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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 (octave_value_h) |
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24 #define octave_value_h 1 |
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25 |
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26 #if defined (__GNUG__) |
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27 #pragma interface |
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28 #endif |
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29 |
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30 #include <cstdlib> |
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31 |
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32 #include <string> |
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33 |
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34 class ostream; |
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35 |
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36 #include "Range.h" |
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37 #include "idx-vector.h" |
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38 #include "mx-base.h" |
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39 #include "oct-alloc.h" |
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40 #include "str-vec.h" |
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41 |
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42 class Octave_map; |
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43 class octave_stream; |
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44 class octave_function; |
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45 class octave_value_list; |
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46 class octave_lvalue; |
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47 |
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48 // Constants. |
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49 |
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50 // This just provides a way to avoid infinite recursion when building |
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51 // octave_value objects. |
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52 |
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53 class |
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54 octave_xvalue |
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55 { |
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56 public: |
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57 |
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58 octave_xvalue (void) { } |
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59 }; |
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60 |
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61 class octave_value; |
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62 |
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63 // XXX FIXME XXX -- these should probably really be inside the scope |
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64 // of the octave_value class, but the cygwin32 beta16 version of g++ |
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65 // can't handle that. |
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66 |
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67 typedef octave_value (*unary_op_fcn) |
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68 (const octave_value&); |
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69 |
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70 typedef void (*non_const_unary_op_fcn) |
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71 (octave_value&); |
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72 |
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73 typedef octave_value (*binary_op_fcn) |
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74 (const octave_value&, const octave_value&); |
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75 |
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76 typedef octave_value (*assign_op_fcn) |
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77 (octave_value&, const octave_value_list&, const octave_value&); |
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78 |
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79 typedef octave_value * (*type_conv_fcn) (const octave_value&); |
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80 |
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81 class |
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82 octave_value |
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83 { |
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84 public: |
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85 |
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86 enum unary_op |
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87 { |
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88 not, |
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89 uminus, |
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90 transpose, |
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91 hermitian, |
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92 incr, |
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93 decr, |
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94 num_unary_ops, |
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95 unknown_unary_op |
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96 }; |
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97 |
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98 enum binary_op |
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99 { |
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100 add, |
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101 sub, |
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102 mul, |
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103 div, |
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104 pow, |
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105 ldiv, |
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106 lshift, |
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107 rshift, |
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108 lt, |
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109 le, |
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110 eq, |
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111 ge, |
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112 gt, |
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113 ne, |
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114 el_mul, |
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115 el_div, |
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116 el_pow, |
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117 el_ldiv, |
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118 el_and, |
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119 el_or, |
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120 struct_ref, |
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121 num_binary_ops, |
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122 unknown_binary_op |
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123 }; |
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124 |
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125 enum assign_op |
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126 { |
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127 asn_eq, |
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128 add_eq, |
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129 sub_eq, |
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130 mul_eq, |
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131 div_eq, |
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132 ldiv_eq, |
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133 lshift_eq, |
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134 rshift_eq, |
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135 el_mul_eq, |
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136 el_div_eq, |
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137 el_ldiv_eq, |
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138 el_and_eq, |
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139 el_or_eq, |
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140 num_assign_ops, |
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141 unknown_assign_op |
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142 }; |
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143 |
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144 static string unary_op_as_string (unary_op); |
