Mercurial > hg > octave-lyh
annotate libinterp/octave-value/ov-range.cc @ 17402:b6867a09d7cf
Return correct status code for copyfile, movefile.
* scripts/miscellaneous/copyfile.m, scripts/miscellaneous/movefile.m:
Return correct status (inversion of system function). Put input validation
first. Use single quotes to simplify expressions. Redo docstrings.
| author | Rik <rik@octave.org> |
|---|---|
| date | Sun, 08 Sep 2013 21:11:45 -0700 |
| parents | bc924baa2c4e |
| children |
| rev | line source |
|---|---|
| 2376 | 1 /* |
| 2 | |
|
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3 Copyright (C) 1996-2012 John W. Eaton |
| 2376 | 4 |
| 5 This file is part of Octave. | |
| 6 | |
| 7 Octave is free software; you can redistribute it and/or modify it | |
| 8 under the terms of the GNU General Public License as published by the | |
| 7016 | 9 Free Software Foundation; either version 3 of the License, or (at your |
| 10 option) any later version. | |
| 2376 | 11 |
| 12 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 14 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 15 for more details. | |
| 16 | |
| 17 You should have received a copy of the GNU General Public License | |
| 7016 | 18 along with Octave; see the file COPYING. If not, see |
| 19 <http://www.gnu.org/licenses/>. | |
| 2376 | 20 |
| 21 */ | |
| 22 | |
| 23 #ifdef HAVE_CONFIG_H | |
| 24 #include <config.h> | |
| 25 #endif | |
| 26 | |
| 3503 | 27 #include <iostream> |
| 2901 | 28 |
| 2376 | 29 #include "lo-ieee.h" |
| 30 #include "lo-utils.h" | |
| 31 | |
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32 #include "defun.h" |
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33 #include "variables.h" |
| 2376 | 34 #include "gripes.h" |
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35 #include "mxarray.h" |
| 2376 | 36 #include "ops.h" |
| 3933 | 37 #include "oct-obj.h" |
| 2376 | 38 #include "ov-range.h" |
| 39 #include "ov-re-mat.h" | |
| 2410 | 40 #include "ov-scalar.h" |
| 2376 | 41 #include "pr-output.h" |
| 42 | |
| 4687 | 43 #include "byte-swap.h" |
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44 #include "ls-ascii-helper.h" |
| 4687 | 45 #include "ls-hdf5.h" |
| 46 #include "ls-utils.h" | |
| 47 | |
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48 // If TRUE, allow ranges with non-integer elements as array indices. |
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49 bool Vallow_noninteger_range_as_index = false; |
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50 |
| 3219 | 51 DEFINE_OCTAVE_ALLOCATOR (octave_range); |
| 2376 | 52 |
| 4612 | 53 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_range, "range", "double"); |
| 2376 | 54 |
| 5759 | 55 static octave_base_value * |
| 56 default_numeric_conversion_function (const octave_base_value& a) | |
| 2376 | 57 { |
| 58 CAST_CONV_ARG (const octave_range&); | |
| 59 | |
| 60 return new octave_matrix (v.matrix_value ()); | |
| 61 } | |
| 62 | |
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63 octave_base_value::type_conv_info |
| 2376 | 64 octave_range::numeric_conversion_function (void) const |
| 65 { | |
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66 return octave_base_value::type_conv_info (default_numeric_conversion_function, |
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67 octave_matrix::static_type_id ()); |
| 2376 | 68 } |
| 69 | |
| 5759 | 70 octave_base_value * |
| 2410 | 71 octave_range::try_narrowing_conversion (void) |
| 72 { | |
| 5759 | 73 octave_base_value *retval = 0; |
| 2410 | 74 |
| 75 switch (range.nelem ()) | |
| 76 { | |
| 77 case 1: | |
| 78 retval = new octave_scalar (range.base ()); | |
| 79 break; | |
| 80 | |
| 81 case 0: | |
| 4417 | 82 retval = new octave_matrix (Matrix (1, 0)); |
| 2410 | 83 break; |
| 84 | |
| 8971 | 85 case -2: |
| 86 retval = new octave_matrix (range.matrix_value ()); | |
| 87 break; | |
| 88 | |
| 2410 | 89 default: |
| 90 break; | |
| 91 } | |
| 92 | |
| 93 return retval; | |
| 94 } | |
| 95 | |
| 2436 | 96 octave_value |
| 4247 | 97 octave_range::subsref (const std::string& type, |
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98 const std::list<octave_value_list>& idx) |
| 3933 | 99 { |
| 100 octave_value retval; | |
| 101 | |
| 102 switch (type[0]) | |
| 103 { | |
| 104 case '(': | |
| 105 retval = do_index_op (idx.front ()); | |
| 106 break; | |
| 107 | |
| 108 case '{': | |
| 109 case '.': | |
| 110 { | |
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111 std::string nm = type_name (); |
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112 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); |
| 3933 | 113 } |
| 114 break; | |
| 115 | |
| 116 default: | |
| 117 panic_impossible (); | |
| 118 } | |
| 119 | |
| 120 return retval.next_subsref (type, idx); | |
| 121 } | |
| 122 | |
| 123 octave_value | |
| 5885 | 124 octave_range::do_index_op (const octave_value_list& idx, bool resize_ok) |
| 2436 | 125 { |
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126 if (idx.length () == 1 && ! resize_ok) |
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127 { |
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128 octave_value retval; |
| 2436 | 129 |
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130 // The range can handle a single subscript. |
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131 idx_vector i = idx(0).index_vector (); |
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132 if (! error_state) |
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133 { |
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134 if (i.is_scalar () && i(0) < range.nelem ()) |
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135 retval = range.elem (i(0)); |
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136 else |
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137 retval = range.index (i); |
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138 } |
| 2436 | 139 |
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140 return retval; |
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141 } |
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142 else |
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143 { |
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144 octave_value tmp (new octave_matrix (range.matrix_value ())); |
