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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 "mappers.h" |
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39 #include "oct-obj.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 |
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45 octave_allocator |
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46 octave_matrix::allocator (sizeof (octave_matrix)); |
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47 |
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48 int |
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49 octave_matrix::t_id (-1); |
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50 |
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51 const string |
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52 octave_matrix::t_name ("matrix"); |
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53 |
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54 octave_matrix::octave_matrix (const RowVector& v, int pcv) |
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55 : octave_base_value (), |
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56 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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57 ? Matrix (v.transpose ()) : Matrix (v)) { } |
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58 |
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59 octave_matrix::octave_matrix (const ColumnVector& v, int pcv) |
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60 : octave_base_value (), |
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61 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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62 ? Matrix (v) : Matrix (v.transpose ())) { } |
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63 |
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64 octave_value * |
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65 octave_matrix::try_narrowing_conversion (void) |
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66 { |
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67 octave_value *retval = 0; |
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68 |
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69 int nr = matrix.rows (); |
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70 int nc = matrix.cols (); |
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71 |
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72 if (nr == 1 && nc == 1) |
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73 retval = new octave_scalar (matrix (0, 0)); |
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74 |
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75 return retval; |
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76 } |
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77 |
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78 octave_value |
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79 octave_matrix::index (const octave_value_list& idx) const |
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80 { |
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81 octave_value retval; |
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82 |
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83 int len = idx.length (); |
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84 |
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85 switch (len) |
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86 { |
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87 case 2: |
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88 { |
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89 idx_vector i = idx (0).index_vector (); |
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90 idx_vector j = idx (1).index_vector (); |
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91 |
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92 retval = Matrix (matrix.index (i, j)); |
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93 } |
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94 break; |
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95 |
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96 case 1: |
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97 { |
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98 idx_vector i = idx (0).index_vector (); |
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99 |
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100 retval = Matrix (matrix.index (i)); |
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101 } |
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102 break; |
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103 |
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104 default: |
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105 error ("invalid number of indices (%d) for matrix value", len); |
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106 break; |
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107 } |
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108 |
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109 return retval; |
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110 } |
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111 |
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112 extern void assign (Array2<double>&, const Array2<double>&); |
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113 |
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114 void |
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115 octave_matrix::assign (const octave_value_list& idx, const Matrix& rhs) |
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116 { |
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117 int len = idx.length (); |
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118 |
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119 switch (len) |
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120 { |
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121 case 2: |
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122 { |
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123 idx_vector i = idx (0).index_vector (); |
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124 idx_vector j = idx (1).index_vector (); |
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125 |
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126 matrix.set_index (i); |
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127 matrix.set_index (j); |
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128 |
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129 ::assign (matrix, rhs); |
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130 } |
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131 break; |
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132 |
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133 case 1: |
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134 { |
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135 idx_vector i = idx (0).index_vector (); |
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136 |
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137 matrix.set_index (i); |
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138 |
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139 ::assign (matrix, rhs); |
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140 } |
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141 break; |
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142 |
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143 default: |
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144 error ("invalid number of indices (%d) for indexed matrix assignment", |
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145 len); |
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146 break; |
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147 } |
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148 } |
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149 |
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150 bool |
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151 octave_matrix::valid_as_scalar_index (void) const |
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152 { |
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153 // XXX FIXME XXX |
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154 return false; |
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155 } |
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156 |
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157 bool |
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158 octave_matrix::is_true (void) const |
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159 { |
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160 bool retval = false; |
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161 |
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162 if (rows () == 0 || columns () == 0) |
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163 { |
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164 int flag = Vpropagate_empty_matrices; |
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165 |
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166 if (flag < 0) |
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167 warning ("empty matrix used in conditional expression"); |
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168 else if (flag == 0) |
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169 error ("empty matrix used in conditional expression"); |
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170 } |
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171 else |
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172 { |
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173 Matrix m = (matrix.all ()) . all (); |
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174 |
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175 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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176 } |
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177 |
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178 return retval; |
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179 } |
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180 |
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181 double |
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182 octave_matrix::double_value (bool) const |
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183 { |
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184 double retval = octave_NaN; |
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185 |
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186 // XXX FIXME XXX -- maybe this should be a function, valid_as_scalar() |
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187 if ((rows () == 1 && columns () == 1) |
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188 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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189 retval = matrix (0, 0); |
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190 else |
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191 gripe_invalid_conversion ("real matrix", "real scalar"); |
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192 |
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193 return retval; |
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194 } |
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195 |
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196 Complex |
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197 octave_matrix::complex_value (bool) const |
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198 { |
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199 Complex retval (octave_NaN, octave_NaN); |
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200 |
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201 if ((rows () == 1 && columns () == 1) |
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202 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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203 retval = matrix (0, 0); |
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204 else |
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205 gripe_invalid_conversion ("real matrix", "complex scalar"); |
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206 |
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207 return retval; |
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208 } |
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209 |
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210 octave_value |
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211 octave_matrix::convert_to_str (void) const |
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212 { |
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213 octave_value retval; |
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214 |
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215 int nr = matrix.rows (); |
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216 int nc = matrix.columns (); |
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217 |
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218 if (nr == 0 && nc == 0) |
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219 { |
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220 char s = '\0'; |
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221 retval = octave_value (&s); |
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222 } |
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223 else |
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224 { |
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225 if (nr == 0 || nc == 0) |
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226 { |
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227 char s = '\0'; |
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228 retval = octave_value (&s); |
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229 } |
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230 else |
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231 { |
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232 charMatrix chm (nr, nc); |
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233 |
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234 for (int j = 0; j < nc; j++) |
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235 { |
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236 for (int i = 0; i < nr; i++) |
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237 { |
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238 double d = matrix (i, j); |
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239 |
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240 if (xisnan (d)) |
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241 { |
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242 ::error ("invalid conversion from NaN to character"); |
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243 return retval; |
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244 } |
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245 else |
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246 { |
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247 // XXX FIXME XXX -- warn about out of range |
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248 // conversions? |
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249 |
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250 int ival = NINT (d); |
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251 chm (i, j) = (char) ival; |
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252 } |
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253 } |
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254 } |
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255 |
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256 retval = octave_value (chm, 1); |
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257 } |
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258 } |
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259 |
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260 return retval; |
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261 } |
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262 |
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263 void |
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264 octave_matrix::print (ostream& os, bool pr_as_read_syntax) const |
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265 { |
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266 indent (os); |
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267 print_raw (os, pr_as_read_syntax); |
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268 newline (os); |
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269 } |
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270 |
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271 void |
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272 octave_matrix::print_raw (ostream& os, bool pr_as_read_syntax) const |
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273 { |
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274 octave_print_internal (os, matrix, pr_as_read_syntax, |
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275 current_print_indent_level ()); |
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276 } |
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277 |
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278 bool |
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279 octave_matrix::print_name_tag (ostream& os, const string& name) const |
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280 { |
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281 bool retval = false; |
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282 |
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283 int nr = rows (); |
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284 int nc = columns (); |
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285 |
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286 indent (os); |
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287 |
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288 if (nr == 1 && nc == 1 || (nr == 0 || nc == 0)) |
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289 os << name << " = "; |
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290 else |
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291 { |
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292 os << name << " ="; |
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293 newline (os); |
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294 newline (os); |
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295 retval = true; |
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296 } |
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297 |
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298 return retval; |
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299 } |
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300 |
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301 /* |
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302 ;;; Local Variables: *** |
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303 ;;; mode: C++ *** |
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304 ;;; End: *** |
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305 */ |
