this a square matrix? 029 * @return true if the matrix is square (rowDimension = columnDimension) 030 */ 031 boolean isSquare(); 032 033 /** 034 * Returns the number of rows in the matrix. 035 * 036 * @return rowDimension 037 */ 038 int getRowDimension(); 039 040 /** 041 * Returns the number of columns in the matrix. 042 * 043 * @return columnDimension 044 */ 045 int getColumnDimension(); 046 047}