| 2436 | 145 |
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146 return tmp.do_index_op (idx, resize_ok); |
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147 } |
| 2436 | 148 } |
| 149 | |
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150 idx_vector |
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151 octave_range::index_vector (void) const |
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152 { |
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153 if (idx_cache) |
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154 return *idx_cache; |
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155 else |
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156 { |
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157 if (! Vallow_noninteger_range_as_index |
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158 || range.all_elements_are_ints ()) |
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159 return set_idx_cache (idx_vector (range)); |
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160 else |
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161 { |
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162 warning_with_id ("Octave:noninteger-range-as-index", |
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163 "non-integer range used as index"); |
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164 |
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165 return octave_value (matrix_value ()).round ().index_vector (); |
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166 } |
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167 } |
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168 } |
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169 |
| 2376 | 170 double |
| 171 octave_range::double_value (bool) const | |
| 172 { | |
| 4102 | 173 double retval = lo_ieee_nan_value (); |
| 2376 | 174 |
| 5275 | 175 octave_idx_type nel = range.nelem (); |
| 2376 | 176 |
| 4455 | 177 if (nel > 0) |
| 178 { | |
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179 gripe_implicit_conversion ("Octave:array-to-scalar", |
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180 "range", "real scalar"); |
| 4455 | 181 |
| 182 retval = range.base (); | |
| 183 } | |
| 2376 | 184 else |
| 185 gripe_invalid_conversion ("range", "real scalar"); | |
| 186 | |
| 187 return retval; | |
| 188 } | |
| 189 | |
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190 float |
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191 octave_range::float_value (bool) const |
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192 { |
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193 float retval = lo_ieee_float_nan_value (); |
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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 gripe_implicit_conversion ("Octave:array-to-scalar", |
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200 "range", "real scalar"); |
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201 |
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202 retval = range.base (); |
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203 } |
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204 else |
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205 gripe_invalid_conversion ("range", "real scalar"); |
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206 |
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207 return retval; |
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208 } |
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209 |
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210 charNDArray |
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211 octave_range::char_array_value (bool) const |
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212 { |
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213 const Matrix matrix = range.matrix_value (); |
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214 charNDArray retval (dims ()); |
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215 |
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216 octave_idx_type nel = numel (); |
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217 |
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218 for (octave_idx_type i = 0; i < nel; i++) |
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219 retval.elem (i) = static_cast<char>(matrix.elem (i)); |
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220 |
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221 return retval; |
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222 } |
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223 |
| 2376 | 224 octave_value |
| 4017 | 225 octave_range::all (int dim) const |
| 2376 | 226 { |
| 5775 | 227 // FIXME -- this is a potential waste of memory. |
| 2436 | 228 |
| 229 Matrix m = range.matrix_value (); | |
| 230 | |
| 4017 | 231 return m.all (dim); |
| 2376 | 232 } |
| 233 | |
| 234 octave_value | |
| 4017 | 235 octave_range::any (int dim) const |
| 2376 | 236 { |
| 5775 | 237 // FIXME -- this is a potential waste of memory. |
| 4017 | 238 |
| 239 Matrix m = range.matrix_value (); | |
| 240 | |
| 241 return m.any (dim); | |
| 2376 | 242 } |
| 243 | |
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244 octave_value |
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245 octave_range::diag (octave_idx_type k) const |
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246 { |
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247 return (k == 0 |
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248 ? octave_value (DiagMatrix (DiagArray2<double> (range.matrix_value ()))) |
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249 : octave_value (range.diag (k))); |
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250 } |
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251 |
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252 octave_value |
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253 octave_range::diag (octave_idx_type m, octave_idx_type n) const |
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254 { |
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255 Matrix mat = range.matrix_value (); |
