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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 // Simple assignment. |
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210 |
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211 octave_value& operator = (const octave_value& a) |
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212 { |
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213 if (rep != a.rep) |
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214 { |
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215 if (--rep->count == 0) |
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216 delete rep; |
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217 |
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218 rep = a.rep; |
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219 rep->count++; |
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220 } |
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221 |
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222 return *this; |
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223 } |
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224 |
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225 int get_count (void) { return rep->count; } |
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226 |
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227 virtual type_conv_fcn numeric_conversion_function (void) const |
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228 { return rep->numeric_conversion_function (); } |
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229 |
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230 void maybe_mutate (void); |
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231 |
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232 virtual octave_value *try_narrowing_conversion (void) |
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233 { return rep->try_narrowing_conversion (); } |
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234 |
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235 virtual octave_value do_index_op (const octave_value_list& idx) |
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236 { return rep->do_index_op (idx); } |
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237 |
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238 virtual octave_value_list |
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239 do_index_op (int nargout, const octave_value_list& idx); |
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240 |
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241 void assign (assign_op, const octave_value& rhs); |
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242 |
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243 void assign (assign_op, const octave_value_list& idx, |
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244 const octave_value& rhs); |
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245 |
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246 virtual void |
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247 assign_struct_elt (assign_op, const string& elt_nm, |
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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_list& idx, const octave_value& rhs); |
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253 |
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254 virtual idx_vector index_vector (void) const |
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255 { return rep->index_vector (); } |
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256 |
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257 virtual octave_value |
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258 do_struct_elt_index_op (const string& nm, bool silent = false) |
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259 { return rep->do_struct_elt_index_op (nm, silent); } |
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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, const octave_value_list& idx, |
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263 bool silent = false) |
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264 { return rep->do_struct_elt_index_op (nm, idx, silent); } |
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265 |
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266 octave_lvalue struct_elt_ref (const string& nm); |
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267 |
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268 virtual octave_lvalue |
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269 struct_elt_ref (octave_value *parent, const string& nm); |
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270 |
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271 // Size. |
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272 |
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273 virtual int rows (void) const |
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274 { return rep->rows (); } |
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275 |
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276 virtual int columns (void) const |
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277 { return rep->columns (); } |
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278 |
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279 virtual int length (void) const |
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280 { return rep->length (); } |
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281 |
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282 // Does this constant have a type? Both of these are provided since |
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283 // it is sometimes more natural to write is_undefined() instead of |
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284 // ! is_defined(). |
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285 |
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286 virtual bool is_defined (void) const |
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287 { return rep->is_defined (); } |
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288 |
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289 bool is_undefined (void) const |
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290 { return ! is_defined (); } |
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291 |
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292 virtual bool is_real_scalar (void) const |
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293 { return rep->is_real_scalar (); } |
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294 |
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295 virtual bool is_real_matrix (void) const |
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296 { return rep->is_real_matrix (); } |
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297 |
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298 virtual bool is_complex_scalar (void) const |
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299 { return rep->is_complex_scalar (); } |
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300 |
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301 virtual bool is_complex_matrix (void) const |
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302 { return rep->is_complex_matrix (); } |
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303 |
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304 virtual bool is_char_matrix (void) const |
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305 { return rep->is_char_matrix (); } |
