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annotate scripts/java/org/octave/Matrix.java @ 20830:b65888ec820e draft default tip gccjit

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dmalcom gcc jit import
author Stefan Mahr <dac922@gmx.de>
date Fri, 27 Feb 2015 16:59:36 +0100
parents 501cb6a90f0f
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 /*
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2
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3 Copyright (C) 2007, 2013 Michael Goffioul
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4
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5 This file is part of Octave.
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6
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7 Octave is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3 of the License, or (at
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10 your option) any later version.
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11
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12 Octave is distributed in the hope that it will be useful, but
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13 WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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15 General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with Octave; see the file COPYING. If not, see
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19 <http://www.gnu.org/licenses/>.
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20
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21 */
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22
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23 package org.octave;
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24
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25 import java.nio.*;
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26 import java.text.DecimalFormat;
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27
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28 public class Matrix
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29 {
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30 private int[] dims;
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31 private Buffer data;
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32 private Object cache = null;
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33
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34 public Matrix ()
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35 {
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36 this (new double[0], new int[] {0, 0});
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37 }
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38
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39 public Matrix (double[] data)
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40 {
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41 this (data, new int[] {1, data.length});
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42 }
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43
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44 public Matrix (double[][] data)
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45 {
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46 int m = data.length;
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47 int n = (m > 0 ? data[0].length : 0);
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48 int idx = 0;
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49 double[] buf = new double[m*n];
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50
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51 for (int j = 0; j < n; j++)
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52 for (int i = 0; i < m; i++)
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53 buf[idx++] = data[i][j];
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54 this.data = DoubleBuffer.wrap(buf);
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55 this.dims = new int[] {m, n};
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56 this.cache = data;
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57 }
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58
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59 public Matrix (double[][][] data)
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60 {
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61 int m = data.length;
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62 int n = (m > 0 ? data[0].length : 0);
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63 int p = (n > 0 ? data[0][0].length : 0);
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64 int idx = 0;
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65 double[] buf = new double[m*n*p];
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66
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67 for (int k = 0; k < p; k++)
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68 for (int j = 0; j < n; j++)
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69 for (int i = 0; i < m; i++)
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70 buf[idx++] = data[i][j][k];
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71 this.data = DoubleBuffer.wrap(buf);
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72 this.dims = new int[] {m, n, p};
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73 this.cache = data;
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74 }
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75
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76 public Matrix (double[] data, int[] dims)
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77 {
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78 this.dims = dims;
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79 this.data = DoubleBuffer.wrap(data);
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80 }
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81
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82 public Matrix (byte[] data, int[] dims)
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83 {
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84 this.dims = dims;
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85 this.data = ByteBuffer.wrap(data);
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86 }
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87
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88 public Matrix (int[] data, int[] dims)
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89 {
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90 this.dims = dims;
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91 this.data = IntBuffer.wrap(data);
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92 }
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93
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94 public double[] toDouble ()
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95 {
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96 if (data instanceof DoubleBuffer)
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97 return ((DoubleBuffer)data).array ();
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98 else
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99 throw new ClassCastException ("matrix is not of type `double'");
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100 }
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101
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102 public byte[] toByte ()
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103 {
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104 if (data instanceof ByteBuffer)
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105 return ((ByteBuffer)data).array ();
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106 else
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107 throw new ClassCastException ("matrix is not of type `byte'");
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108 }
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109
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110 public int[] toInt ()
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111 {
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112 if (data instanceof IntBuffer)
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113 return ((IntBuffer)data).array ();
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114 else
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115 throw new ClassCastException ("matrix is not of type `integer'");
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116 }
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117
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118 public int getNDims ()
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119 {
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120 return (dims == null ? 0 : dims.length);
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121 }
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122
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123 public int getDim (int index)
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124 {
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125 return (dims == null || index < 0 || index >= dims.length ? -1 : dims[index]);
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126 }
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127
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128 public int[] getDims ()
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129 {
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130 return dims;
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131 }
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132
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133 public String getClassName ()
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134 {
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135 if (data instanceof DoubleBuffer)
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136 return "double";
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137 else if (data instanceof IntBuffer)
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138 return "integer";
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139 else if (data instanceof ByteBuffer)
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140 return "byte";
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141 else
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142 return "unknown";
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143 }
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144
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145 public String toString ()
