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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 (__GNUG__) && defined (USE_PRAGMA_INTERFACE_IMPLEMENTATION) |
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24 #pragma implementation |
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25 #endif |
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26 |
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27 #ifdef HAVE_CONFIG_H |
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28 #include <config.h> |
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29 #endif |
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30 |
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31 #include <iostream> |
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32 |
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33 #include "lo-ieee.h" |
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34 #include "lo-utils.h" |
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35 |
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36 #include "gripes.h" |
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37 #include "ops.h" |
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38 #include "oct-obj.h" |
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39 #include "ov-range.h" |
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40 #include "ov-re-mat.h" |
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41 #include "ov-scalar.h" |
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42 #include "pr-output.h" |
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43 |
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44 #include "byte-swap.h" |
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45 #include "ls-hdf5.h" |
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46 #include "ls-utils.h" |
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47 |
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3219
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48 DEFINE_OCTAVE_ALLOCATOR (octave_range); |
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49 |
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4612
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50 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_range, "range", "double"); |
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51 |
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52 static octave_value * |
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53 default_numeric_conversion_function (const octave_value& a) |
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54 { |
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55 CAST_CONV_ARG (const octave_range&); |
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56 |
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57 return new octave_matrix (v.matrix_value ()); |
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58 } |
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59 |
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60 type_conv_fcn |
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61 octave_range::numeric_conversion_function (void) const |
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62 { |
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63 return default_numeric_conversion_function; |
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64 } |
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65 |
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66 octave_value * |
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67 octave_range::try_narrowing_conversion (void) |
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68 { |
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69 octave_value *retval = 0; |
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70 |
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71 switch (range.nelem ()) |
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72 { |
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73 case 1: |
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74 retval = new octave_scalar (range.base ()); |
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75 break; |
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76 |
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77 case 0: |
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78 retval = new octave_matrix (Matrix (1, 0)); |
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79 break; |
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80 |
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81 default: |
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82 break; |
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83 } |
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84 |
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85 return retval; |
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86 } |
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87 |
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88 octave_value |
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89 octave_range::subsref (const std::string& type, |
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90 const std::list<octave_value_list>& idx) |
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91 { |
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92 octave_value retval; |
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93 |
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94 switch (type[0]) |
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95 { |
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96 case '(': |
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97 retval = do_index_op (idx.front ()); |
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98 break; |
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99 |
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100 case '{': |
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101 case '.': |
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102 { |
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103 std::string nm = type_name (); |
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104 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
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105 } |
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106 break; |
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107 |
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108 default: |
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109 panic_impossible (); |
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110 } |
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111 |
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112 return retval.next_subsref (type, idx); |
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113 } |
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114 |
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115 octave_value |
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116 octave_range::do_index_op (const octave_value_list& idx, int resize_ok) |
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117 { |
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118 // XXX FIXME XXX -- this doesn't solve the problem of |
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119 // |
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120 // a = 1:5; a(1, 1, 1) |
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121 // |
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122 // and similar constructions. Hmm... |
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123 |
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124 // XXX FIXME XXX -- using this constructor avoids possibly narrowing |
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125 // the range to a scalar value. Need a better solution to this |
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126 // problem. |
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127 |
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128 octave_value tmp (new octave_matrix (range.matrix_value ())); |
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129 |
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130 return tmp.do_index_op (idx, resize_ok); |
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131 } |
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132 |
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133 double |
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134 octave_range::double_value (bool) const |
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135 { |
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136 double retval = lo_ieee_nan_value (); |
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137 |
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138 int nel = range.nelem (); |
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139 |
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140 if (nel > 0) |
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141 { |
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142 // XXX FIXME XXX -- is warn_fortran_indexing the right variable here? |
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143 if (Vwarn_fortran_indexing) |
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144 gripe_implicit_conversion ("range", "real scalar"); |
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145 |
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146 retval = range.base (); |
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147 } |
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148 else |
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149 gripe_invalid_conversion ("range", "real scalar"); |
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150 |
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151 return retval; |
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152 } |
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153 |
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154 octave_value |
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155 octave_range::all (int dim) const |
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156 { |
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157 // XXX FIXME XXX -- this is a potential waste of memory. |
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158 |
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159 Matrix m = range.matrix_value (); |
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160 |
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161 return m.all (dim); |
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162 } |
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163 |
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164 octave_value |
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165 octave_range::any (int dim) const |
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166 { |
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167 // XXX FIXME XXX -- this is a potential waste of memory. |
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168 |
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169 Matrix m = range.matrix_value (); |
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170 |
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171 return m.any (dim); |
