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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 "lo-ieee.h" |
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32 #include "lo-utils.h" |
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33 #include "mx-base.h" |
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34 |
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35 #include "gripes.h" |
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36 #include "mappers.h" |
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37 #include "oct-obj.h" |
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38 #include "ops.h" |
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39 #include "ov-scalar.h" |
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40 #include "ov-re-mat.h" |
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41 #include "pr-output.h" |
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42 |
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43 octave_allocator |
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44 octave_matrix::allocator (sizeof (octave_matrix)); |
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45 |
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46 int |
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47 octave_matrix::t_id (-1); |
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48 |
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49 const string |
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50 octave_matrix::t_name ("matrix"); |
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51 |
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52 octave_matrix::octave_matrix (const RowVector& v, int pcv) |
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53 : octave_base_value (), |
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54 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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55 ? Matrix (v.transpose ()) : Matrix (v)) { } |
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56 |
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57 octave_matrix::octave_matrix (const ColumnVector& v, int pcv) |
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58 : octave_base_value (), |
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59 matrix ((pcv < 0 && Vprefer_column_vectors) || pcv |
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60 ? Matrix (v) : Matrix (v.transpose ())) { } |
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61 |
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62 octave_value * |
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63 octave_matrix::try_narrowing_conversion (void) |
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64 { |
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65 octave_value *retval = 0; |
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66 |
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67 int nr = matrix.rows (); |
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68 int nc = matrix.cols (); |
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69 |
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70 if (nr == 1 && nc == 1) |
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71 retval = new octave_scalar (matrix (0, 0)); |
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72 |
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73 return retval; |
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74 } |
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75 |
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76 octave_value |
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77 octave_matrix::index (const octave_value_list& idx) const |
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78 { |
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79 octave_value retval; |
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80 |
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81 int len = idx.length (); |
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82 |
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83 switch (len) |
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84 { |
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85 case 2: |
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86 { |
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87 idx_vector i = idx (0).index_vector (); |
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88 idx_vector j = idx (1).index_vector (); |
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89 |
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90 retval = Matrix (matrix.index (i, j)); |
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91 } |
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92 break; |
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93 |
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94 case 1: |
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95 { |
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96 idx_vector i = idx (0).index_vector (); |
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97 |
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98 retval = Matrix (matrix.index (i)); |
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99 } |
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100 break; |
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101 |
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102 default: |
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103 error ("invalid number of indices (%d) for matrix value", len); |
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104 break; |
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105 } |
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106 |
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107 return retval; |
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108 } |
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109 |
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110 extern void assign (Array2<double>&, const Array2<double>&); |
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111 |
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112 void |
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113 octave_matrix::assign (const octave_value_list& idx, const Matrix& rhs) |
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114 { |
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115 int len = idx.length (); |
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116 |
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117 switch (len) |
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118 { |
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119 case 2: |
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120 { |
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121 idx_vector i = idx (0).index_vector (); |
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122 idx_vector j = idx (1).index_vector (); |
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123 |
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124 matrix.set_index (i); |
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125 matrix.set_index (j); |
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126 |
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127 ::assign (matrix, rhs); |
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128 } |
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129 break; |
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130 |
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131 case 1: |
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132 { |
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133 idx_vector i = idx (0).index_vector (); |
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134 |
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135 matrix.set_index (i); |
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136 |
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137 ::assign (matrix, rhs); |
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138 } |
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139 break; |
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140 |
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141 default: |
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142 error ("invalid number of indices (%d) for indexed matrix assignment", |
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143 len); |
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144 break; |
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145 } |
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146 } |
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147 |
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148 bool |
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149 octave_matrix::valid_as_scalar_index (void) const |
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150 { |
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151 // XXX FIXME XXX |
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152 return false; |
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153 } |
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154 |
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155 bool |
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156 octave_matrix::is_true (void) const |
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157 { |
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158 bool retval = false; |
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159 |
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160 if (rows () == 0 || columns () == 0) |
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161 { |
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162 int flag = Vpropagate_empty_matrices; |
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163 |
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164 if (flag < 0) |
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165 warning ("empty matrix used in conditional expression"); |
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166 else if (flag == 0) |
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167 error ("empty matrix used in conditional expression"); |
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168 } |
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169 else |
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170 { |
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171 Matrix m = (matrix.all ()) . all (); |
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172 |
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173 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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174 } |
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175 |
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176 return retval; |
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177 } |
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178 |
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179 double |
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180 octave_matrix::double_value (bool) const |
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181 { |
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182 double retval = octave_NaN; |
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183 |
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184 // XXX FIXME XXX -- maybe this should be a function, valid_as_scalar() |
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185 if ((rows () == 1 && columns () == 1) |
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186 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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187 retval = matrix (0, 0); |
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188 else |
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189 gripe_invalid_conversion ("real matrix", "real scalar"); |
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190 |
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191 return retval; |
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192 } |
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193 |
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194 Complex |
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195 octave_matrix::complex_value (bool) const |
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196 { |
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197 Complex retval (octave_NaN, octave_NaN); |
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198 |
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199 if ((rows () == 1 && columns () == 1) |
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200 || (Vdo_fortran_indexing && rows () > 0 && columns () > 0)) |
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201 retval = matrix (0, 0); |
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202 else |
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203 gripe_invalid_conversion ("real matrix", "complex scalar"); |
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204 |
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205 return retval; |
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206 } |
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207 |
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208 octave_value |
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209 octave_matrix::convert_to_str (void) const |
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210 { |
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211 octave_value retval; |
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212 |
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213 int nr = matrix.rows (); |
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214 int nc = matrix.columns (); |
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215 |
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216 if (nr == 0 && nc == 0) |
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217 { |
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218 char s = '\0'; |
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219 retval = octave_value (&s); |
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220 } |
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221 else |
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222 { |
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223 if (nr == 0 || nc == 0) |
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224 { |
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225 char s = '\0'; |
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226 retval = octave_value (&s); |
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227 } |
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228 else |
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229 { |
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230 charMatrix chm (nr, nc); |
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231 |
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232 for (int j = 0; j < nc; j++) |
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233 { |
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234 for (int i = 0; i < nr; i++) |
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235 { |
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236 double d = matrix (i, j); |
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237 |
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238 if (xisnan (d)) |
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239 { |
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240 ::error ("invalid conversion from NaN to character"); |
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241 return retval; |
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242 } |
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243 else |
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244 { |
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245 // XXX FIXME XXX -- warn about out of range |
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246 // conversions? |
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247 |
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248 int ival = NINT (d); |
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249 chm (i, j) = (char) ival; |
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250 } |
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251 } |
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252 } |
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253 |
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254 retval = octave_value (chm, 1); |
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255 } |
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256 } |
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257 |
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258 return retval; |
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259 } |
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260 |
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261 void |
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262 octave_matrix::print (ostream& os, bool pr_as_read_syntax) |
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263 { |
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264 octave_print_internal (os, matrix, pr_as_read_syntax, struct_indent); |
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265 } |
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266 |
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267 /* |
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268 ;;; Local Variables: *** |
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269 ;;; mode: C++ *** |
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270 ;;; End: *** |
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271 */ |