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306 |
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307 virtual bool is_string (void) const |
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308 { return rep->is_string (); } |
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309 |
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310 virtual bool is_range (void) const |
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311 { return rep->is_range (); } |
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312 |
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313 virtual bool is_map (void) const |
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314 { return rep->is_map (); } |
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315 |
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316 virtual bool is_list (void) const |
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317 { return rep->is_list (); } |
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318 |
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319 virtual bool is_magic_colon (void) const |
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320 { return rep->is_magic_colon (); } |
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321 |
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322 virtual bool is_all_va_args (void) const |
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323 { return rep->is_all_va_args (); } |
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324 |
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325 // Are any or all of the elements in this constant nonzero? |
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326 |
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327 virtual octave_value all (void) const |
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328 { return rep->all (); } |
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329 |
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330 virtual octave_value any (void) const |
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331 { return rep->any (); } |
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332 |
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333 // Other type stuff. |
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334 |
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335 virtual bool is_bool_type (void) const |
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336 { return rep->is_bool_type (); } |
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337 |
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338 virtual bool is_real_type (void) const |
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339 { return rep->is_real_type (); } |
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340 |
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341 virtual bool is_complex_type (void) const |
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342 { return rep->is_complex_type (); } |
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343 |
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344 virtual bool is_scalar_type (void) const |
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345 { return rep->is_scalar_type (); } |
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346 |
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347 virtual bool is_matrix_type (void) const |
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348 { return rep->is_matrix_type (); } |
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349 |
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350 virtual bool is_numeric_type (void) const |
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351 { return rep->is_numeric_type (); } |
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352 |
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353 virtual bool valid_as_scalar_index (void) const |
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354 { return rep->valid_as_scalar_index (); } |
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355 |
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356 virtual bool valid_as_zero_index (void) const |
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357 { return rep->valid_as_zero_index (); } |
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358 |
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359 // Does this constant correspond to a truth value? |
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360 |
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361 virtual bool is_true (void) const |
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362 { return rep->is_true (); } |
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363 |
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364 // Is at least one of the dimensions of this constant zero? |
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365 |
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366 virtual bool is_empty (void) const |
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367 { return rep->is_empty (); } |
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368 |
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369 // Are the dimensions of this constant zero by zero? |
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370 |
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371 virtual bool is_zero_by_zero (void) const |
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372 { return rep->is_zero_by_zero (); } |
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373 |
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374 virtual bool is_constant (void) const |
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375 { return rep->is_constant (); } |
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376 |
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377 virtual bool is_function (void) const |
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378 { return rep->is_function (); } |
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379 |
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380 virtual bool is_builtin_function (void) const |
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381 { return rep->is_builtin_function (); } |
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382 |
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383 virtual bool is_dld_function (void) const |
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384 { return rep->is_dld_function (); } |
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385 |
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386 // Values. |
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387 |
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388 octave_value eval (void) { return *this; } |
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389 |
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390 virtual int int_value (bool req_int = false, bool frc_str_conv = false) const |
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391 { return rep->int_value (req_int, frc_str_conv); } |
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392 |
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393 virtual int nint_value (bool frc_str_conv = false) const |
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394 { return rep->nint_value (frc_str_conv); } |
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395 |
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396 virtual double double_value (bool frc_str_conv = false) const |
