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1 /* |
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2 |
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3 Copyright (C) 1996, 1997 John W. Eaton |
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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 the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 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, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #if defined (__GNUG__) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include <iostream.h> |
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32 |
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33 #include "lo-ieee.h" |
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34 #include "lo-utils.h" |
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35 #include "mx-base.h" |
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36 |
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37 #include "gripes.h" |
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38 #include "oct-obj.h" |
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39 #include "oct-var-ref.h" |
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40 #include "ops.h" |
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41 #include "ov-scalar.h" |
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42 #include "ov-re-mat.h" |
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43 #include "pr-output.h" |
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44 #include "variables.h" |
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45 |
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46 octave_allocator |
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47 octave_matrix::allocator (sizeof (octave_matrix)); |
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48 |
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49 int |
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50 octave_matrix::t_id (-1); |
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51 |
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52 const string |
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53 octave_matrix::t_name ("matrix"); |
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54 |
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55 octave_matrix::octave_matrix (const RowVector& v, int pcv) |
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56 : octave_base_value (), |
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57 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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58 ? Matrix (v.transpose ()) : Matrix (v)) { } |
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59 |
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60 octave_matrix::octave_matrix (const ColumnVector& v, int pcv) |
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61 : octave_base_value (), |
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62 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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63 ? Matrix (v) : Matrix (v.transpose ())) { } |
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64 |
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65 octave_value * |
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66 octave_matrix::try_narrowing_conversion (void) |
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67 { |
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68 octave_value *retval = 0; |
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69 |
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70 int nr = matrix.rows (); |
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71 int nc = matrix.cols (); |
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72 |
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73 if (nr == 1 && nc == 1) |
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74 retval = new octave_scalar (matrix (0, 0)); |
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75 |
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76 return retval; |
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77 } |
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78 |
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79 octave_value |
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80 octave_matrix::index (const octave_value_list& idx) const |
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81 { |
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82 octave_value retval; |
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83 |
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84 int len = idx.length (); |
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85 |
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86 switch (len) |
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87 { |
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88 case 2: |
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89 { |
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90 idx_vector i = idx (0).index_vector (); |
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91 idx_vector j = idx (1).index_vector (); |
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92 |
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93 retval = Matrix (matrix.index (i, j)); |
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94 } |
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95 break; |
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96 |
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97 case 1: |
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98 { |
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99 idx_vector i = idx (0).index_vector (); |
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100 |
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101 retval = Matrix (matrix.index (i)); |
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102 } |
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103 break; |
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104 |
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105 default: |
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106 error ("invalid number of indices (%d) for matrix value", len); |
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107 break; |
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108 } |
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109 |
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110 return retval; |
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111 } |
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112 |
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113 extern void assign (Array2<double>&, const Array2<double>&); |
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114 |
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115 void |
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116 octave_matrix::assign (const octave_value_list& idx, const Matrix& rhs) |
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117 { |
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118 int len = idx.length (); |
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119 |
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120 switch (len) |
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121 { |
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122 case 2: |
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123 { |
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124 idx_vector i = idx (0).index_vector (); |
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125 idx_vector j = idx (1).index_vector (); |
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126 |
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127 matrix.set_index (i); |
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128 matrix.set_index (j); |
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129 |
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130 ::assign (matrix, rhs); |
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131 } |
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132 break; |
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133 |
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134 case 1: |
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135 { |
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136 idx_vector i = idx (0).index_vector (); |
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137 |
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138 matrix.set_index (i); |
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139 |
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140 ::assign (matrix, rhs); |
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141 } |
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142 break; |
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143 |
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144 default: |
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145 error ("invalid number of indices (%d) for indexed matrix assignment", |
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146 len); |
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147 break; |
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148 } |
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149 } |
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150 |
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151 void |
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152 octave_matrix::assign_struct_elt (assign_op, const string& nm, |
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153 const octave_value& rhs) |
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154 { |
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155 octave_value retval; |
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156 |
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157 Matrix m = rhs.matrix_value (); |
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158 |
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159 if (! error_state) |
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160 { |
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161 int nr = -1; |
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162 int nc = -1; |
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163 |
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164 int dim = -1; |
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165 |
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166 if (m.rows () == 1 && m.cols () == 2) |
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167 { |
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168 nr = NINT (m (0, 0)); |
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169 nc = NINT (m (0, 1)); |
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170 } |
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171 else if (m.rows () == 2 && m.cols () == 1) |
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172 { |
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173 nr = NINT (m (0, 0)); |
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174 nc = NINT (m (1, 0)); |
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175 } |
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176 else if (m.rows () == 1 && m.cols () == 1) |
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177 { |
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178 dim = NINT (m (0, 0)); |
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179 |
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180 nr = matrix.rows (); |
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181 nc = matrix.cols (); |
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182 } |
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183 |
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184 if (nm == "size") |
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185 { |
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186 if (nr >= 0 && nc >= 0) |
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187 matrix.resize (nr, nc, 0.0); |
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188 else |
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189 error ("invalid size specification = [%d, %d] specified", |
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190 nr, nc); |
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191 } |
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192 else if (nm == "rows") |
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193 { |
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194 if (dim >= 0) |
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195 matrix.resize (dim, nc, 0.0); |
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196 else |
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197 error ("invalid row dimension = %d specified", dim); |
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198 } |
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199 else if (nm == "cols" || nm == "columns") |
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200 { |
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201 if (dim >= 0) |
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202 matrix.resize (nr, dim, 0.0); |
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203 else |
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204 error ("invalid column dimension = %d specified", dim); |
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205 } |
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206 } |
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207 } |
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208 |
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209 void |
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210 octave_matrix::assign_struct_elt (assign_op, const string&, |
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211 const octave_value_list&, |
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212 const octave_value&) |
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213 { |
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214 error ("indexed assignment for matrix properties is not implemented"); |
