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1 /* |
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2 |
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3 Copyright (C) 1996 John W. Eaton |
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4 |
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5 This file is part of Octave. |
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6 |
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7 Octave is free software; you can redistribute it and/or modify it |
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8 under the terms of the GNU General Public License as published by the |
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9 Free Software Foundation; either version 2, or (at your option) any |
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10 later version. |
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11 |
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12 Octave is distributed in the hope that it will be useful, but WITHOUT |
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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15 for more details. |
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16 |
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17 You should have received a copy of the GNU General Public License |
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18 along with Octave; see the file COPYING. If not, write to the Free |
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19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. |
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20 |
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21 */ |
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22 |
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23 #include <octave/config.h> |
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24 |
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25 #include <cstdlib> |
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26 |
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27 #include <string> |
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28 |
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29 class ostream; |
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30 |
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31 #include <octave/lo-mappers.h> |
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32 #include <octave/lo-utils.h> |
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33 #include <octave/mx-base.h> |
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34 #include <octave/str-vec.h> |
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35 |
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36 #include <octave/defun-dld.h> |
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37 #include <octave/error.h> |
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38 #include <octave/gripes.h> |
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39 #include <octave/oct-obj.h> |
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40 #include <octave/ops.h> |
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41 #include <octave/ov-base.h> |
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42 #include <octave/ov-typeinfo.h> |
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43 #include <octave/ov.h> |
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44 #include <octave/ov-scalar.h> |
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45 #include <octave/pager.h> |
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46 #include <octave/pr-output.h> |
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47 #include <octave/symtab.h> |
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48 #include <octave/variables.h> |
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49 |
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50 class Octave_map; |
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51 class octave_value_list; |
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52 |
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53 class tree_walker; |
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54 |
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55 // Integer values. |
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56 |
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57 class |
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58 octave_integer : public octave_base_value |
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59 { |
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60 public: |
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61 |
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62 octave_integer (void) |
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63 : octave_base_value (), scalar (0) { } |
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64 |
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65 octave_integer (int i) |
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66 : octave_base_value (), scalar (i) { } |
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67 |
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68 octave_integer (const octave_integer& s) |
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69 : octave_base_value (), scalar (s.scalar) { } |
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70 |
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71 ~octave_integer (void) { } |
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72 |
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73 octave_value *clone (void) { return new octave_integer (*this); } |
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74 |
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75 #if 0 |
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76 void *operator new (size_t size); |
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77 void operator delete (void *p, size_t size); |
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78 #endif |
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79 |
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80 idx_vector index_vector (void) const { return idx_vector ((double) scalar); } |
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81 |
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82 int rows (void) const { return 1; } |
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83 int columns (void) const { return 1; } |
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84 |
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85 bool is_defined (void) const { return true; } |
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86 bool is_real_scalar (void) const { return true; } |
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87 |
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88 octave_value all (void) const { return (double) (scalar != 0); } |
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89 octave_value any (void) const { return (double) (scalar != 0); } |
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90 |
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91 bool is_real_type (void) const { return true; } |
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92 bool is_scalar_type (void) const { return true; } |
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93 bool is_numeric_type (void) const { return true; } |
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94 |
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95 bool valid_as_scalar_index (void) const |
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96 { return scalar == 1; } |
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97 |
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98 bool valid_as_zero_index (void) const |
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99 { return scalar == 0; } |
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100 |
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101 bool is_true (void) const { return (scalar != 0); } |
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102 |
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103 double double_value (bool = false) const { return (double) scalar; } |
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104 |
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105 int integer_value (bool = false) const { return scalar; } |
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106 |
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107 Matrix matrix_value (bool = false) const { return Matrix (1, 1, scalar); } |
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108 |
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109 Complex complex_value (bool = false) const { return scalar; } |
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110 |
