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1 /* |
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2 |
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3 Copyright (C) 1996 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 "Array-flags.h" |
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32 |
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33 #include "ov.h" |
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34 #include "ov-base.h" |
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35 #include "ov-scalar.h" |
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36 #include "ov-re-mat.h" |
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37 #include "ov-complex.h" |
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38 #include "ov-cx-mat.h" |
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39 #include "ov-ch-mat.h" |
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40 #include "ov-str-mat.h" |
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41 #include "ov-range.h" |
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42 #include "ov-struct.h" |
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43 #include "ov-colon.h" |
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44 #include "ov-va-args.h" |
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45 #include "ov-typeinfo.h" |
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46 |
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47 #include "defun.h" |
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48 #include "gripes.h" |
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49 #include "pager.h" |
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50 #include "pr-output.h" |
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51 #include "utils.h" |
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52 #include "variables.h" |
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53 |
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54 // If TRUE, allow assignments like |
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55 // |
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56 // octave> A(1) = 3; A(2) = 5 |
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57 // |
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58 // for A already defined and a matrix type. |
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59 bool Vdo_fortran_indexing; |
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60 |
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61 // Should we allow things like: |
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62 // |
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63 // octave> 'abc' + 0 |
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64 // 97 98 99 |
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65 // |
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66 // to happen? A positive value means yes. A negative value means |
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67 // yes, but print a warning message. Zero means it should be |
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68 // considered an error. |
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69 int Vimplicit_str_to_num_ok; |
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70 |
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71 // Should we allow silent conversion of complex to real when a real |
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72 // type is what we're really looking for? A positive value means yes. |
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73 // A negative value means yes, but print a warning message. Zero |
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74 // means it should be considered an error. |
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75 int Vok_to_lose_imaginary_part; |
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76 |
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77 // If TRUE, create column vectors when doing assignments like: |
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78 // |
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79 // octave> A(1) = 3; A(2) = 5 |
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80 // |
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81 // (for A undefined). Only matters when resize_on_range_error is also |
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82 // TRUE. |
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83 bool Vprefer_column_vectors; |
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84 |
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85 // If TRUE, prefer logical (zore-one) indexing over normal indexing |
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86 // when there is a conflice. For example, given a = [2, 3], the |
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87 // expression a ([1, 1]) would return [2 3] (instead of [2 2], which |
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88 // would be returned if prefer_zero_one_indxing were FALSE). |
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89 bool Vprefer_zero_one_indexing; |
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90 |
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91 // If TRUE, print the name along with the value. |
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92 bool Vprint_answer_id_name; |
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93 |
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94 // Should operations on empty matrices return empty matrices or an |
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95 // error? A positive value means yes. A negative value means yes, |
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96 // but print a warning message. Zero means it should be considered an |
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97 // error. |
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98 int Vpropagate_empty_matrices; |
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99 |
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100 // If TRUE, resize matrices when performing and indexed assignment and |
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101 // the indices are outside the current bounds. |
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102 bool Vresize_on_range_error; |
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103 |
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104 // How many levels of structure elements should we print? |
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105 int Vstruct_levels_to_print; |
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106 |
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107 // Allow divide by zero errors to be suppressed. |
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108 bool Vwarn_divide_by_zero; |
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109 |
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110 // Indentation level for structures. |
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111 int struct_indent = 0; |
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112 |
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113 // XXX FIXME XXX |
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114 void |
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115 increment_struct_indent (void) |
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116 { |
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117 struct_indent += 2; |
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118 } |
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119 |
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120 void |
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121 decrement_struct_indent (void) |
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122 { |
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123 struct_indent -= 2; |
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124 } |
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125 |
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126 // Octave's value type. |
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127 |