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256 |
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257 return mat.diag (m, n); |
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258 } |
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259 |
| 2376 | 260 bool |
| 261 octave_range::is_true (void) const | |
| 262 { | |
| 263 bool retval = false; | |
| 2436 | 264 |
| 4478 | 265 if (range.nelem () != 0) |
| 2436 | 266 { |
| 5775 | 267 // FIXME -- this is a potential waste of memory. |
| 2436 | 268 |
| 269 Matrix m ((range.matrix_value () . all ()) . all ()); | |
| 270 | |
| 271 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); | |
| 272 } | |
| 273 | |
| 2376 | 274 return retval; |
| 275 } | |
| 276 | |
| 277 Complex | |
| 278 octave_range::complex_value (bool) const | |
| 279 { | |
| 4102 | 280 double tmp = lo_ieee_nan_value (); |
| 281 | |
| 282 Complex retval (tmp, tmp); | |
| 2376 | 283 |
| 5275 | 284 octave_idx_type nel = range.nelem (); |
| 2376 | 285 |
| 4455 | 286 if (nel > 0) |
| 287 { | |
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288 gripe_implicit_conversion ("Octave:array-to-scalar", |
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289 "range", "complex scalar"); |
| 4455 | 290 |
| 291 retval = range.base (); | |
| 292 } | |
| 2376 | 293 else |
| 294 gripe_invalid_conversion ("range", "complex scalar"); | |
| 295 | |
| 296 return retval; | |
| 297 } | |
| 298 | |
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299 FloatComplex |
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300 octave_range::float_complex_value (bool) const |
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301 { |
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302 float tmp = lo_ieee_float_nan_value (); |
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303 |
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304 FloatComplex retval (tmp, tmp); |
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305 |
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306 octave_idx_type nel = range.nelem (); |
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307 |
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308 if (nel > 0) |
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309 { |
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310 gripe_implicit_conversion ("Octave:array-to-scalar", |
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311 "range", "complex scalar"); |
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312 |
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313 retval = range.base (); |
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314 } |
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315 else |
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316 gripe_invalid_conversion ("range", "complex scalar"); |
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317 |
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318 return retval; |
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319 } |
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320 |
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321 boolNDArray |
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322 octave_range::bool_array_value (bool warn) const |
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323 { |
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324 Matrix m = range.matrix_value (); |
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325 |
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326 if (m.any_element_is_nan ()) |
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327 gripe_nan_to_logical_conversion (); |
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328 else if (warn && m.any_element_not_one_or_zero ()) |
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329 gripe_logical_conversion (); |
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330 |
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331 return boolNDArray (m); |
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332 } |
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333 |
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334 octave_value |
| 5731 | 335 octave_range::resize (const dim_vector& dv, bool fill) const |
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336 { |
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337 NDArray retval = array_value (); |
| 5731 | 338 if (fill) |
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339 retval.resize (dv, 0); |
| 5731 | 340 else |
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341 retval.resize (dv); |
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342 return retval; |
| 5731 | 343 } |
| 344 | |
| 2376 | 345 octave_value |
| 5279 | 346 octave_range::convert_to_str_internal (bool pad, bool force, char type) const |
| 2449 | 347 { |
| 348 octave_value tmp (range.matrix_value ()); | |
| 5279 | 349 return tmp.convert_to_str (pad, force, type); |
| 2449 | 350 } |
| 351 | |
| 2376 | 352 void |
| 3523 | 353 octave_range::print (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 354 { |
| 355 print_raw (os, pr_as_read_syntax); | |
| 356 newline (os); | |
| 357 } | |
| 358 | |
| 359 void | |
| 3523 | 360 octave_range::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 361 { |
| 362 octave_print_internal (os, range, pr_as_read_syntax, | |
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363 current_print_indent_level ()); |
| 2901 | 364 } |
| 365 | |
| 366 bool | |
| 3523 | 367 octave_range::print_name_tag (std::ostream& os, const std::string& name) const |
| 2376 | 368 { |
| 2901 | 369 bool retval = false; |
| 370 | |
| 5275 | 371 octave_idx_type n = range.nelem (); |
| 2901 | 372 |
| 373 indent (os); | |
| 374 | |
| 375 if (n == 0 || n == 1) | |
| 376 os << name << " = "; | |
| 377 else | |
| 378 { | |
| 379 os << name << " ="; | |
| 380 newline (os); | |
|
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381 if (! Vcompact_format) |
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382 newline (os); |
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383 |
| 2901 | 384 retval = true; |
| 385 } | |
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386 |
| 2901 | 387 return retval; |
| 2376 | 388 } |