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172 } |
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173 |
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174 bool |
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175 octave_range::is_true (void) const |
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176 { |
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177 bool retval = false; |
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178 |
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179 if (range.nelem () != 0) |
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180 { |
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181 // XXX FIXME XXX -- this is a potential waste of memory. |
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182 |
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183 Matrix m ((range.matrix_value () . all ()) . all ()); |
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184 |
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185 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); |
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186 } |
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187 |
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188 return retval; |
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189 } |
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190 |
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191 Complex |
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192 octave_range::complex_value (bool) const |
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193 { |
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194 double tmp = lo_ieee_nan_value (); |
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195 |
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196 Complex retval (tmp, tmp); |
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197 |
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198 int nel = range.nelem (); |
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199 |
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200 if (nel > 0) |
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201 { |
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202 // XXX FIXME XXX -- is warn_fortran_indexing the right variable here? |
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203 if (Vwarn_fortran_indexing) |
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204 gripe_implicit_conversion ("range", "complex scalar"); |
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205 |
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206 retval = range.base (); |
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207 } |
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208 else |
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209 gripe_invalid_conversion ("range", "complex scalar"); |
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210 |
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211 return retval; |
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212 } |
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213 |
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214 octave_value |
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215 octave_range::convert_to_str_internal (bool pad, bool force) const |
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216 { |
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217 octave_value tmp (range.matrix_value ()); |
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218 return tmp.convert_to_str (pad, force); |
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219 } |
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220 |
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221 void |
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222 octave_range::print (std::ostream& os, bool pr_as_read_syntax) const |
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223 { |
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224 print_raw (os, pr_as_read_syntax); |
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225 newline (os); |
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226 } |
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227 |
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228 void |
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229 octave_range::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
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230 { |
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231 octave_print_internal (os, range, pr_as_read_syntax, |
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232 current_print_indent_level ()); |
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233 } |
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234 |
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235 bool |
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236 octave_range::print_name_tag (std::ostream& os, const std::string& name) const |
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237 { |
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238 bool retval = false; |
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239 |
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240 int n = range.nelem (); |
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241 |
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242 indent (os); |
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243 |
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244 if (n == 0 || n == 1) |
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245 os << name << " = "; |
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246 else |
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247 { |
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248 os << name << " ="; |
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249 newline (os); |
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250 newline (os); |
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251 retval = true; |
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252 } |
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253 |
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254 return retval; |
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255 } |
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256 |
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257 // Skip white space and comments on stream IS. |
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258 |
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259 static void |
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260 skip_comments (std::istream& is) |
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261 { |
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262 char c = '\0'; |
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263 while (is.get (c)) |
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264 { |
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265 if (c == ' ' || c == '\t' || c == '\n') |
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266 ; // Skip whitespace on way to beginning of next line. |
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267 else |
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268 break; |
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269 } |
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270 |
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271 for (;;) |
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272 { |
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273 if (is && (c == '%' || c == '#')) |
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274 while (is.get (c) && c != '\n') |
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275 ; // Skip to beginning of next line, ignoring everything. |
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276 else |
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277 break; |
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278 } |
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279 } |
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280 |
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281 bool |
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282 octave_range::save_ascii (std::ostream& os, bool& /* infnan_warned */, |
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283 bool /* strip_nan_and_inf */) |
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284 { |
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285 Range r = range_value (); |
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286 double base = r.base (); |
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287 double limit = r.limit (); |
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288 double inc = r.inc (); |
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289 |
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290 os << "# base, limit, increment\n"; |
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291 octave_write_double (os, base); |
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292 os << " "; |
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293 octave_write_double (os, limit); |
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294 os << " "; |
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295 octave_write_double (os, inc); |
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296 os << "\n"; |
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297 |
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298 return true; |
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299 } |
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300 |
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301 bool |
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302 octave_range::load_ascii (std::istream& is) |
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303 { |
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304 // # base, limit, range comment added by save (). |
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305 skip_comments (is); |
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306 |
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307 is >> range; |
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308 |
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309 if (!is) |
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310 { |
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311 error ("load: failed to load range constant"); |
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312 return false; |
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313 } |
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314 |
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315 return true; |
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316 } |
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317 |
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318 bool |
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319 octave_range::save_binary (std::ostream& os, bool& /* save_as_floats */) |
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320 { |
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321 char tmp = (char) LS_DOUBLE; |
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322 os.write (X_CAST (char *, &tmp), 1); |
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323 Range r = range_value (); |