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145 |
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146 static string binary_op_as_string (binary_op); |
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147 |
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148 static string assign_op_as_string (assign_op); |
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149 |
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150 enum magic_colon { magic_colon_t }; |
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151 enum all_va_args { all_va_args_t }; |
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152 |
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153 octave_value (void); |
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154 octave_value (double d); |
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155 octave_value (const Matrix& m); |
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156 octave_value (const DiagMatrix& d); |
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157 octave_value (const RowVector& v, int pcv = -1); |
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158 octave_value (const ColumnVector& v, int pcv = -1); |
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159 octave_value (const Complex& C); |
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160 octave_value (const ComplexMatrix& m); |
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161 octave_value (const ComplexDiagMatrix& d); |
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162 octave_value (const ComplexRowVector& v, int pcv = -1); |
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163 octave_value (const ComplexColumnVector& v, int pcv = -1); |
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164 octave_value (bool b); |
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165 octave_value (const boolMatrix& bm); |
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166 octave_value (char c); |
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167 octave_value (const char *s); |
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168 octave_value (const string& s); |
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169 octave_value (const string_vector& s); |
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170 octave_value (const charMatrix& chm, bool is_string = false); |
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171 octave_value (double base, double limit, double inc); |
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172 octave_value (const Range& r); |
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173 octave_value (const Octave_map& m); |
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174 octave_value (octave_stream *s, int n); |
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175 octave_value (octave_function *f); |
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176 octave_value (const octave_value_list& m); |
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177 octave_value (octave_value::magic_colon); |
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178 octave_value (octave_value::all_va_args); |
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179 |
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180 octave_value (octave_value *new_rep); |
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181 |
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182 // Copy constructor. |
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183 |
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184 octave_value (const octave_value& a) |
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185 { |
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186 rep = a.rep; |
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187 rep->count++; |
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188 } |
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189 |
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190 // Delete the representation of this constant if the count drops to |
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191 // zero. |
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192 |
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193 virtual ~octave_value (void); |
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194 |
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195 // This should only be called for derived types. |
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196 |
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197 virtual octave_value *clone (void); |
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198 |
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199 void make_unique (void) |
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200 { |
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201 if (rep->count > 1) |
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202 { |
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203 --rep->count; |
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204 rep = rep->clone (); |
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205 rep->count = 1; |
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206 } |
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207 } |
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208 |
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209 void *operator new (size_t size) |
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210 { return allocator.alloc (size); } |
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211 |
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212 void operator delete (void *p, size_t size) |
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213 { allocator.free (p, size); } |
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214 |
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215 // Simple assignment. |
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216 |
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217 octave_value& operator = (const octave_value& a) |
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218 { |
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219 if (rep != a.rep) |
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220 { |
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221 if (--rep->count == 0) |
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222 delete rep; |
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223 |
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224 rep = a.rep; |
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225 rep->count++; |
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226 } |
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227 |
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228 return *this; |
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229 } |
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230 |
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231 virtual type_conv_fcn numeric_conversion_function (void) const |
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232 { return rep->numeric_conversion_function (); } |
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233 |
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234 void maybe_mutate (void); |
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235 |
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236 virtual octave_value *try_narrowing_conversion (void) |
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237 { return rep->try_narrowing_conversion (); } |
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238 |
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239 virtual octave_value do_index_op (const octave_value_list& idx) |
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240 { return rep->do_index_op (idx); } |
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241 |
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242 virtual octave_value_list |
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243 do_index_op (int nargout, const octave_value_list& idx); |
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244 |
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245 void assign (assign_op, const octave_value& rhs); |
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246 |
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247 void assign (assign_op, const octave_value_list& idx, |
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248 const octave_value& rhs); |
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249 |
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250 virtual void |