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397 { return rep->double_value (frc_str_conv); } |
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398 |
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399 virtual double scalar_value (bool frc_str_conv = false) const |
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400 { return rep->scalar_value (frc_str_conv); } |
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401 |
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402 virtual Matrix matrix_value (bool frc_str_conv = false) const |
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403 { return rep->matrix_value (frc_str_conv); } |
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404 |
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405 virtual Complex complex_value (bool frc_str_conv = false) const |
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406 { return rep->complex_value (frc_str_conv); } |
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407 |
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408 virtual ComplexMatrix complex_matrix_value (bool frc_str_conv = false) const |
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409 { return rep->complex_matrix_value (frc_str_conv); } |
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410 |
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411 virtual charMatrix char_matrix_value (bool frc_str_conv = false) const |
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412 { return rep->char_matrix_value (frc_str_conv); } |
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413 |
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414 virtual string_vector all_strings (void) const |
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415 { return rep->all_strings (); } |
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416 |
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417 virtual string string_value (void) const |
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418 { return rep->string_value (); } |
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419 |
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420 virtual Range range_value (void) const |
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421 { return rep->range_value (); } |
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422 |
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423 virtual Octave_map map_value (void) const; |
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424 |
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425 virtual octave_stream *stream_value (void) const; |
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426 |
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427 virtual int stream_number (void) const; |
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428 |
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429 virtual octave_function *function_value (bool silent = false); |
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430 |
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431 virtual octave_value_list list_value (void) const; |
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432 |
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433 virtual bool bool_value (void) const |
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434 { return rep->bool_value (); } |
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435 |
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436 virtual boolMatrix bool_matrix_value (void) const |
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437 { return rep->bool_matrix_value (); } |
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438 |
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439 ColumnVector vector_value (bool frc_str_conv = false, |
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440 bool frc_vec_conv = false) const; |
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441 |
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442 ComplexColumnVector |
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443 complex_vector_value (bool frc_str_conv = false, |
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444 bool frc_vec_conv = false) const; |
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445 |
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446 // Conversions. These should probably be private. If a user of this |
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447 // class wants a certain kind of constant, he should simply ask for |
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448 // it, and we should convert it if possible. |
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449 |
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450 virtual octave_value convert_to_str (void) const |
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451 { return rep->convert_to_str (); } |
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452 |
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453 virtual void convert_to_row_or_column_vector (void) |
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454 { rep->convert_to_row_or_column_vector (); } |
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455 |
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456 virtual void print (ostream& os, bool pr_as_read_syntax = false) const |
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457 { rep->print (os, pr_as_read_syntax); } |
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458 |
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459 virtual void print_raw (ostream& os, bool pr_as_read_syntax = false) const |
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460 { rep->print_raw (os, pr_as_read_syntax); } |
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461 |
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462 virtual bool print_name_tag (ostream& os, const string& name) const |
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463 { return rep->print_name_tag (os, name); } |
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2376
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464 |
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465 void print_with_name (ostream& os, const string& name, |
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2903
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466 bool print_padding = true) const; |
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2376
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467 |
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468 virtual int type_id (void) const { return rep->type_id (); } |
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469 |
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470 virtual string type_name (void) const { return rep->type_name (); } |
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471 |
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3203
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472 // Unary and binary operations. |
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473 |
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474 friend octave_value do_unary_op (octave_value::unary_op, |
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475 const octave_value&); |
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476 |
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477 void do_non_const_unary_op (octave_value::unary_op); |
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478 |
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3205