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128 string |
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129 octave_value::binary_op_as_string (binary_op op) |
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130 { |
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131 string retval; |
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132 |
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133 switch (op) |
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134 { |
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135 case add: |
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136 retval = "+"; |
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137 break; |
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138 |
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139 case sub: |
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140 retval = "-"; |
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141 break; |
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142 |
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143 case mul: |
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144 retval = "*"; |
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145 break; |
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146 |
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147 case div: |
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148 retval = "/"; |
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149 break; |
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150 |
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151 case pow: |
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152 retval = "^"; |
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153 break; |
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154 |
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155 case ldiv: |
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156 retval = "\\"; |
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157 break; |
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158 |
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159 case lt: |
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160 retval = "<"; |
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161 break; |
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162 |
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163 case le: |
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164 retval = "<="; |
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165 break; |
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166 |
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167 case eq: |
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168 retval = "=="; |
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169 break; |
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170 |
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171 case ge: |
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172 retval = ">="; |
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173 break; |
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174 |
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175 case gt: |
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176 retval = ">"; |
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177 break; |
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178 |
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179 case ne: |
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180 retval = "!="; |
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181 break; |
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182 |
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183 case el_mul: |
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184 retval = ".*"; |
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185 break; |
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186 |
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187 case el_div: |
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188 retval = "./"; |
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189 break; |
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190 |
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191 case el_pow: |
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192 retval = ".^"; |
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193 break; |
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194 |
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195 case el_ldiv: |
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196 retval = ".\\"; |
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197 break; |
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198 |
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199 case el_and: |
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200 retval = "&"; |
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201 break; |
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202 |
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203 case el_or: |
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204 retval = "|"; |
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205 break; |
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206 |
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207 case struct_ref: |
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208 retval = "."; |
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209 break; |
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210 |
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211 default: |
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212 retval = "<unknown>"; |
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213 } |
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214 |
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215 return retval; |
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216 } |
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217 |
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218 octave_value::octave_value (void) |
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219 : rep (new octave_base_value ()) { rep->count = 1; } |
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220 |
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221 octave_value::octave_value (double d) |
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222 : rep (new octave_scalar (d)) { rep->count = 1; } |
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223 |
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224 octave_value::octave_value (const Matrix& m) |
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225 : rep (new octave_matrix (m)) |
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226 { |
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227 rep->count = 1; |
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228 maybe_mutate (); |
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229 } |
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230 |
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231 octave_value::octave_value (const DiagMatrix& d) |
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232 : rep (new octave_matrix (d)) |
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233 { |
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234 rep->count = 1; |
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235 maybe_mutate (); |
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236 } |
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237 |
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238 octave_value::octave_value (const RowVector& v, int pcv) |
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239 : rep (new octave_matrix (v, pcv)) |
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240 { |
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241 rep->count = 1; |
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242 maybe_mutate (); |
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243 } |
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244 |
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245 octave_value::octave_value (const ColumnVector& v, int pcv) |
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246 : rep (new octave_matrix (v, pcv)) |