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251 assign_struct_elt (assign_op, const string& elt_nm, |
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252 const octave_value& rhs); |
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253 |
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254 virtual void |
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255 assign_struct_elt (assign_op, const string& elt_nm, |
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256 const octave_value_list& idx, const octave_value& rhs); |
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257 |
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258 virtual idx_vector index_vector (void) const |
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259 { return rep->index_vector (); } |
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260 |
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261 virtual octave_value |
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262 do_struct_elt_index_op (const string& nm, bool silent = false) |
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263 { return rep->do_struct_elt_index_op (nm, silent); } |
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264 |
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265 virtual octave_value |
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266 do_struct_elt_index_op (const string& nm, const octave_value_list& idx, |
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267 bool silent = false) |
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268 { return rep->do_struct_elt_index_op (nm, idx, silent); } |
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269 |
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270 octave_lvalue struct_elt_ref (const string& nm); |
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271 |
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272 virtual octave_lvalue |
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273 struct_elt_ref (octave_value *parent, const string& nm); |
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274 |
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275 // Size. |
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276 |
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277 virtual int rows (void) const |
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278 { return rep->rows (); } |
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279 |
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280 virtual int columns (void) const |
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281 { return rep->columns (); } |
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282 |
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283 virtual int length (void) const |
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284 { return rep->length (); } |
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285 |
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286 // Does this constant have a type? Both of these are provided since |
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287 // it is sometimes more natural to write is_undefined() instead of |
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288 // ! is_defined(). |
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289 |
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290 virtual bool is_defined (void) const |
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291 { return rep->is_defined (); } |
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292 |
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293 bool is_undefined (void) const |
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294 { return ! is_defined (); } |
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295 |
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296 virtual bool is_real_scalar (void) const |
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297 { return rep->is_real_scalar (); } |
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298 |
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299 virtual bool is_real_matrix (void) const |
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300 { return rep->is_real_matrix (); } |
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301 |
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302 virtual bool is_complex_scalar (void) const |
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303 { return rep->is_complex_scalar (); } |
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304 |
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305 virtual bool is_complex_matrix (void) const |
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306 { return rep->is_complex_matrix (); } |
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307 |
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308 virtual bool is_char_matrix (void) const |
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309 { return rep->is_char_matrix (); } |
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310 |
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311 virtual bool is_string (void) const |
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312 { return rep->is_string (); } |
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313 |
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314 virtual bool is_range (void) const |
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315 { return rep->is_range (); } |
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316 |
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317 virtual bool is_map (void) const |
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318 { return rep->is_map (); } |
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319 |
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320 virtual bool is_list (void) const |
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321 { return rep->is_list (); } |
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322 |
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323 virtual bool is_magic_colon (void) const |
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324 { return rep->is_magic_colon (); } |
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325 |
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326 virtual bool is_all_va_args (void) const |
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327 { return rep->is_all_va_args (); } |
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328 |
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329 // Are any or all of the elements in this constant nonzero? |
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330 |
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331 virtual octave_value all (void) const |
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332 { return rep->all (); } |
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333 |
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334 virtual octave_value any (void) const |
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335 { return rep->any (); } |
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336 |
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337 // Other type stuff. |
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338 |
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339 virtual bool is_real_type (void) const |
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340 { return rep->is_real_type (); } |
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341 |
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342 virtual bool is_complex_type (void) const |
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343 { return rep->is_complex_type (); } |
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344 |
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345 virtual bool is_scalar_type (void) const |
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346 { return rep->is_scalar_type (); } |
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347 |
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348 virtual bool is_matrix_type (void) const |
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349 { return rep->is_matrix_type (); } |
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350 |
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351 virtual bool is_numeric_type (void) const |
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352 { return rep->is_numeric_type (); } |
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353 |
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354 virtual bool valid_as_scalar_index (void) const |
