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1 /* |
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2 |
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2847
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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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
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20 02110-1301, USA. |
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21 |
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22 */ |
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23 |
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24 #ifdef HAVE_CONFIG_H |
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25 #include <config.h> |
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26 #endif |
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27 |
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3503
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28 #include <iostream> |
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2901
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29 |
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2376
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30 #include "lo-ieee.h" |
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31 #include "lo-utils.h" |
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32 |
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33 #include "gripes.h" |
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34 #include "ops.h" |
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3933
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35 #include "oct-obj.h" |
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2376
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36 #include "ov-range.h" |
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37 #include "ov-re-mat.h" |
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2410
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38 #include "ov-scalar.h" |
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39 #include "pr-output.h" |
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40 |
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4687
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41 #include "byte-swap.h" |
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42 #include "ls-hdf5.h" |
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43 #include "ls-utils.h" |
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44 |
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3219
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45 DEFINE_OCTAVE_ALLOCATOR (octave_range); |
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46 |
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4612
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47 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_range, "range", "double"); |
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48 |
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5759
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49 static octave_base_value * |
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50 default_numeric_conversion_function (const octave_base_value& a) |
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51 { |
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52 CAST_CONV_ARG (const octave_range&); |
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53 |
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54 return new octave_matrix (v.matrix_value ()); |
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55 } |
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56 |
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57 octave_base_value::type_conv_fcn |
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58 octave_range::numeric_conversion_function (void) const |
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59 { |
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60 return default_numeric_conversion_function; |
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61 } |
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62 |
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63 octave_base_value * |
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2410
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64 octave_range::try_narrowing_conversion (void) |
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65 { |
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66 octave_base_value *retval = 0; |
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67 |
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68 switch (range.nelem ()) |
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69 { |
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70 case 1: |
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71 retval = new octave_scalar (range.base ()); |
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72 break; |
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73 |
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74 case 0: |
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4417
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75 retval = new octave_matrix (Matrix (1, 0)); |
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2410
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76 break; |
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77 |
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78 default: |
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79 break; |
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80 } |
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81 |
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82 return retval; |
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83 } |
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84 |
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2436
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85 octave_value |
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4247
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86 octave_range::subsref (const std::string& type, |
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87 const std::list<octave_value_list>& idx) |
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88 { |
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89 octave_value retval; |
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90 |
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91 switch (type[0]) |
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92 { |
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93 case '(': |
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94 retval = do_index_op (idx.front ()); |
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95 break; |
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96 |
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97 case '{': |
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98 case '.': |
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99 { |
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100 std::string nm = type_name (); |
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101 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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102 } |
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103 break; |
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104 |
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105 default: |
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106 panic_impossible (); |
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107 } |
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108 |
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109 return retval.next_subsref (type, idx); |
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110 } |
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111 |
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112 octave_value |
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113 octave_range::do_index_op (const octave_value_list& idx, int resize_ok) |
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114 { |
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5775
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115 // FIXME -- this doesn't solve the problem of |
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116 // |
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117 // a = 1:5; a(1, 1, 1) |
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118 // |
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119 // and similar constructions. Hmm... |
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120 |
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121 // FIXME -- using this constructor avoids possibly narrowing |
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122 // the range to a scalar value. Need a better solution to this |
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123 // problem. |
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124 |
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125 octave_value tmp (new octave_matrix (range.matrix_value ())); |
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126 |
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127 return tmp.do_index_op (idx, resize_ok); |
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128 } |
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129 |
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130 double |
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131 octave_range::double_value (bool) const |
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132 { |
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133 double retval = lo_ieee_nan_value (); |
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134 |
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5275
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135 octave_idx_type nel = range.nelem (); |
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136 |
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4455
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137 if (nel > 0) |
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138 { |
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139 // FIXME -- is warn_fortran_indexing the right variable here? |
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140 if (Vwarn_fortran_indexing) |
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141 gripe_implicit_conversion ("range", "real scalar"); |
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142 |
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143 retval = range.base (); |
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144 } |
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145 else |
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146 gripe_invalid_conversion ("range", "real scalar"); |
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147 |
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148 return retval; |
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149 } |
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150 |
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151 octave_value |
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4017
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152 octave_range::all (int dim) const |
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153 { |
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154 // FIXME -- this is a potential waste of memory. |
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155 |
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156 Matrix m = range.matrix_value (); |
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157 |
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4017
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158 return m.all (dim); |
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159 } |
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160 |
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161 octave_value |
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4017
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162 octave_range::any (int dim) const |
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163 { |
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164 // FIXME -- this is a potential waste of memory. |
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165 |
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166 Matrix m = range.matrix_value (); |
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167 |
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168 return m.any (dim); |
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169 } |
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170 |