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247 { |
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248 rep->count = 1; |
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249 maybe_mutate (); |
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250 } |
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251 |
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252 octave_value::octave_value (const Complex& C) |
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253 : rep (new octave_complex (C)) |
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254 { |
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255 rep->count = 1; |
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256 maybe_mutate (); |
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257 } |
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258 |
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259 octave_value::octave_value (const ComplexMatrix& m) |
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260 : rep (new octave_complex_matrix (m)) |
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261 { |
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262 rep->count = 1; |
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263 maybe_mutate (); |
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264 } |
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265 |
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266 octave_value::octave_value (const ComplexDiagMatrix& d) |
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267 : rep (new octave_complex_matrix (d)) |
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268 { |
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269 rep->count = 1; |
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270 maybe_mutate (); |
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271 } |
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272 |
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273 octave_value::octave_value (const ComplexRowVector& v, int pcv) |
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274 : rep (new octave_complex_matrix (v, pcv)) |
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275 { |
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276 rep->count = 1; |
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277 maybe_mutate (); |
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278 } |
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279 |
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280 octave_value::octave_value (const ComplexColumnVector& v, int pcv) |
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281 : rep (new octave_complex_matrix (v, pcv)) |
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282 { |
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283 rep->count = 1; |
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284 maybe_mutate (); |
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285 } |
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286 |
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287 octave_value::octave_value (const char *s) |
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288 : rep (new octave_char_matrix_str (s)) |
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289 { |
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290 rep->count = 1; |
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291 maybe_mutate (); |
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292 } |
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293 |
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294 octave_value::octave_value (const string& s) |
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295 : rep (new octave_char_matrix_str (s)) |
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296 { |
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297 rep->count = 1; |
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298 maybe_mutate (); |
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299 } |
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300 |
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301 octave_value::octave_value (const string_vector& s) |
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302 : rep (new octave_char_matrix_str (s)) |
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303 { |
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304 rep->count = 1; |
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305 maybe_mutate (); |
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306 } |
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307 |
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308 octave_value::octave_value (const charMatrix& chm, bool is_string) |
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309 : rep (0) |
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310 { |
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311 if (is_string) |
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312 rep = new octave_char_matrix_str (chm); |
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313 else |
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314 rep = new octave_char_matrix (chm); |
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315 |
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316 rep->count = 1; |
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317 maybe_mutate (); |
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318 } |
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319 |
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320 octave_value::octave_value (double base, double limit, double inc) |
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321 : rep (new octave_range (base, limit, inc)) |
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322 { |
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323 rep->count = 1; |
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324 maybe_mutate (); |
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325 } |
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326 |
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327 octave_value::octave_value (const Range& r) |
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328 : rep (new octave_range (r)) |
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329 { |
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330 rep->count = 1; |
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331 maybe_mutate (); |
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332 } |
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333 |
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334 octave_value::octave_value (const Octave_map& m) |
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335 : rep (new octave_struct (m)) { rep->count = 1; } |
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336 |
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337 octave_value::octave_value (octave_value::magic_colon) |
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338 : rep (new octave_magic_colon ()) { rep->count = 1; } |
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339 |
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340 octave_value::octave_value (octave_value::all_va_args) |
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341 : rep (new octave_all_va_args ()) { rep->count = 1; } |
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342 |
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343 octave_value::octave_value (octave_value *new_rep) |
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344 : rep (new_rep) { rep->count = 1; } |
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345 |
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346 octave_value::~octave_value (void) |
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347 { |
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348 #if defined (MDEBUG) |
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349 cerr << "~octave_value: rep: " << rep |
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350 << " rep->count: " << rep->count << "\n"; |
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351 #endif |