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355 { return rep->valid_as_scalar_index (); } |
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356 |
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357 virtual bool valid_as_zero_index (void) const |
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358 { return rep->valid_as_zero_index (); } |
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359 |
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360 // Does this constant correspond to a truth value? |
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361 |
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362 virtual bool is_true (void) const |
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363 { return rep->is_true (); } |
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364 |
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365 // Is at least one of the dimensions of this constant zero? |
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366 |
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367 virtual bool is_empty (void) const |
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368 { return rep->is_empty (); } |
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369 |
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370 // Are the dimensions of this constant zero by zero? |
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371 |
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372 virtual bool is_zero_by_zero (void) const |
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373 { return rep->is_zero_by_zero (); } |
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374 |
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375 virtual bool is_constant (void) const |
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376 { return rep->is_constant (); } |
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377 |
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378 virtual bool is_function (void) const |
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379 { return rep->is_function (); } |
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380 |
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381 // Values. |
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382 |
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383 octave_value eval (void) { return *this; } |
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384 |
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385 virtual int int_value (bool req_int = false, bool frc_str_conv = false) const |
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386 { return rep->int_value (req_int, frc_str_conv); } |
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387 |
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388 virtual int nint_value (bool frc_str_conv = false) const |
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389 { return rep->nint_value (frc_str_conv); } |
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390 |
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391 virtual double double_value (bool frc_str_conv = false) const |
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392 { return rep->double_value (frc_str_conv); } |
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393 |
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394 virtual double scalar_value (bool frc_str_conv = false) const |
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395 { return rep->scalar_value (frc_str_conv); } |
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396 |
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397 virtual Matrix matrix_value (bool frc_str_conv = false) const |
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398 { return rep->matrix_value (frc_str_conv); } |
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399 |
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400 virtual Complex complex_value (bool frc_str_conv = false) const |
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401 { return rep->complex_value (frc_str_conv); } |
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402 |
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403 virtual ComplexMatrix complex_matrix_value (bool frc_str_conv = false) const |
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404 { return rep->complex_matrix_value (frc_str_conv); } |
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405 |
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406 virtual charMatrix char_matrix_value (bool frc_str_conv = false) const |
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407 { return rep->char_matrix_value (frc_str_conv); } |
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408 |
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409 virtual string_vector all_strings (void) const |
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410 { return rep->all_strings (); } |
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411 |
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412 virtual string string_value (void) const |
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413 { return rep->string_value (); } |
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414 |
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415 virtual Range range_value (void) const |
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416 { return rep->range_value (); } |
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417 |
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418 virtual Octave_map map_value (void) const; |
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419 |
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420 virtual octave_stream *stream_value (void) const; |
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421 |
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422 virtual int stream_number (void) const; |
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423 |
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424 virtual octave_function *function_value (bool silent = false); |
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425 |
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426 virtual octave_value_list list_value (void) const; |
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427 |
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428 virtual bool bool_value (void) const |
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429 { return rep->bool_value (); } |
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430 |
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431 virtual boolMatrix bool_matrix_value (void) const |
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432 { return rep->bool_matrix_value (); } |
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433 |
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434 ColumnVector vector_value (bool frc_str_conv = false, |
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435 bool frc_vec_conv = false) const; |
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436 |
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437 ComplexColumnVector |
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438 complex_vector_value (bool frc_str_conv = false, |
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439 bool frc_vec_conv = false) const; |
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440 |
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441 // Conversions. These should probably be private. If a user of this |
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442 // class wants a certain kind of constant, he should simply ask for |
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443 // it, and we should convert it if possible. |
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444 |
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445 virtual octave_value convert_to_str (void) const |
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446 { return rep->convert_to_str (); } |
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447 |
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448 virtual void convert_to_row_or_column_vector (void) |
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449 { rep->convert_to_row_or_column_vector (); } |
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450 |
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451 virtual void print (ostream& os, bool pr_as_read_syntax = false) const |
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452 { rep->print (os, pr_as_read_syntax); } |
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453 |
