001 /* 002 * Copyright (C) 2008-2010 by Holger Arndt 003 * 004 * This file is part of the Universal Java Matrix Package (UJMP). 005 * See the NOTICE file distributed with this work for additional 006 * information regarding copyright ownership and licensing. 007 * 008 * UJMP is free software; you can redistribute it and/or modify 009 * it under the terms of the GNU Lesser General Public License as 010 * published by the Free Software Foundation; either version 2 011 * of the License, or (at your option) any later version. 012 * 013 * UJMP is distributed in the hope that it will be useful, 014 * but WITHOUT ANY WARRANTY; without even the implied warranty of 015 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 016 * GNU Lesser General Public License for more details. 017 * 018 * You should have received a copy of the GNU Lesser General Public 019 * License along with UJMP; if not, write to the 020 * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, 021 * Boston, MA 02110-1301 USA 022 */ 023 024 package org.ujmp.core.bigintegermatrix.impl; 025 026 import java.math.BigInteger; 027 import java.util.Arrays; 028 029 import org.ujmp.core.Matrix; 030 import org.ujmp.core.bigintegermatrix.stub.AbstractDenseBigIntegerMatrix2D; 031 import org.ujmp.core.exceptions.MatrixException; 032 033 public class DefaultDenseBigIntegerMatrix2D extends AbstractDenseBigIntegerMatrix2D { 034 private static final long serialVersionUID = 443424906231157395L; 035 036 private BigInteger[] values = null; 037 038 private long[] size = null; 039 040 private int rows = 0; 041 042 private int cols = 0; 043 044 public DefaultDenseBigIntegerMatrix2D(Matrix m) throws MatrixException { 045 this.rows = (int) m.getRowCount(); 046 this.cols = (int) m.getColumnCount(); 047 this.size = new long[] { rows, cols }; 048 if (m instanceof DefaultDenseBigIntegerMatrix2D) { 049 BigInteger[] v = ((DefaultDenseBigIntegerMatrix2D) m).values; 050 this.values = new BigInteger[v.length]; 051 System.arraycopy(v, 0, this.values, 0, v.length); 052 } else { 053 this.values = new BigInteger[rows * cols]; 054 for (long[] c : m.allCoordinates()) { 055 setBigInteger(m.getAsBigInteger(c), c); 056 } 057 } 058 } 059 060 public DefaultDenseBigIntegerMatrix2D(long... size) { 061 this.rows = (int) size[ROW]; 062 this.cols = (int) size[COLUMN]; 063 this.size = new long[] { rows, cols }; 064 this.values = new BigInteger[rows * cols]; 065 Arrays.fill(values, BigInteger.ZERO); 066 } 067 068 public DefaultDenseBigIntegerMatrix2D(BigInteger[] v, int rows, int cols) { 069 this.rows = rows; 070 this.cols = cols; 071 this.size = new long[] { rows, cols }; 072 this.values = v; 073 } 074 075 public long[] getSize() { 076 return size; 077 } 078 079 public long getRowCount() { 080 return rows; 081 } 082 083 public long getColumnCount() { 084 return cols; 085 } 086 087 public BigInteger getBigInteger(long row, long column) { 088 return values[(int) (column * rows + row)]; 089 } 090 091 public void setBigInteger(BigInteger value, long row, long column) { 092 values[(int) (column * rows + row)] = value; 093 } 094 095 public BigInteger getBigInteger(int row, int column) { 096 return values[column * rows + row]; 097 } 098 099 public void setBigInteger(BigInteger value, int row, int column) { 100 values[column * rows + row] = value; 101 } 102 103 }