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111 ComplexMatrix complex_matrix_value (bool = false) const |
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112 { return ComplexMatrix (1, 1, Complex (scalar)); } |
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113 |
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114 octave_value not (void) const { return octave_value ((double) ! scalar); } |
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115 |
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116 octave_value uminus (void) const { return new octave_integer (- scalar); } |
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117 |
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118 octave_value transpose (void) const { return new octave_integer (scalar); } |
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119 |
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120 octave_value hermitian (void) const { return new octave_integer (scalar); } |
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121 |
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122 void increment (void) { ++scalar; } |
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123 |
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124 void decrement (void) { --scalar; } |
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125 |
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126 void print (ostream& os, bool pr_as_read_syntax = false) const; |
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127 |
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128 private: |
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129 |
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130 int scalar; |
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131 |
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132 DECLARE_OCTAVE_ALLOCATOR |
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133 |
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134 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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135 }; |
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136 |
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137 void |
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138 octave_integer::print (ostream& os, bool pr_as_read_syntax) const |
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139 { |
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140 octave_print_internal (os, scalar, pr_as_read_syntax); |
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141 } |
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142 |
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143 #ifdef DEFBINOP_OP |
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144 #undef DEFBINOP_OP |
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145 #endif |
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146 |
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147 #define DEFBINOP_OP(name, t1, t2, op) \ |
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148 BINOPDECL (name, a1, a2) \ |
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149 { \ |
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150 CAST_BINOP_ARGS (const octave_ ## t1&, const octave_ ## t2&); \ |
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151 return octave_value \ |
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152 (new octave_integer (v1.t1 ## _value () op v2.t2 ## _value ())); \ |
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153 } |
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154 |
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155 // integer by integer ops. |
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156 |
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157 DEFBINOP_OP (add, integer, integer, +) |
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158 DEFBINOP_OP (sub, integer, integer, -) |
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159 DEFBINOP_OP (mul, integer, integer, *) |
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160 |
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161 DEFBINOP (div, integer, integer) |
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162 { |
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163 CAST_BINOP_ARGS (const octave_integer&, const octave_integer&); |
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164 |
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165 int d = v2.integer_value (); |
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166 |
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167 if (d == 0) |
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168 gripe_divide_by_zero (); |
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169 |
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170 return new octave_integer (v1.integer_value () / d); |
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171 } |
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172 |
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173 |
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174 DEFBINOP (i_s_div, integer, scalar) |
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175 { |
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176 CAST_BINOP_ARGS (const octave_integer&, const octave_scalar&); |
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177 |
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178 double d = v2.double_value (); |
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179 |
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180 if (d == 0.0) |
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181 gripe_divide_by_zero (); |
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182 |
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183 return new octave_scalar (v1.double_value () / d); |
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184 } |
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185 |
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186 DEFBINOP (ldiv, integer, integer) |
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187 { |
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188 CAST_BINOP_ARGS (const octave_integer&, const octave_integer&); |
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189 |
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190 int d = v1.integer_value (); |
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191 |
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192 if (d == 0) |
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193 gripe_divide_by_zero (); |
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194 |
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195 return new octave_integer (v2.integer_value () / d); |
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196 } |
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197 |
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198 DEFBINOP_OP (lt, integer, integer, <) |
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199 DEFBINOP_OP (le, integer, integer, <=) |
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200 DEFBINOP_OP (eq, integer, integer, ==) |
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201 DEFBINOP_OP (ge, integer, integer, >=) |
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202 DEFBINOP_OP (gt, integer, integer, >) |
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203 DEFBINOP_OP (ne, integer, integer, !=) |
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204 |
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205 DEFBINOP_OP (el_mul, integer, integer, !=) |
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206 |
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207 DEFBINOP (el_div, integer, integer) |
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208 { |
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209 CAST_BINOP_ARGS (const octave_integer&, const octave_integer&); |
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210 |
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211 int d = v2.integer_value (); |
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212 |
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213 if (d == 0) |
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214 gripe_divide_by_zero (); |
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215 |
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216 return new octave_integer (v1.integer_value () / d); |
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217 } |
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218 |
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219 DEFBINOP (el_ldiv, integer, integer) |
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220 { |