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454 virtual void print_raw (ostream& os, bool pr_as_read_syntax = false) const |
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455 { rep->print_raw (os, pr_as_read_syntax); } |
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456 |
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457 virtual bool print_name_tag (ostream& os, const string& name) const |
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458 { return rep->print_name_tag (os, name); } |
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459 |
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460 void print_with_name (ostream& os, const string& name, |
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461 bool print_padding = true) const; |
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462 |
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463 virtual int type_id (void) const { return rep->type_id (); } |
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464 |
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465 virtual string type_name (void) const { return rep->type_name (); } |
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466 |
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3203
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467 // Unary and binary operations. |
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468 |
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469 friend octave_value do_unary_op (octave_value::unary_op, |
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470 const octave_value&); |
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471 |
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472 void do_non_const_unary_op (octave_value::unary_op); |
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2376
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473 |
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2575
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474 friend octave_value do_binary_op (octave_value::binary_op, |
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475 const octave_value&, |
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476 const octave_value&); |
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2376
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477 |
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478 protected: |
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479 |
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480 octave_value (const octave_xvalue&) : rep (0) { } |
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481 |
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2903
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482 void reset_indent_level (void) const |
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483 { curr_print_indent_level = 0; } |
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484 |
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485 void increment_indent_level (void) const |
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486 { curr_print_indent_level += 2; } |
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487 |
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488 void decrement_indent_level (void) const |
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489 { curr_print_indent_level -= 2; } |
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490 |
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491 int current_print_indent_level (void) const |
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492 { return curr_print_indent_level; } |
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493 |
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494 void newline (ostream& os) const; |
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495 |
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496 void indent (ostream& os) const; |
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497 |
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498 void reset (void) const; |
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499 |
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2376
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500 private: |
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501 |
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2477
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502 static octave_allocator allocator; |
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503 |
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2376
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504 union |
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505 { |
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506 octave_value *rep; // The real representation. |
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507 int count; // A reference count. |
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508 }; |
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2413
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509 |
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2880
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510 bool convert_and_assign (assign_op, const octave_value_list& idx, |
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2413
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511 const octave_value& rhs); |
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512 |
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2880
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513 bool try_assignment_with_conversion (assign_op, |
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514 const octave_value_list& idx, |
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2413
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515 const octave_value& rhs); |
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516 |
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2880
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517 bool try_assignment (assign_op, const octave_value_list& idx, |
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2413
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518 const octave_value& rhs); |
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2903
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519 |
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520 static int curr_print_indent_level; |
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521 static bool beginning_of_line; |
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3204
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522 |
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523 binary_op op_eq_to_binary_op (assign_op op); |
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524 |
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525 void simple_assign (assign_op orig_op, const octave_value_list& idx, |
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526 const octave_value& rhs); |
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2376
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527 }; |
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528 |
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3203
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529 #define OV_UNOP_FN(name) \ |
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530 inline octave_value \ |
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531 name (const octave_value& a) \ |
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532 { \ |
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533 return do_unary_op (octave_value::name, a); \ |
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534 } |
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535 |
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536 #define OV_UNOP_OP(name, op) \ |
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537 inline octave_value \ |
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538 operator op (const octave_value& a) \ |
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539 { \ |
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540 return name (a); \ |
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541 } |
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542 |
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543 #define OV_UNOP_FN_OP(name, op) \ |
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544 OV_UNOP_FN (name) \ |
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545 OV_UNOP_OP (name, op) |
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546 |
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547 OV_UNOP_FN_OP (not, !) |