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352 |
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353 if (rep && --rep->count == 0) |
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354 { |
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355 delete rep; |
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356 rep = 0; |
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357 } |
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358 } |
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359 |
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360 void |
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361 octave_value::maybe_mutate (void) |
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362 { |
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363 octave_value *tmp = rep->try_narrowing_conversion (); |
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364 |
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365 if (tmp && tmp != rep) |
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366 { |
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367 if (--rep->count == 0) |
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368 delete rep; |
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369 |
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370 rep = tmp; |
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371 rep->count = 1; |
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372 } |
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373 } |
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374 |
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375 static void |
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376 gripe_no_conversion (const string& tn1, const string& tn2) |
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377 { |
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378 error ("no suitable conversion found for assignment of %s to indexed %s", |
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379 tn2.c_str (), tn1.c_str ()); |
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380 } |
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381 |
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382 octave_value& |
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383 octave_value::assign (const octave_value_list& idx, const octave_value& rhs) |
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384 { |
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385 make_unique (); |
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386 |
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387 bool assignment_ok = try_assignment (idx, rhs); |
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388 |
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389 if (! (error_state || assignment_ok)) |
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390 { |
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391 assignment_ok = try_assignment_with_conversion (idx, rhs); |
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392 |
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393 if (! (error_state || assignment_ok)) |
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394 gripe_no_conversion (type_name (), rhs.type_name ()); |
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395 } |
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396 |
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397 if (! error_state) |
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398 maybe_mutate (); |
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399 |
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400 return *this; |
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401 } |
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402 |
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403 Octave_map |
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404 octave_value::map_value (void) const |
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405 { |
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406 return rep->map_value (); |
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407 } |
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408 |
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409 ColumnVector |
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410 octave_value::vector_value (bool force_string_conv, |
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411 bool force_vector_conversion) const |
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412 { |
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413 ColumnVector retval; |
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414 |
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415 Matrix m = matrix_value (force_string_conv); |
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416 |
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417 if (error_state) |
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418 return retval; |
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419 |
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420 int nr = m.rows (); |
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421 int nc = m.columns (); |
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422 |
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423 if (nr == 1) |
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424 { |
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425 retval.resize (nc); |
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426 for (int i = 0; i < nc; i++) |
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427 retval (i) = m (0, i); |
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428 } |
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429 else if (nc == 1) |
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430 { |
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431 retval.resize (nr); |
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432 for (int i = 0; i < nr; i++) |
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433 retval (i) = m (i, 0); |
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434 } |
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435 else if (nr > 0 && nc > 0 |
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436 && (Vdo_fortran_indexing || force_vector_conversion)) |
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437 { |
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438 retval.resize (nr * nc); |
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439 int k = 0; |
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440 for (int j = 0; j < nc; j++) |
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441 for (int i = 0; i < nr; i++) |
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442 retval (k++) = m (i, j); |
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443 } |
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444 else |
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445 { |
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446 string tn = type_name (); |
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447 gripe_invalid_conversion (tn.c_str (), "real vector"); |
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448 } |
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449 |
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450 return retval; |
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451 } |
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452 |
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453 ComplexColumnVector |
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454 octave_value::complex_vector_value (bool force_string_conv, |
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455 bool force_vector_conversion) const |
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456 { |
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457 ComplexColumnVector retval; |
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458 |
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459 ComplexMatrix m = complex_matrix_value (force_string_conv); |
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460 |
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461 if (error_state) |