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324 double bas = r.base (); |
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325 double lim = r.limit (); |
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326 double inc = r.inc (); |
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327 os.write (X_CAST (char *, &bas), 8); |
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328 os.write (X_CAST (char *, &lim), 8); |
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329 os.write (X_CAST (char *, &inc), 8); |
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330 |
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331 return true; |
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332 } |
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333 |
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334 bool |
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335 octave_range::load_binary (std::istream& is, bool swap, |
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336 oct_mach_info::float_format /* fmt */) |
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337 { |
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338 char tmp; |
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339 if (! is.read (X_CAST (char *, &tmp), 1)) |
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340 return false; |
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341 double bas, lim, inc; |
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342 if (! is.read (X_CAST (char *, &bas), 8)) |
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343 return false; |
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344 if (swap) |
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345 swap_8_bytes (X_CAST (char *, &bas)); |
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346 if (! is.read (X_CAST (char *, &lim), 8)) |
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347 return false; |
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348 if (swap) |
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349 swap_8_bytes (X_CAST (char *, &lim)); |
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350 if (! is.read (X_CAST (char *, &inc), 8)) |
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351 return false; |
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352 if (swap) |
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353 swap_8_bytes (X_CAST (char *, &inc)); |
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354 Range r (bas, lim, inc); |
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355 range = r; |
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356 return true; |
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357 } |
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358 |
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359 #if defined (HAVE_HDF5) |
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360 // The following subroutines creates an HDF5 representation of the way |
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361 // we will store Octave range types (triplets of floating-point numbers). |
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362 // NUM_TYPE is the HDF5 numeric type to use for storage (e.g. |
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363 // H5T_NATIVE_DOUBLE to save as 'double'). Note that any necessary |
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364 // conversions are handled automatically by HDF5. |
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365 |
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366 static hid_t |
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367 hdf5_make_range_type (hid_t num_type) |
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368 { |
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369 hid_t type_id = H5Tcreate (H5T_COMPOUND, sizeof (double) * 3); |
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370 |
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371 H5Tinsert (type_id, "base", 0 * sizeof (double), num_type); |
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372 H5Tinsert (type_id, "limit", 1 * sizeof (double), num_type); |
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373 H5Tinsert (type_id, "increment", 2 * sizeof (double), num_type); |
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374 |
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375 return type_id; |
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376 } |
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377 |
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378 bool |
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379 octave_range::save_hdf5 (hid_t loc_id, const char *name, |
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380 bool /* save_as_floats */) |
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381 { |
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382 hsize_t dims[3]; |
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383 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
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384 bool retval = true; |
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385 |
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386 space_hid = H5Screate_simple (0, dims, (hsize_t*) 0); |
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387 if (space_hid < 0) return false; |
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388 |
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389 type_hid = hdf5_make_range_type (H5T_NATIVE_DOUBLE); |
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390 if (type_hid < 0) |
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391 { |
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392 H5Sclose (space_hid); |
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393 return false; |
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394 } |
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395 |
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396 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); |
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397 if (data_hid < 0) |
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398 { |
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399 H5Sclose (space_hid); |
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400 H5Tclose (type_hid); |
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401 return false; |
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402 } |
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403 |
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404 Range r = range_value (); |
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405 double range_vals[3]; |
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406 range_vals[0] = r.base (); |
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407 range_vals[1] = r.limit (); |
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408 range_vals[2] = r.inc (); |
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409 |
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410 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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411 (void*) range_vals) >= 0; |
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412 |
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413 H5Dclose (data_hid); |
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414 H5Tclose (type_hid); |
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415 H5Sclose (space_hid); |
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416 return retval; |
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417 } |
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418 |
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419 bool |
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420 octave_range::load_hdf5 (hid_t loc_id, const char *name, |
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421 bool /* have_h5giterate_bug */) |
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422 { |
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423 bool retval = false; |
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424 hid_t data_hid = H5Dopen (loc_id, name); |
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425 hid_t type_hid = H5Dget_type (data_hid); |
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426 |
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427 hid_t range_type = hdf5_make_range_type (H5T_NATIVE_DOUBLE); |
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428 |
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429 if (! hdf5_types_compatible (type_hid, range_type)) |
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430 { |
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431 H5Tclose(range_type); |
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432 H5Dclose (data_hid); |
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433 return false; |
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434 } |
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435 |
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436 hid_t space_hid = H5Dget_space (data_hid); |
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437 hsize_t rank = H5Sget_simple_extent_ndims (space_hid); |
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438 |
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439 if (rank != 0) |
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440 { |
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441 H5Tclose(range_type); |
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442 H5Sclose (space_hid); |
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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 double rangevals[3]; |
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448 if (H5Dread (data_hid, range_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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449 (void *) rangevals) >= 0) |
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450 { |
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451 retval = true; |
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452 Range r (rangevals[0], rangevals[1], rangevals[2]); |
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453 range = r; |
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454 } |
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455 |
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456 H5Tclose(range_type); |
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457 H5Sclose (space_hid); |
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458 H5Dclose (data_hid); |
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459 return retval; |
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460 |
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461 } |
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462 #endif |
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463 |
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2376
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464 /* |
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465 ;;; Local Variables: *** |
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466 ;;; mode: C++ *** |
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467 ;;; End: *** |
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468 */ |