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171 bool |
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172 octave_range::is_true (void) const |
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173 { |
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174 bool retval = false; |
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175 |
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176 if (range.nelem () != 0) |
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177 { |
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178 // FIXME -- this is a potential waste of memory. |
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179 |
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180 Matrix m ((range.matrix_value () . all ()) . all ()); |
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181 |
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182 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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183 } |
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184 |
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185 return retval; |
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186 } |
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187 |
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188 Complex |
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189 octave_range::complex_value (bool) const |
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190 { |
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4102
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191 double tmp = lo_ieee_nan_value (); |
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192 |
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193 Complex retval (tmp, tmp); |
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194 |
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195 octave_idx_type nel = range.nelem (); |
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196 |
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197 if (nel > 0) |
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198 { |
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199 // FIXME -- is warn_fortran_indexing the right variable here? |
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200 if (Vwarn_fortran_indexing) |
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201 gripe_implicit_conversion ("range", "complex scalar"); |
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202 |
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203 retval = range.base (); |
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204 } |
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205 else |
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206 gripe_invalid_conversion ("range", "complex scalar"); |
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207 |
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208 return retval; |
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209 } |
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210 |
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211 octave_value |
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212 octave_range::resize (const dim_vector& dv, bool fill) const |
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213 { |
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214 NDArray retval = array_value (); |
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215 if (fill) |
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216 retval.resize (dv, NDArray::resize_fill_value()); |
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217 else |
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218 retval.resize (dv); |
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219 return retval; |
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220 } |
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221 |
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222 octave_value |
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223 octave_range::convert_to_str_internal (bool pad, bool force, char type) const |
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2449
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224 { |
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225 octave_value tmp (range.matrix_value ()); |
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226 return tmp.convert_to_str (pad, force, type); |
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227 } |
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228 |
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229 void |
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3523
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230 octave_range::print (std::ostream& os, bool pr_as_read_syntax) const |
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231 { |
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232 print_raw (os, pr_as_read_syntax); |
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233 newline (os); |
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234 } |
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235 |
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236 void |
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3523
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237 octave_range::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
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238 { |
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239 octave_print_internal (os, range, pr_as_read_syntax, |
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240 current_print_indent_level ()); |
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241 } |
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242 |
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243 bool |
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3523
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244 octave_range::print_name_tag (std::ostream& os, const std::string& name) const |
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245 { |
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2901
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246 bool retval = false; |
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247 |
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5275
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248 octave_idx_type n = range.nelem (); |
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249 |
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250 indent (os); |
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251 |
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252 if (n == 0 || n == 1) |
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253 os << name << " = "; |
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254 else |
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255 { |
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256 os << name << " ="; |
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257 newline (os); |
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258 newline (os); |
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259 retval = true; |
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260 } |
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261 |
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262 return retval; |
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263 } |
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264 |
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4687
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265 // Skip white space and comments on stream IS. |
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266 |
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267 static void |
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268 skip_comments (std::istream& is) |
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269 { |
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270 char c = '\0'; |
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271 while (is.get (c)) |
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272 { |
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273 if (c == ' ' || c == '\t' || c == '\n') |
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274 ; // Skip whitespace on way to beginning of next line. |
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275 else |
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276 break; |
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277 } |
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278 |
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279 for (;;) |
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280 { |
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281 if (is && (c == '%' || c == '#')) |
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282 while (is.get (c) && c != '\n') |
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283 ; // Skip to beginning of next line, ignoring everything. |
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284 else |
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285 break; |
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286 } |
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287 } |
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288 |
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289 bool |
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290 octave_range::save_ascii (std::ostream& os, bool& /* infnan_warned */, |
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291 bool /* strip_nan_and_inf */) |
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292 { |
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293 Range r = range_value (); |
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294 double base = r.base (); |
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295 double limit = r.limit (); |
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296 double inc = r.inc (); |
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297 |
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298 os << "# base, limit, increment\n"; |
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299 octave_write_double (os, base); |
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300 os << " "; |
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301 octave_write_double (os, limit); |
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302 os << " "; |
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303 octave_write_double (os, inc); |
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304 os << "\n"; |
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305 |
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306 return true; |
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307 } |
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308 |
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309 bool |
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310 octave_range::load_ascii (std::istream& is) |
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311 { |
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312 // # base, limit, range comment added by save (). |
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313 skip_comments (is); |
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314 |
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315 is >> range; |
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316 |
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317 if (!is) |
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318 { |
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319 error ("load: failed to load range constant"); |
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320 return false; |
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321 } |
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322 |
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323 return true; |
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324 } |
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325 |
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326 bool |
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327 octave_range::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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328 { |
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5760
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329 char tmp = LS_DOUBLE; |
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330 os.write (reinterpret_cast<char *> (&tmp), 1); |
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4687
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331 Range r = range_value (); |
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332 double bas = r.base (); |