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462 return retval; |
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463 |
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464 int nr = m.rows (); |
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465 int nc = m.columns (); |
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466 |
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467 if (nr == 1) |
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468 { |
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469 retval.resize (nc); |
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470 for (int i = 0; i < nc; i++) |
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471 retval (i) = m (0, i); |
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472 } |
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473 else if (nc == 1) |
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474 { |
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475 retval.resize (nr); |
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476 for (int i = 0; i < nr; i++) |
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477 retval (i) = m (i, 0); |
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478 } |
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479 else if (nr > 0 && nc > 0 |
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480 && (Vdo_fortran_indexing || force_vector_conversion)) |
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481 { |
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482 retval.resize (nr * nc); |
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483 int k = 0; |
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484 for (int j = 0; j < nc; j++) |
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485 for (int i = 0; i < nr; i++) |
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486 retval (k++) = m (i, j); |
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487 } |
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488 else |
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489 { |
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490 string tn = type_name (); |
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491 gripe_invalid_conversion (tn.c_str (), "complex vector"); |
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492 } |
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493 |
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494 return retval; |
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495 } |
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496 |
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497 void |
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498 octave_value::print (void) |
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499 { |
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500 print (octave_stdout); |
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501 } |
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502 |
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503 void |
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504 octave_value::print_with_name (const string& name, bool print_padding) |
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505 { |
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506 print_with_name (octave_stdout, name, print_padding); |
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507 } |
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508 |
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509 void |
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510 octave_value::print_with_name (ostream& output_buf, const string& name, |
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511 bool print_padding) |
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512 { |
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513 bool pad_after = false; |
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514 |
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515 if (Vprint_answer_id_name) |
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516 { |
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517 if (print_as_scalar ()) |
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518 output_buf << name << " = "; |
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519 else if (print_as_structure ()) |
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520 { |
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521 pad_after = true; |
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522 output_buf << name << " ="; |
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523 } |
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524 else |
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525 { |
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526 pad_after = true; |
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527 output_buf << name << " =\n\n"; |
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528 } |
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529 } |
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530 |
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531 print (output_buf); |
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532 |
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533 if (print_padding && pad_after) |
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534 output_buf << "\n"; |
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535 } |
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536 |
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537 bool |
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538 octave_value::print_as_scalar (void) |
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539 { |
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540 int nr = rows (); |
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541 int nc = columns (); |
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542 |
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543 return (is_scalar_type () |
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544 || (is_string () && nr <= 1) |
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545 || (is_matrix_type () |
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546 && ((nr == 1 && nc == 1) |
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547 || nr == 0 |
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548 || nc == 0))); |
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549 } |
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550 |
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551 static void |
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2413
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552 gripe_indexed_assignment (const string& tn1, const string& tn2) |
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553 { |
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554 error ("assignment of %s to indexed %s not implemented", |
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555 tn2.c_str (), tn1.c_str ()); |
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556 } |
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557 |
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558 static void |
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559 gripe_conversion_failed (const string& tn1, const string& tn2) |
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560 { |
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561 error ("type conversion for assignment of %s to indexed %s failed", |
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562 tn2.c_str (), tn1.c_str ()); |
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563 } |
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564 |
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565 bool |
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566 octave_value::convert_and_assign (const octave_value_list& idx, |
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567 const octave_value& rhs) |
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568 { |
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569 bool assignment_ok = false; |