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146 {
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147 if (dims == null || data == null)
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148 return "null";
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149
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150 String s = "";
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151
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152 if (dims.length == 2 && dims[0] == 1 && dims[1] <= 5)
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153 {
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154 if (data instanceof DoubleBuffer)
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John W. Eaton <jwe@octave.org>
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155 {
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156 DoubleBuffer b = (DoubleBuffer)data;
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157 DecimalFormat fmt = new DecimalFormat ("0.0000 ");
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158 for (int i = 0; i < b.capacity (); i++)
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159 s += fmt.format (b.get (i));
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160 }
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161 else if (data instanceof IntBuffer)
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162 {
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163 IntBuffer b = (IntBuffer)data;
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164 for (int i = 0; i < b.capacity (); i++)
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165 s += (Integer.toString (b.get (i)) + " ");
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166 }
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167 else if (data instanceof ByteBuffer)
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168 {
6e39fe7992d9 style fixes and copyright update for java files
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169 ByteBuffer b = (ByteBuffer)data;
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170 for (int i = 0; i < b.capacity (); i++)
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171 s += (Byte.toString (b.get (i)) + " ");
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172 }
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173 s = ("[ " + s + "]");
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John W. Eaton <jwe@octave.org>
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174 }
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175 else if (dims.length == 2 && dims[0] == 0 && dims[1] == 0)
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176 s = "[ ]";
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177 else
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178 {
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John W. Eaton <jwe@octave.org>
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179 for (int i = 0; i < dims.length; i++)
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180 if (i == 0)
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181 s = Integer.toString (dims[i]);
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182 else
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183 s += (" by " + Integer.toString (dims[i]));
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184 s = ("[ (" + s + ") array of " + getClassName () + " ]");
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185 }
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186
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187 return s;
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188 }
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189
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190 public static Object ident (Object o)
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191 {
6e39fe7992d9 style fixes and copyright update for java files
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192 System.out.println (o);
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193 return o;
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194 }
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195
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196 public boolean equals (Object value)
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197 {
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198 if (value instanceof Matrix)
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199 {
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200 Matrix m = (Matrix)value;
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201 if (!java.util.Arrays.equals (dims, m.dims))
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John W. Eaton <jwe@octave.org>
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202 return false;
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John W. Eaton <jwe@octave.org>
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203 return data.equals (m.data);
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204 }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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205 else
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John W. Eaton <jwe@octave.org>
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206 return false;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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207 }
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parents:
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208
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209 public boolean isEmpty ()
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John W. Eaton <jwe@octave.org>
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diff changeset
210 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
211 return (data == null || dims == null || data.capacity () == 0);
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John W. Eaton <jwe@octave.org>
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212 }
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parents:
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213
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214 public boolean isVector ()
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John W. Eaton <jwe@octave.org>
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diff changeset
215 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
216 return (dims.length == 1 ||
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
217 (dims.length == 2 && (dims[0] == 1 || dims[1] == 1 ||
6e39fe7992d9 style fixes and copyright update for java files
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diff changeset
218 (dims[0] == 0 && dims[1] == 0))));
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
219 }
15625
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John W. Eaton <jwe@octave.org>
parents:
diff changeset
220
15753
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John W. Eaton <jwe@octave.org>
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diff changeset
221 public int getLength ()
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John W. Eaton <jwe@octave.org>
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diff changeset
222 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
223 return data.capacity ();
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John W. Eaton <jwe@octave.org>
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diff changeset
224 }
15625
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parents:
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225
15753
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226 public double[] asDoubleVector ()
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John W. Eaton <jwe@octave.org>
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diff changeset
227 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
228 if (data instanceof DoubleBuffer)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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229 return toDouble ();
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
230 else
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
231 System.out.println ("Warning: invalid conversion to double vector");
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
232 return null;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
233 }
15625
acf0addfc610 include Octave Forge java package in core Octave
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parents:
diff changeset
234
15753
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diff changeset
235 public double[][] asDoubleMatrix ()
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
236 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
237 if (cache != null)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
238 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
239 try { return (double[][])cache; }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
240 catch (ClassCastException e) { }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
241 }
15625
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parents:
diff changeset
242
15753
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parents: 15625
diff changeset
243 if (data instanceof DoubleBuffer && dims.length == 2)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
244 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
245 double[][] m = new double[dims[0]][dims[1]];
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
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diff changeset
246 double[] data = ((DoubleBuffer)this.data).array ();
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
247 int idx = 0;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
248 if (data.length > 0)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
249 for (int j = 0; j < m[0].length; j++)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
250 for (int i = 0; i < m.length; i++)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
251 m[i][j] = data[idx++];
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
252 cache = m;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
253 return m;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
254 }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
255 else
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
256 System.out.println ("Warning: invalid conversion to double matrix");
15625
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parents:
diff changeset
257
15753
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diff changeset
258 return null;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
259 }
18013
501cb6a90f0f maint: Replace unnecessary tabs with spaces.