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215 } |
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216 |
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217 octave_value |
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218 octave_matrix::struct_elt_val (const string& nm, bool silent) const |
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219 { |
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220 octave_value retval; |
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221 |
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222 double nr = static_cast<double> (matrix.rows ()); |
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223 double nc = static_cast<double> (matrix.cols ()); |
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224 |
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225 if (nm == "rows") |
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226 retval = nr; |
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227 else if (nm == "cols" || nm == "columns") |
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228 retval = nc; |
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229 else if (nm == "size") |
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230 { |
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231 Matrix tmp (1, 2); |
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232 |
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233 tmp.elem (0, 0) = nr; |
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234 tmp.elem (0, 1) = nc; |
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235 |
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236 retval = tmp; |
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237 } |
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238 else if (! silent) |
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239 error ("structure has no member `%s'", nm.c_str ()); |
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240 |
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241 return retval; |
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242 } |
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243 |
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244 octave_variable_reference |
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245 octave_matrix::struct_elt_ref (octave_value *parent, const string& nm) |
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246 { |
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247 return octave_variable_reference (parent, nm); |
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248 } |
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249 |
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250 bool |
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251 octave_matrix::valid_as_scalar_index (void) const |
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252 { |
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253 // XXX FIXME XXX |
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254 return false; |
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255 } |
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256 |
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257 bool |
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258 octave_matrix::is_true (void) const |
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259 { |
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260 bool retval = false; |
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261 |
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262 if (rows () == 0 || columns () == 0) |
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263 { |
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264 int flag = Vpropagate_empty_matrices; |
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265 |
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266 if (flag < 0) |
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267 warning ("empty matrix used in conditional expression"); |
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268 else if (flag == 0) |
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269 error ("empty matrix used in conditional expression"); |
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270 } |
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271 else |
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272 { |
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273 Matrix m = (matrix.all ()) . all (); |
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274 |
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275 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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276 } |
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277 |
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278 return retval; |
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279 } |
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280 |
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281 double |
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282 octave_matrix::double_value (bool) const |
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283 { |
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284 double retval = octave_NaN; |
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285 |
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286 // XXX FIXME XXX -- maybe this should be a function, valid_as_scalar() |
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287 if ((rows () == 1 && columns () == 1) |
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288 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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289 retval = matrix (0, 0); |
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290 else |
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291 gripe_invalid_conversion ("real matrix", "real scalar"); |
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292 |
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293 return retval; |
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294 } |
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295 |
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296 Complex |
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297 octave_matrix::complex_value (bool) const |
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298 { |
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299 Complex retval (octave_NaN, octave_NaN); |
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300 |
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301 if ((rows () == 1 && columns () == 1) |
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302 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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303 retval = matrix (0, 0); |
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304 else |
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305 gripe_invalid_conversion ("real matrix", "complex scalar"); |
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306 |
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307 return retval; |
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308 } |
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309 |
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310 octave_value |
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311 octave_matrix::convert_to_str (void) const |
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312 { |
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313 octave_value retval; |
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314 |
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315 int nr = matrix.rows (); |
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316 int nc = matrix.columns (); |
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317 |
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318 if (nr == 0 && nc == 0) |
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319 { |
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320 char s = '\0'; |
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321 retval = octave_value (&s); |
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322 } |
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323 else |
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324 { |
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325 if (nr == 0 || nc == 0) |
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326 { |
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327 char s = '\0'; |
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328 retval = octave_value (&s); |
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329 } |
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330 else |
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331 { |
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332 charMatrix chm (nr, nc); |
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333 |
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334 for (int j = 0; j < nc; j++) |
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335 { |
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336 for (int i = 0; i < nr; i++) |
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337 { |
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338 double d = matrix (i, j); |
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339 |
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340 if (xisnan (d)) |
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341 { |
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342 ::error ("invalid conversion from NaN to character"); |
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343 return retval; |
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344 } |
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345 else |
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346 { |
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347 // XXX FIXME XXX -- warn about out of range |
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348 // conversions? |
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349 |
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350 int ival = NINT (d); |
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351 chm (i, j) = (char) ival; |
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352 } |
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353 } |
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354 } |
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355 |
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356 retval = octave_value (chm, 1); |
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357 } |
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358 } |
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359 |
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360 return retval; |
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361 } |
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362 |
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363 void |
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364 octave_matrix::print (ostream& os, bool pr_as_read_syntax) const |
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365 { |
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366 print_raw (os, pr_as_read_syntax); |
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367 newline (os); |
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368 } |
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369 |
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370 void |
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371 octave_matrix::print_raw (ostream& os, bool pr_as_read_syntax) const |
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372 { |
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373 octave_print_internal (os, matrix, pr_as_read_syntax, |
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374 current_print_indent_level ()); |
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375 } |
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376 |
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377 bool |
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378 octave_matrix::print_name_tag (ostream& os, const string& name) const |
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379 { |
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380 bool retval = false; |
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381 |
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382 int nr = rows (); |
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383 int nc = columns (); |
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384 |
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385 indent (os); |
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386 |
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387 if (nr == 1 && nc == 1 || (nr == 0 || nc == 0)) |
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388 os << name << " = "; |
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389 else |
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390 { |
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391 os << name << " ="; |
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392 newline (os); |
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393 newline (os); |
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394 retval = true; |
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395 } |
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396 |
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397 return retval; |
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398 } |
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399 |
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400 /* |
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401 ;;; Local Variables: *** |
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402 ;;; mode: C++ *** |
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403 ;;; End: *** |
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404 */ |