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333 double lim = r.limit (); |
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334 double inc = r.inc (); |
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5760
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335 os.write (reinterpret_cast<char *> (&bas), 8); |
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336 os.write (reinterpret_cast<char *> (&lim), 8); |
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337 os.write (reinterpret_cast<char *> (&inc), 8); |
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4687
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338 |
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339 return true; |
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340 } |
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341 |
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342 bool |
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343 octave_range::load_binary (std::istream& is, bool swap, |
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344 oct_mach_info::float_format /* fmt */) |
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345 { |
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346 char tmp; |
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5760
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347 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
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4687
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348 return false; |
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349 double bas, lim, inc; |
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5760
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350 if (! is.read (reinterpret_cast<char *> (&bas), 8)) |
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4687
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351 return false; |
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352 if (swap) |
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4944
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353 swap_bytes<8> (&bas); |
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5760
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354 if (! is.read (reinterpret_cast<char *> (&lim), 8)) |
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4687
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355 return false; |
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356 if (swap) |
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4944
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357 swap_bytes<8> (&lim); |
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5760
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358 if (! is.read (reinterpret_cast<char *> (&inc), 8)) |
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4687
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359 return false; |
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360 if (swap) |
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4944
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361 swap_bytes<8> (&inc); |
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4687
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362 Range r (bas, lim, inc); |
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363 range = r; |
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364 return true; |
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365 } |
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366 |
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367 #if defined (HAVE_HDF5) |
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4944
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368 |
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4687
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369 // The following subroutines creates an HDF5 representation of the way |
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370 // we will store Octave range types (triplets of floating-point numbers). |
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371 // NUM_TYPE is the HDF5 numeric type to use for storage (e.g. |
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372 // H5T_NATIVE_DOUBLE to save as 'double'). Note that any necessary |
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373 // conversions are handled automatically by HDF5. |
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374 |
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375 static hid_t |
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376 hdf5_make_range_type (hid_t num_type) |
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377 { |
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378 hid_t type_id = H5Tcreate (H5T_COMPOUND, sizeof (double) * 3); |
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379 |
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380 H5Tinsert (type_id, "base", 0 * sizeof (double), num_type); |
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381 H5Tinsert (type_id, "limit", 1 * sizeof (double), num_type); |
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382 H5Tinsert (type_id, "increment", 2 * sizeof (double), num_type); |
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383 |
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384 return type_id; |
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385 } |
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386 |
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387 bool |
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388 octave_range::save_hdf5 (hid_t loc_id, const char *name, |
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389 bool /* save_as_floats */) |
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390 { |
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4792
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391 hsize_t dimens[3]; |
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4687
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392 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
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393 bool retval = true; |
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394 |
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4815
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395 space_hid = H5Screate_simple (0, dimens, 0); |
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4687
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396 if (space_hid < 0) return false; |
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397 |
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398 type_hid = hdf5_make_range_type (H5T_NATIVE_DOUBLE); |
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399 if (type_hid < 0) |
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400 { |
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401 H5Sclose (space_hid); |
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402 return false; |
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403 } |
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404 |
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405 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); |
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406 if (data_hid < 0) |
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407 { |
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408 H5Sclose (space_hid); |
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409 H5Tclose (type_hid); |
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410 return false; |
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411 } |
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412 |
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413 Range r = range_value (); |
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414 double range_vals[3]; |
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415 range_vals[0] = r.base (); |
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416 range_vals[1] = r.limit (); |
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417 range_vals[2] = r.inc (); |
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418 |
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419 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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4815
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420 range_vals) >= 0; |
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4687
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421 |
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422 H5Dclose (data_hid); |
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423 H5Tclose (type_hid); |
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424 H5Sclose (space_hid); |
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4837
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425 |
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4687
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426 return retval; |
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427 } |
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428 |
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429 bool |
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430 octave_range::load_hdf5 (hid_t loc_id, const char *name, |
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431 bool /* have_h5giterate_bug */) |
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432 { |
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433 bool retval = false; |
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4837
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434 |
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4687
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435 hid_t data_hid = H5Dopen (loc_id, name); |
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436 hid_t type_hid = H5Dget_type (data_hid); |
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437 |
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438 hid_t range_type = hdf5_make_range_type (H5T_NATIVE_DOUBLE); |
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439 |
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440 if (! hdf5_types_compatible (type_hid, range_type)) |
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441 { |
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4837
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442 H5Tclose (range_type); |
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4687
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443 H5Dclose (data_hid); |
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444 return false; |
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445 } |
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446 |
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447 hid_t space_hid = H5Dget_space (data_hid); |
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448 hsize_t rank = H5Sget_simple_extent_ndims (space_hid); |
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449 |
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450 if (rank != 0) |
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451 { |
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4837
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452 H5Tclose (range_type); |
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4687
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453 H5Sclose (space_hid); |
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454 H5Dclose (data_hid); |
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455 return false; |
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456 } |
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457 |
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458 double rangevals[3]; |
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459 if (H5Dread (data_hid, range_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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4815
|
460 rangevals) >= 0) |
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4687
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461 { |
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462 retval = true; |
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463 Range r (rangevals[0], rangevals[1], rangevals[2]); |
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464 range = r; |
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465 } |
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|
466 |
|
4837
|
467 H5Tclose (range_type); |
|
4687
|
468 H5Sclose (space_hid); |
|
|
469 H5Dclose (data_hid); |
|
4837
|
470 |
|
4687
|
471 return retval; |
|
|
472 } |
|
4944
|
473 |
|
4687
|
474 #endif |
|
|
475 |
|
2376
|
476 /* |
|
|
477 ;;; Local Variables: *** |
|
|
478 ;;; mode: C++ *** |
|
|
479 ;;; End: *** |
|
|
480 */ |
