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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_scalar_h) |
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24 #define octave_scalar_h 1 |
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25 |
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26 #include <cstdlib> |
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27 |
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28 #include <iostream> |
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29 #include <string> |
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30 |
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31 #include "lo-ieee.h" |
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32 #include "lo-mappers.h" |
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33 #include "lo-utils.h" |
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34 #include "mx-base.h" |
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35 #include "oct-alloc.h" |
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36 #include "str-vec.h" |
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37 |
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38 #include "ov-base.h" |
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39 #include "ov-re-mat.h" |
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40 #include "ov-base-scalar.h" |
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41 #include "ov-typeinfo.h" |
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42 |
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43 class Octave_map; |
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44 class octave_value_list; |
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45 |
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46 class tree_walker; |
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47 |
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48 // Real scalar values. |
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49 |
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50 class |
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51 octave_scalar : public octave_base_scalar<double> |
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52 { |
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53 public: |
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54 |
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55 octave_scalar (void) |
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56 : octave_base_scalar<double> (0.0) { } |
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57 |
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58 octave_scalar (double d) |
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59 : octave_base_scalar<double> (d) { } |
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60 |
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61 octave_scalar (const octave_scalar& s) |
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62 : octave_base_scalar<double> (s) { } |
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63 |
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64 ~octave_scalar (void) { } |
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65 |
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66 octave_value *clone (void) const { return new octave_scalar (*this); } |
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67 |
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68 // We return an octave_matrix here instead of an octave_scalar so |
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69 // that in expressions like A(2,2,2) = 2 (for A previously |
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70 // undefined), A will be empty instead of a 1x1 object. |
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71 octave_value *empty_clone (void) const { return new octave_matrix (); } |
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72 |
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73 octave_value do_index_op (const octave_value_list& idx, int resize_ok); |
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74 |
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75 idx_vector index_vector (void) const { return idx_vector (scalar); } |
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76 |
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77 octave_value any (int = 0) const |
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78 { return (scalar != 0 && ! lo_ieee_isnan (scalar)); } |
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79 |
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80 bool is_real_scalar (void) const { return true; } |
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81 |
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82 bool is_real_type (void) const { return true; } |
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83 |
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84 bool valid_as_scalar_index (void) const |
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85 { |
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86 return (! xisnan (scalar) |
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87 && D_NINT (scalar) == scalar |
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88 && NINT (scalar) == 1); |
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89 } |
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90 |
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91 bool valid_as_zero_index (void) const |
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92 { |
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93 return (! xisnan (scalar) |
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94 && D_NINT (scalar) == scalar |
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95 && NINT (scalar) == 0); |
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96 } |
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97 |
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98 double double_value (bool = false) const { return scalar; } |
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99 |
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100 double scalar_value (bool = false) const { return scalar; } |
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101 |
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102 Matrix matrix_value (bool = false) const |
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103 { return Matrix (1, 1, scalar); } |
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104 |
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105 NDArray array_value (bool = false) const |
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106 { return NDArray (dim_vector (1, 1), scalar); } |
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107 |
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108 octave_value resize (const dim_vector& dv) const |
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109 { |
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110 NDArray retval (dv); |
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111 |
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112 if (dv.numel ()) |
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113 retval(0) = scalar; |
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114 |
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115 return retval; |
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116 } |
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117 |
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118 Complex complex_value (bool = false) const { return scalar; } |
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119 |
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120 ComplexMatrix complex_matrix_value (bool = false) const |
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121 { return ComplexMatrix (1, 1, Complex (scalar)); } |
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122 |
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123 ComplexNDArray complex_array_value (bool = false) const |
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124 { return ComplexNDArray (dim_vector (1, 1), Complex (scalar)); } |
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125 |
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126 std::streamoff streamoff_value (void) const; |
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127 |
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128 streamoff_array streamoff_array_value (void) const; |
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129 |
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130 octave_value convert_to_str_internal (bool pad, bool force) const; |
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131 |
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132 void increment (void) { ++scalar; } |
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133 |
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134 void decrement (void) { --scalar; } |
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135 |
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136 bool save_ascii (std::ostream& os, bool& infnan_warned, |
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137 bool strip_nan_and_inf); |
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138 |
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139 bool load_ascii (std::istream& is); |
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140 |
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141 bool save_binary (std::ostream& os, bool& save_as_floats); |
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142 |
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143 bool load_binary (std::istream& is, bool swap, |
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144 oct_mach_info::float_format fmt); |
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145 |
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146 #if defined (HAVE_HDF5) |
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147 bool save_hdf5 (hid_t loc_id, const char *name, bool save_as_floats); |
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148 |
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149 bool load_hdf5 (hid_t loc_id, const char *name, bool have_h5giterate_bug); |
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150 #endif |
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151 |
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152 int write (octave_stream& os, int block_size, |
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153 oct_data_conv::data_type output_type, int skip, |
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154 oct_mach_info::float_format flt_fmt) const |
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155 { |
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156 return os.write (array_value (), block_size, output_type, |
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157 skip, flt_fmt); |
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158 } |
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159 |
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160 private: |
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161 |
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162 DECLARE_OCTAVE_ALLOCATOR |
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163 |
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164 DECLARE_OV_TYPEID_FUNCTIONS_AND_DATA |
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165 }; |
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166 |
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167 #endif |
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168 |
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169 /* |
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170 ;;; Local Variables: *** |
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171 ;;; mode: C++ *** |
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172 ;;; End: *** |
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173 */ |