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479 void do_non_const_unary_op (octave_value::unary_op, |
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480 const octave_value_list& idx); |
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481 |
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2575
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482 friend octave_value do_binary_op (octave_value::binary_op, |
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483 const octave_value&, |
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484 const octave_value&); |
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2376
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485 |
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3301
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486 const octave_value& get_rep (void) const { return *rep; } |
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487 |
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2376
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488 protected: |
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489 |
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490 octave_value (const octave_xvalue&) : rep (0) { } |
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491 |
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2903
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492 void reset_indent_level (void) const |
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493 { curr_print_indent_level = 0; } |
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494 |
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495 void increment_indent_level (void) const |
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496 { curr_print_indent_level += 2; } |
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497 |
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498 void decrement_indent_level (void) const |
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499 { curr_print_indent_level -= 2; } |
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500 |
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501 int current_print_indent_level (void) const |
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502 { return curr_print_indent_level; } |
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503 |
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504 void newline (ostream& os) const; |
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505 |
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506 void indent (ostream& os) const; |
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507 |
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508 void reset (void) const; |
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509 |
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2376
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510 private: |
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511 |
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512 union |
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513 { |
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514 octave_value *rep; // The real representation. |
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515 int count; // A reference count. |
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516 }; |
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2413
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517 |
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2880
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518 bool convert_and_assign (assign_op, const octave_value_list& idx, |
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2413
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519 const octave_value& rhs); |
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520 |
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2880
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521 bool try_assignment_with_conversion (assign_op, |
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522 const octave_value_list& idx, |
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2413
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523 const octave_value& rhs); |
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524 |
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2880
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525 bool try_assignment (assign_op, const octave_value_list& idx, |
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2413
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526 const octave_value& rhs); |
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2903
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527 |
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528 static int curr_print_indent_level; |
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529 static bool beginning_of_line; |
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3204
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530 |
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3205
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531 assign_op unary_op_to_assign_op (unary_op op); |
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532 |
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3204
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533 binary_op op_eq_to_binary_op (assign_op op); |
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534 |
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535 void simple_assign (assign_op orig_op, const octave_value_list& idx, |
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536 const octave_value& rhs); |
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3219
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537 |
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538 DECLARE_OCTAVE_ALLOCATOR |
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2376
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539 }; |
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540 |
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3203
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541 #define OV_UNOP_FN(name) \ |
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542 inline octave_value \ |
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543 name (const octave_value& a) \ |
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544 { \ |
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545 return do_unary_op (octave_value::name, a); \ |
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546 } |
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547 |
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548 #define OV_UNOP_OP(name, op) \ |
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549 inline octave_value \ |
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550 operator op (const octave_value& a) \ |
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551 { \ |
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552 return name (a); \ |
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553 } |
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554 |
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555 #define OV_UNOP_FN_OP(name, op) \ |
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556 OV_UNOP_FN (name) \ |
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557 OV_UNOP_OP (name, op) |
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558 |
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559 OV_UNOP_FN_OP (not, !) |
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560 OV_UNOP_FN_OP (uminus, -) |