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548 OV_UNOP_FN_OP (uminus, -) |
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549 |
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550 OV_UNOP_FN (transpose) |
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551 OV_UNOP_FN (hermitian) |
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552 |
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553 // No simple way to define these for prefix and suffix ops? |
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554 // |
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555 // incr |
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556 // decr |
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557 |
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558 #define OV_BINOP_FN(name) \ |
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559 inline octave_value \ |
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560 name (const octave_value& a1, const octave_value& a2) \ |
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561 { \ |
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562 return do_binary_op (octave_value::name, a1, a2); \ |
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563 } |
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564 |
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565 #define OV_BINOP_OP(name, op) \ |
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566 inline octave_value \ |
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567 operator op (const octave_value& a1, const octave_value& a2) \ |
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568 { \ |
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569 return name (a1, a2); \ |
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570 } |
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571 |
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572 #define OV_BINOP_FN_OP(name, op) \ |
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573 OV_BINOP_FN (name) \ |
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574 OV_BINOP_OP (name, op) |
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575 |
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576 OV_BINOP_FN_OP (add, +) |
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577 OV_BINOP_FN_OP (sub, -) |
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578 OV_BINOP_FN_OP (mul, *) |
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579 OV_BINOP_FN_OP (div, /) |
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580 |
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581 OV_BINOP_FN (pow) |
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582 OV_BINOP_FN (ldiv) |
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583 OV_BINOP_FN (lshift) |
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584 OV_BINOP_FN (rshift) |
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585 |
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586 OV_BINOP_FN_OP (lt, <) |
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587 OV_BINOP_FN_OP (le, <=) |
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588 OV_BINOP_FN_OP (eq, ==) |
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589 OV_BINOP_FN_OP (ge, >=) |
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590 OV_BINOP_FN_OP (gt, >) |
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591 OV_BINOP_FN_OP (ne, !=) |
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592 |
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593 OV_BINOP_FN (el_mul) |
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594 OV_BINOP_FN (el_div) |
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595 OV_BINOP_FN (el_pow) |
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596 OV_BINOP_FN (el_ldiv) |
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597 OV_BINOP_FN (el_and) |
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598 OV_BINOP_FN (el_or) |
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599 |
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600 OV_BINOP_FN (struct_ref) |
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601 |
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2376
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602 // If TRUE, allow assignments like |
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603 // |
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604 // octave> A(1) = 3; A(2) = 5 |
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605 // |
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606 // for A already defined and a matrix type. |
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607 extern bool Vdo_fortran_indexing; |
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608 |
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609 // Should we allow things like: |
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610 // |
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611 // octave> 'abc' + 0 |
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612 // 97 98 99 |
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613 // |
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614 // to happen? A positive value means yes. A negative value means |
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615 // yes, but print a warning message. Zero means it should be |
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616 // considered an error. |
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|
617 extern int Vimplicit_str_to_num_ok; |
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618 |
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619 // Should we allow silent conversion of complex to real when a real |
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|
620 // type is what we're really looking for? A positive value means yes. |
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|
621 // A negative value means yes, but print a warning message. Zero |
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|
622 // means it should be considered an error. |
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|
623 extern int Vok_to_lose_imaginary_part; |
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624 |
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|
625 // If TRUE, create column vectors when doing assignments like: |
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|
626 // |
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|
627 // octave> A(1) = 3; A(2) = 5 |
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628 // |
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|
629 // (for A undefined). Only matters when resize_on_range_error is also |
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|
630 // TRUE. |
|
|
631 extern bool Vprefer_column_vectors; |
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632 |
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|
633 // If TRUE, print the name along with the value. |
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|
634 extern bool Vprint_answer_id_name; |
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|
635 |
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|
636 // Should operations on empty matrices return empty matrices or an |
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|
637 // error? A positive value means yes. A negative value means yes, |
|
|
638 // but print a warning message. Zero means it should be considered an |
|
|
639 // error. |
|
|
640 extern int Vpropagate_empty_matrices; |
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|
641 |
|
|
642 // How many levels of structure elements should we print? |
|
|
643 extern int Vstruct_levels_to_print; |
|
|
644 |
|
|
645 // Allow divide by zero errors to be suppressed. |
|
|
646 extern bool Vwarn_divide_by_zero; |
|
|
647 |
|
3195
|
648 // If TRUE, resize matrices when performing and indexed assignment and |
|
|
649 // the indices are outside the current bounds. |
|
|
650 extern bool Vresize_on_range_error; |
|
|
651 |
|
2376
|
652 // Indentation level for structures. |
|
|
653 extern int struct_indent; |
|
|
654 |
|
|
655 extern void increment_struct_indent (void); |
|
|
656 extern void decrement_struct_indent (void); |
|
|
657 |
|
2880
|
658 // Indentation level for lists. |
|
|
659 extern int list_indent; |
|
|
660 |
|
|
661 extern void increment_list_indent (void); |
|
|
662 extern void decrement_list_indent (void); |
|
|
663 |
|
2376
|
664 extern void install_types (void); |
|
|
665 |
|
|
666 #endif |
|
|
667 |
|
|
668 /* |
|
|
669 ;; Local Variables: *** |
|
|
670 ;; mode: C++ *** |
|
|
671 ;; End: *** |
|
|
672 */ |