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221 CAST_BINOP_ARGS (const octave_integer&, const octave_integer&); |
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222 |
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223 int d = v1.integer_value (); |
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224 |
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225 if (d == 0) |
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226 gripe_divide_by_zero (); |
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227 |
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228 return new octave_integer (v2.integer_value () / d); |
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229 } |
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230 |
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231 DEFBINOP_OP (el_and, integer, integer, &&) |
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232 DEFBINOP_OP (el_or, integer, integer, ||) |
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233 |
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234 DEFUN_DLD (make_int, args, , |
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235 "int_val = make_int (val)\n\ |
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236 \n\ |
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237 Creates an integer variable from VAL.") |
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238 { |
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239 static bool type_loaded = false; |
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240 |
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241 if (! type_loaded) |
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242 { |
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243 octave_integer::register_type (); |
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244 |
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245 cerr << "installing integer type at type-id = " |
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246 << octave_integer::static_type_id () << "\n"; |
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247 |
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248 INSTALL_BINOP (add, octave_integer, octave_integer, add); |
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249 INSTALL_BINOP (sub, octave_integer, octave_integer, sub); |
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250 INSTALL_BINOP (mul, octave_integer, octave_integer, mul); |
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251 INSTALL_BINOP (div, octave_integer, octave_integer, div); |
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252 INSTALL_BINOP (ldiv, octave_integer, octave_integer, ldiv); |
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253 INSTALL_BINOP (lt, octave_integer, octave_integer, lt); |
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254 INSTALL_BINOP (le, octave_integer, octave_integer, le); |
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255 INSTALL_BINOP (eq, octave_integer, octave_integer, eq); |
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256 INSTALL_BINOP (ge, octave_integer, octave_integer, ge); |
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257 INSTALL_BINOP (gt, octave_integer, octave_integer, gt); |
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258 INSTALL_BINOP (ne, octave_integer, octave_integer, ne); |
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259 INSTALL_BINOP (el_mul, octave_integer, octave_integer, el_mul); |
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260 INSTALL_BINOP (el_div, octave_integer, octave_integer, el_div); |
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261 INSTALL_BINOP (el_ldiv, octave_integer, octave_integer, el_ldiv); |
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262 INSTALL_BINOP (el_and, octave_integer, octave_integer, el_and); |
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263 INSTALL_BINOP (el_or, octave_integer, octave_integer, el_or); |
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264 |
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265 INSTALL_BINOP (div, octave_integer, octave_scalar, i_s_div); |
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266 } |
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267 |
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268 octave_value retval; |
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269 |
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270 if (args.length () == 1) |
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271 { |
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272 double d = args(0).double_value (); |
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273 |
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274 if (! error_state) |
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275 retval = octave_value (new octave_integer (NINT (d))); |
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276 } |
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277 else |
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278 usage ("make_int"); |
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279 |
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280 return retval; |
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281 } |
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282 |
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283 DEFUN_DLD (doit, args, , |
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284 "doit (I)") |
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285 { |
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286 octave_value_list retval; |
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287 |
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288 // Might be better to use |
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289 // |
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290 // args(0).type_name () == octave_integer::static_type_id () |
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291 // |
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292 // But there are some problems with doing that if this function is |
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293 // in the same shared library as the one that defines the class. |
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294 // In that case, at least some systems will create two static data |
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295 // members for t_id. To fix that problem, we need a different way |
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296 // of loading multiple functions from a single shared library... |
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297 |
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298 if (args(0).type_name () == "integer") |
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299 { |
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300 // At this point, we know we have a handle for an octave_integer |
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301 // object, so we can peek at the representation and extract the |
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302 // data. |
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303 |
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304 const octave_value& rep = args(0).get_rep (); |
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305 |
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306 int my_value = ((const octave_integer&) rep) . integer_value (); |
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307 |
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308 message ("doit", "your lucky number is: %d", my_value); |
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309 } |
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310 else |
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311 gripe_wrong_type_arg ("doit", args(0)); |
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312 |
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313 return retval; |
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314 } |
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315 |
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316 DEFINE_OCTAVE_ALLOCATOR (octave_integer); |
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317 |
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318 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_integer, "integer"); |
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319 |
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320 /* |
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321 ;;; Local Variables: *** |
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322 ;;; mode: C++ *** |
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323 ;;; End: *** |
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324 */ |