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561 |
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562 OV_UNOP_FN (transpose) |
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563 OV_UNOP_FN (hermitian) |
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564 |
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565 // No simple way to define these for prefix and suffix ops? |
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566 // |
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567 // incr |
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568 // decr |
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569 |
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570 #define OV_BINOP_FN(name) \ |
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571 inline octave_value \ |
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572 name (const octave_value& a1, const octave_value& a2) \ |
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573 { \ |
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574 return do_binary_op (octave_value::name, a1, a2); \ |
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575 } |
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576 |
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577 #define OV_BINOP_OP(name, op) \ |
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578 inline octave_value \ |
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579 operator op (const octave_value& a1, const octave_value& a2) \ |
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580 { \ |
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581 return name (a1, a2); \ |
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582 } |
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583 |
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584 #define OV_BINOP_FN_OP(name, op) \ |
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585 OV_BINOP_FN (name) \ |
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586 OV_BINOP_OP (name, op) |
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587 |
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588 OV_BINOP_FN_OP (add, +) |
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589 OV_BINOP_FN_OP (sub, -) |
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590 OV_BINOP_FN_OP (mul, *) |
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591 OV_BINOP_FN_OP (div, /) |
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592 |
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593 OV_BINOP_FN (pow) |
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594 OV_BINOP_FN (ldiv) |
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595 OV_BINOP_FN (lshift) |
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596 OV_BINOP_FN (rshift) |
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597 |
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598 OV_BINOP_FN_OP (lt, <) |
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599 OV_BINOP_FN_OP (le, <=) |
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600 OV_BINOP_FN_OP (eq, ==) |
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|
601 OV_BINOP_FN_OP (ge, >=) |
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602 OV_BINOP_FN_OP (gt, >) |
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603 OV_BINOP_FN_OP (ne, !=) |
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604 |
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605 OV_BINOP_FN (el_mul) |
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606 OV_BINOP_FN (el_div) |
|
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607 OV_BINOP_FN (el_pow) |
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608 OV_BINOP_FN (el_ldiv) |
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609 OV_BINOP_FN (el_and) |
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610 OV_BINOP_FN (el_or) |
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611 |
|
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612 OV_BINOP_FN (struct_ref) |
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|
613 |
|
3219
|
614 // T_ID is the type id of struct objects, set by register_type(). |
|
|
615 // T_NAME is the type name of struct objects. |
|
|
616 #define DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA \ |
|
|
617 public: \ |
|
|
618 int type_id (void) const { return t_id; } \ |
|
|
619 string type_name (void) const { return t_name; } \ |
|
3301
|
620 static volatile int static_type_id (void) { return t_id; } \ |
|
3219
|
621 static void register_type (void) \ |
|
|
622 { t_id = octave_value_typeinfo::register_type (t_name); } \ |
|
|
623 \ |
|
|
624 private: \ |
|
3301
|
625 static volatile int t_id; \ |
|
3219
|
626 static const string t_name; |
|
|
627 |
|
|
628 #define DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA(t, n) \ |
|
3301
|
629 volatile int t::t_id (-1); \ |
|
3219
|
630 const string t::t_name (n) |
|
|
631 |
|
2376
|
632 // If TRUE, allow assignments like |
|
|
633 // |
|
|
634 // octave> A(1) = 3; A(2) = 5 |
|
|
635 // |
|
|
636 // for A already defined and a matrix type. |
|
|
637 extern bool Vdo_fortran_indexing; |
|
|
638 |
|
|
639 // Should we allow things like: |
|
|
640 // |
|
|
641 // octave> 'abc' + 0 |
|
|
642 // 97 98 99 |
|
|
643 // |
|
|
644 // to happen? A positive value means yes. A negative value means |
|
|
645 // yes, but print a warning message. Zero means it should be |
|
|
646 // considered an error. |
|
|
647 extern int Vimplicit_str_to_num_ok; |
|
|
648 |
|
|
649 // Should we allow silent conversion of complex to real when a real |
|
|
650 // type is what we're really looking for? A positive value means yes. |
|
|
651 // A negative value means yes, but print a warning message. Zero |
|
|
652 // means it should be considered an error. |
|
|
653 extern int Vok_to_lose_imaginary_part; |
|
|
654 |
|
|
655 // If TRUE, create column vectors when doing assignments like: |
|
|
656 // |
|
|
657 // octave> A(1) = 3; A(2) = 5 |
|
|
658 // |
|
|
659 // (for A undefined). Only matters when resize_on_range_error is also |
|
|
660 // TRUE. |
|
|
661 extern bool Vprefer_column_vectors; |
|
|
662 |
|
|
663 // If TRUE, print the name along with the value. |
|
|
664 extern bool Vprint_answer_id_name; |
|
|
665 |
|
|
666 // Should operations on empty matrices return empty matrices or an |
|
|
667 // error? A positive value means yes. A negative value means yes, |
|
|
668 // but print a warning message. Zero means it should be considered an |
|
|
669 // error. |
|
|
670 extern int Vpropagate_empty_matrices; |
|
|
671 |
|
|
672 // How many levels of structure elements should we print? |
|
|
673 extern int Vstruct_levels_to_print; |
|
|
674 |
|
|
675 // Allow divide by zero errors to be suppressed. |
|
|
676 extern bool Vwarn_divide_by_zero; |
|
|
677 |
|
3195
|
678 // If TRUE, resize matrices when performing and indexed assignment and |
|
|
679 // the indices are outside the current bounds. |
|
|
680 extern bool Vresize_on_range_error; |
|
|
681 |
|
2376
|
682 // Indentation level for structures. |
|
|
683 extern int struct_indent; |
|
|
684 |
|
|
685 extern void increment_struct_indent (void); |
|
|
686 extern void decrement_struct_indent (void); |
|
|
687 |
|
2880
|
688 // Indentation level for lists. |
|
|
689 extern int list_indent; |
|
|
690 |
|
|
691 extern void increment_list_indent (void); |
|
|
692 extern void decrement_list_indent (void); |
|
|
693 |
|
2376
|
694 extern void install_types (void); |
|
|
695 |
|
|
696 #endif |
|
|
697 |
|
|
698 /* |
|
|
699 ;; Local Variables: *** |
|
|
700 ;; mode: C++ *** |
|
|
701 ;; End: *** |
|
|
702 */ |