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570 |
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571 int t_lhs = type_id (); |
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572 int t_rhs = rhs.type_id (); |
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573 |
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574 int t_result |
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575 = octave_value_typeinfo::lookup_pref_assign_conv (t_lhs, t_rhs); |
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576 |
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577 if (t_result >= 0) |
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578 { |
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579 octave_value::type_conv_fcn cf |
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580 = octave_value_typeinfo::lookup_widening_op (t_lhs, t_result); |
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581 |
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582 if (cf) |
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583 { |
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584 octave_value *tmp = cf (*rep); |
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585 |
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586 if (tmp) |
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587 { |
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588 if (tmp != rep) |
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589 { |
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590 if (--rep->count == 0) |
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591 delete rep; |
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592 |
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593 rep = tmp; |
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594 rep->count = 1; |
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595 } |
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596 else |
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597 delete tmp; |
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598 |
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599 assignment_ok = try_assignment (idx, rhs); |
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600 } |
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601 else |
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602 gripe_conversion_failed (type_name (), rhs.type_name ()); |
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603 } |
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604 else |
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605 gripe_indexed_assignment (type_name (), rhs.type_name ()); |
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606 } |
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607 |
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608 return (assignment_ok && ! error_state); |
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609 } |
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610 |
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611 bool |
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612 octave_value::try_assignment_with_conversion (const octave_value_list& idx, |
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613 const octave_value& rhs) |
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614 { |
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615 bool assignment_ok = convert_and_assign (idx, rhs); |
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616 |
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617 if (! (error_state || assignment_ok)) |
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618 { |
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619 octave_value tmp_rhs; |
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620 octave_value::type_conv_fcn cf_rhs = rhs.numeric_conversion_function (); |
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621 |
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622 if (cf_rhs) |
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623 tmp_rhs = octave_value (cf_rhs (*rhs.rep)); |
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624 else |
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625 tmp_rhs = rhs; |
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626 |
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627 octave_value *old_rep = 0; |
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|
628 octave_value::type_conv_fcn cf_this = numeric_conversion_function (); |
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629 |
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630 if (cf_this) |
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631 { |
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632 old_rep = rep; |
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633 rep = cf_this (*rep); |
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634 rep->count = 1; |
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635 } |
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636 |
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637 cerr << type_name () << "\n"; |
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|
638 cerr << tmp_rhs.type_name () << "\n"; |
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639 |
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640 if (cf_this || cf_rhs) |
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641 { |
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642 assignment_ok = try_assignment (idx, tmp_rhs); |
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|
643 |
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644 if (! (error_state || assignment_ok)) |
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645 assignment_ok = convert_and_assign (idx, tmp_rhs); |
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|
646 } |
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647 |
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648 if (! assignment_ok && old_rep) |
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649 { |
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650 if (--rep->count == 0) |
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651 delete rep; |
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652 |
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653 rep = old_rep; |
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654 old_rep = 0; |
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|
655 } |
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656 |
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657 if (old_rep && --old_rep->count == 0) |
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658 delete old_rep; |
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659 } |
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660 |
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661 return (assignment_ok && ! error_state); |
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662 } |
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663 |
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664 bool |
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665 octave_value::try_assignment (const octave_value_list& idx, |
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666 const octave_value& rhs) |
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667 { |
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668 bool retval = false; |
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669 |
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|
670 int t_lhs = type_id (); |
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671 int t_rhs = rhs.type_id (); |
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672 |
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673 octave_value::assign_op_fcn f |
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674 = octave_value_typeinfo::lookup_assign_op (t_lhs, t_rhs); |
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675 |
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676 if (f) |
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677 { |
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678 f (*rep, idx, *(rhs.rep)); |
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679 |