Rik <rik@octave.org>
parents: 17744
diff changeset
260
15753
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John W. Eaton <jwe@octave.org>
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diff changeset
261 public double[][][] asDoubleMatrix3 ()
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
262 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
263 if (cache != null)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
264 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
265 try { return (double[][][])cache; }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
266 catch (ClassCastException e) { }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
267 }
15625
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parents:
diff changeset
268
15753
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diff changeset
269 if (data instanceof DoubleBuffer && dims.length == 3)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
270 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
271 double[][][] m = new double[dims[0]][dims[1]][dims[2]];
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
272 double[] data = ((DoubleBuffer)this.data).array ();
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
273 int idx = 0;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
274 if (data.length > 0)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
275 for (int k = 0; k < dims[2]; k++)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
276 for (int j = 0; j < dims[1]; j++)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
277 for (int i = 0; i < dims[0]; i++)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
278 m[i][j][k] = data[idx++];
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
279 cache = m;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
280 return m;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
281 }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
282 else
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
283 System.out.println ("Warning: invalid conversion to double array");
15625
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parents:
diff changeset
284
15753
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diff changeset
285 return null;
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
286 }
15625
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parents:
diff changeset
287
15753
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diff changeset
288 public int[][] asIntMatrix ()
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
289 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
290 if (cache != null)
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
291 {
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
292 try { return (int[][])cache; }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
293 catch (ClassCastException e) { }
6e39fe7992d9 style fixes and copyright update for java files
John W. Eaton <jwe@octave.org>
parents: 15625
diff changeset
294 }
15625
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parents:
diff changeset
295
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296 if (data instanceof IntBuffer && dims.length == 2)
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297 {
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298 int[][] m = new int[dims[0]][dims[1]];
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299 int[] data = ((IntBuffer)this.data).array ();
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300 int idx = 0;
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301 if (data.length > 0)
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302 for (int j = 0; j < m[0].length; j++)
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303 for (int i = 0; i < m.length; i++)
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304 m[i][j] = data[idx++];
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305 cache = m;
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306 return m;
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307 }
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308 else
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309 System.out.println ("Warning: invalid conversion to integer matrix");
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310
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311 return null;
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312 }
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313
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314 public double minValue ()
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315 {
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316 double val = Double.POSITIVE_INFINITY;
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317
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318 if (data instanceof DoubleBuffer)
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319 {
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320 double[] buf = ((DoubleBuffer)data).array ();
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321 for (int i = 0; i < buf.length; i++)
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322 if (buf[i] < val)
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323 val = buf[i];
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324 }
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325 else if (data instanceof ByteBuffer)
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326 {
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327 byte[] buf = ((ByteBuffer)data).array ();
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328 for (int i = 0; i < buf.length; i++)
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329 if (buf[i] < val)
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330 val = buf[i];
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331 }
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332 else
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333 System.out.println ("Warning: cannot compute min value for array of type `" + getClassName () + "'");
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334
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335 return val;
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336 }
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337
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338 public double maxValue ()
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339 {
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340 double val = Double.NEGATIVE_INFINITY;
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341
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342 if (data instanceof DoubleBuffer)
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343 {
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344 double[] buf = ((DoubleBuffer)data).array ();
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345 for (int i = 0; i < buf.length; i++)
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346 if (buf[i] > val)
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347 val = buf[i];
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348 }
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349 else if (data instanceof ByteBuffer)
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350 {
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351 byte[] buf = ((ByteBuffer)data).array ();
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352 for (int i = 0; i <buf.length; i++)
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353 if (buf[i] > val)
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354 val = buf[i];
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355 }
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356 else
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357 System.out.println ("Warning: cannot compute max value for array of type `" + getClassName () + "'");
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358
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359 return val;
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360 }
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361 }