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680 retval = (! error_state); |
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681 } |
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682 |
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683 return retval; |
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684 } |
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685 |
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686 static void |
|
2376
|
687 gripe_binary_op (const string& on, const string& tn1, const string& tn2) |
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688 { |
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|
689 error ("binary operator %s not implemented for %s by %s operations", |
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690 on.c_str (), tn1.c_str (), tn2.c_str ()); |
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|
691 } |
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|
692 |
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|
693 octave_value |
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|
694 do_binary_op (octave_value::binary_op op, const octave_value& v1, |
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|
695 const octave_value& v2) |
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|
696 { |
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|
697 octave_value retval; |
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|
698 |
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|
699 int t1 = v1.type_id (); |
|
|
700 int t2 = v2.type_id (); |
|
|
701 |
|
|
702 octave_value::binary_op_fcn f |
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|
703 = octave_value_typeinfo::lookup_binary_op (op, t1, t2); |
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|
704 |
|
|
705 if (f) |
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|
706 retval = f (*v1.rep, *v2.rep); |
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|
707 else |
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|
708 { |
|
|
709 octave_value tv1; |
|
2409
|
710 octave_value::type_conv_fcn cf1 = v1.numeric_conversion_function (); |
|
2376
|
711 |
|
|
712 if (cf1) |
|
|
713 { |
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|
714 tv1 = octave_value (cf1 (*v1.rep)); |
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|
715 t1 = tv1.type_id (); |
|
|
716 } |
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|
717 else |
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|
718 tv1 = v1; |
|
|
719 |
|
|
720 octave_value tv2; |
|
2409
|
721 octave_value::type_conv_fcn cf2 = v2.numeric_conversion_function (); |
|
2376
|
722 |
|
|
723 if (cf2) |
|
|
724 { |
|
|
725 tv2 = octave_value (cf2 (*v2.rep)); |
|
|
726 t2 = tv2.type_id (); |
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|
727 } |
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|
728 else |
|
|
729 tv2 = v2; |
|
|
730 |
|
|
731 if (cf1 || cf2) |
|
|
732 { |
|
|
733 octave_value::binary_op_fcn f |
|
|
734 = octave_value_typeinfo::lookup_binary_op (op, t1, t2); |
|
|
735 |
|
|
736 if (f) |
|
|
737 retval = f (*tv1.rep, *tv2.rep); |
|
|
738 else |
|
|
739 gripe_binary_op (octave_value::binary_op_as_string (op), |
|
|
740 v1.type_name (), v2.type_name ()); |
|
|
741 } |
|
|
742 else |
|
|
743 gripe_binary_op (octave_value::binary_op_as_string (op), |
|
|
744 v1.type_name (), v2.type_name ()); |
|
|
745 } |
|
|
746 |
|
|
747 return retval; |
|
|
748 } |
|
|
749 |
|
|
750 void |
|
|
751 install_types (void) |
|
|
752 { |
|
|
753 octave_base_value::register_type (); |
|
|
754 octave_scalar::register_type (); |
|
|
755 octave_complex::register_type (); |
|
|
756 octave_matrix::register_type (); |
|
|
757 octave_complex_matrix::register_type (); |
|
|
758 octave_range::register_type (); |
|
|
759 octave_char_matrix::register_type (); |
|
|
760 octave_char_matrix_str::register_type (); |
|
|
761 octave_struct::register_type (); |
|
|
762 octave_all_va_args::register_type (); |
|
|
763 octave_magic_colon::register_type (); |
|
|
764 } |
|
|
765 |
|
|
766 static int |
|
|
767 do_fortran_indexing (void) |
|
|
768 { |
|
|
769 Vdo_fortran_indexing = check_preference ("do_fortran_indexing"); |
|
|
770 |
|
|
771 liboctave_dfi_flag = Vdo_fortran_indexing; |
|
|
772 |
|
|
773 return 0; |
|
|
774 } |
|
|
775 |
|
|
776 static int |
|
|
777 implicit_str_to_num_ok (void) |
|
|
778 { |
|
|
779 Vimplicit_str_to_num_ok = check_preference ("implicit_str_to_num_ok"); |
|
|
780 |
|
|
781 return 0; |
|
|
782 } |
|
|
783 |
|
|
784 static int |
|
|
785 ok_to_lose_imaginary_part (void) |
|
|
786 { |
|
|
787 Vok_to_lose_imaginary_part = check_preference ("ok_to_lose_imaginary_part"); |
|
|
788 |
|
|
789 return 0; |
|
|
790 } |
|
|
791 |
|
|
792 static int |
|
|
793 prefer_column_vectors (void) |
|
|
794 { |
|
|
795 Vprefer_column_vectors |
|
|
796 = check_preference ("prefer_column_vectors"); |
|
|
797 |
|
|
798 liboctave_pcv_flag = Vprefer_column_vectors; |
|
|
799 |
|
|
800 return 0; |
|
|
801 } |
|
|
802 |
|
|
803 static int |
|
|
804 prefer_zero_one_indexing (void) |
|
|
805 { |
|
|
806 Vprefer_zero_one_indexing = check_preference ("prefer_zero_one_indexing"); |
|
|
807 |
|
|
808 liboctave_pzo_flag = Vprefer_zero_one_indexing; |
|
|
809 |
|
|
810 return 0; |
|
|
811 } |
|
|
812 |
|
|
813 static int |
|
|
814 print_answer_id_name (void) |
|
|
815 { |
|
|
816 Vprint_answer_id_name = check_preference ("print_answer_id_name"); |
|
|
817 |
|
|
818 return 0; |
|
|
819 } |
|
|
820 |
|
|
821 static int |
|
|
822 propagate_empty_matrices (void) |
|
|
823 { |
|
|
824 Vpropagate_empty_matrices = check_preference ("propagate_empty_matrices"); |
|
|
825 |
|
|
826 return 0; |
|
|
827 } |
|
|
828 |
|
|
829 static int |
|
|
830 resize_on_range_error (void) |
|
|
831 { |
|
|
832 Vresize_on_range_error = check_preference ("resize_on_range_error"); |
|
|
833 |
|
|
834 liboctave_rre_flag = Vresize_on_range_error; |
|
|
835 |
|
|
836 return 0; |
|
|
837 } |
|
|
838 |
|
|
839 static int |
|
|
840 struct_levels_to_print (void) |
|
|
841 { |
|
|
842 double val; |
|
|
843 if (builtin_real_scalar_variable ("struct_levels_to_print", val) |
|
|
844 && ! xisnan (val)) |
|
|
845 { |
|
|
846 int ival = NINT (val); |
|
|
847 if (ival >= 0 && (double) ival == val) |
|
|
848 { |
|
|
849 Vstruct_levels_to_print = ival; |
|
|
850 return 0; |
|
|
851 } |
|
|
852 } |
|
|
853 gripe_invalid_value_specified ("struct_levels_to_print"); |
|
|
854 return -1; |
|
|
855 } |
|
|
856 |
|
|
857 static int |
|
|
858 warn_divide_by_zero (void) |
|
|
859 { |
|
|
860 Vwarn_divide_by_zero = check_preference ("warn_divide_by_zero"); |
|
|
861 |
|
|
862 return 0; |
|
|
863 } |
|
|
864 |
|
|
865 void |
|
|
866 symbols_of_value (void) |
|
|
867 { |
|
|
868 DEFVAR (do_fortran_indexing, 0.0, 0, do_fortran_indexing, |
|
|
869 "allow single indices for matrices"); |
|
|
870 |
|
|
871 DEFVAR (implicit_str_to_num_ok, 0.0, 0, implicit_str_to_num_ok, |
|
|
872 "allow implicit string to number conversion"); |
|
|
873 |
|
|
874 DEFVAR (ok_to_lose_imaginary_part, "warn", 0, ok_to_lose_imaginary_part, |
|
|
875 "silently convert from complex to real by dropping imaginary part"); |
|
|
876 |
|
|
877 DEFVAR (prefer_column_vectors, 1.0, 0, prefer_column_vectors, |
|
|
878 "prefer column/row vectors"); |
|
|
879 |
|
|
880 DEFVAR (prefer_zero_one_indexing, 0.0, 0, prefer_zero_one_indexing, |
|
|
881 "when there is a conflict, prefer zero-one style indexing"); |
|
|
882 |
|
|
883 DEFVAR (print_answer_id_name, 1.0, 0, print_answer_id_name, |
|
|
884 "set output style to print `var_name = ...'"); |
|
|
885 |
|
|
886 DEFVAR (propagate_empty_matrices, 1.0, 0, propagate_empty_matrices, |
|
|
887 "operations on empty matrices return an empty matrix, not an error"); |
|
|
888 |
|
|
889 DEFVAR (resize_on_range_error, 1.0, 0, resize_on_range_error, |
|
|
890 "enlarge matrices on assignment"); |
|
|
891 |
|
|
892 DEFVAR (struct_levels_to_print, 2.0, 0, struct_levels_to_print, |
|
|
893 "number of levels of structure elements to print"); |
|
|
894 |
|
|
895 DEFVAR (warn_divide_by_zero, 1.0, 0, warn_divide_by_zero, |
|
|
896 "If TRUE, warn about division by zero"); |
|
|
897 } |
|
|
898 |
|
|
899 /* |
|
|
900 ;;; Local Variables: *** |
|
|
901 ;;; mode: C++ *** |
|
|
902 ;;; End: *** |
|
|
903 */ |