| 389 | |
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390 std::string |
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391 octave_range::short_disp (void) const |
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392 { |
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393 std::ostringstream buf; |
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394 |
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395 octave_idx_type len = range.nelem (); |
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396 |
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397 if (len == 0) |
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398 buf << "[]"; |
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399 else |
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400 { |
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401 buf << range.base () << ":"; |
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402 |
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403 if (len > 1) |
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404 { |
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405 if (range.inc () != 1) |
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406 buf << range.inc () << ":"; |
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407 |
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408 buf << range.limit (); |
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409 } |
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410 } |
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411 |
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412 return buf.str (); |
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413 } |
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414 |
| 4687 | 415 // Skip white space and comments on stream IS. |
| 416 | |
| 417 static void | |
| 418 skip_comments (std::istream& is) | |
| 419 { | |
| 420 char c = '\0'; | |
| 421 while (is.get (c)) | |
| 422 { | |
| 423 if (c == ' ' || c == '\t' || c == '\n') | |
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424 ; // Skip whitespace on way to beginning of next line. |
| 4687 | 425 else |
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426 break; |
| 4687 | 427 } |
| 428 | |
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429 skip_until_newline (is, false); |
| 4687 | 430 } |
| 431 | |
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432 bool |
| 6974 | 433 octave_range::save_ascii (std::ostream& os) |
| 4687 | 434 { |
| 435 Range r = range_value (); | |
| 436 double base = r.base (); | |
| 437 double limit = r.limit (); | |
| 438 double inc = r.inc (); | |
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439 octave_idx_type len = r.nelem (); |
| 4687 | 440 |
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441 if (inc != 0) |
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442 os << "# base, limit, increment\n"; |
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443 else |
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444 os << "# base, length, increment\n"; |
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445 |
| 4687 | 446 octave_write_double (os, base); |
| 447 os << " "; | |
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448 if (inc != 0) |
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449 octave_write_double (os, limit); |
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450 else |
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451 os << len; |
| 4687 | 452 os << " "; |
| 453 octave_write_double (os, inc); | |
| 454 os << "\n"; | |
| 455 | |
| 456 return true; | |
| 457 } | |
| 458 | |
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459 bool |
| 4687 | 460 octave_range::load_ascii (std::istream& is) |
| 461 { | |
| 462 // # base, limit, range comment added by save (). | |
| 463 skip_comments (is); | |
| 464 | |
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465 double base, limit, inc; |
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466 is >> base >> limit >> inc; |
| 4687 | 467 |
| 468 if (!is) | |
| 469 { | |
| 470 error ("load: failed to load range constant"); | |
| 471 return false; | |
| 472 } | |
| 473 | |
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474 if (inc != 0) |
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475 range = Range (base, limit, inc); |
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476 else |
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477 range = Range (base, inc, static_cast<octave_idx_type> (limit)); |
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478 |
| 4687 | 479 return true; |
| 480 } | |
| 481 | |
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482 bool |
| 4687 | 483 octave_range::save_binary (std::ostream& os, bool& /* save_as_floats */) |
| 484 { | |
| 5760 | 485 char tmp = LS_DOUBLE; |
| 486 os.write (reinterpret_cast<char *> (&tmp), 1); | |
| 4687 | 487 Range r = range_value (); |
| 488 double bas = r.base (); | |
| 489 double lim = r.limit (); | |
| 490 double inc = r.inc (); | |
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491 if (inc == 0) |
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492 lim = r.nelem (); |
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493 |
| 5760 | 494 os.write (reinterpret_cast<char *> (&bas), 8); |
| 495 os.write (reinterpret_cast<char *> (&lim), 8); | |
| 496 os.write (reinterpret_cast<char *> (&inc), 8); | |
| 4687 | 497 |
| 498 return true; | |
| 499 } | |
| 500 | |
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501 bool |
| 4687 | 502 octave_range::load_binary (std::istream& is, bool swap, |
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503 oct_mach_info::float_format /* fmt */) |
| 4687 | 504 { |
| 505 char tmp; | |
| 5760 | 506 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
| 4687 | 507 return false; |
| 508 double bas, lim, inc; | |
| 5760 | 509 if (! is.read (reinterpret_cast<char *> (&bas), 8)) |
| 4687 | 510 return false; |
| 511 if (swap) | |
| 4944 | 512 swap_bytes<8> (&bas); |
| 5760 | 513 if (! is.read (reinterpret_cast<char *> (&lim), 8)) |
| 4687 | 514 return false; |
| 515 if (swap) | |
| 4944 | 516 swap_bytes<8> (&lim); |
| 5760 | 517 if (! is.read (reinterpret_cast<char *> (&inc), 8)) |
| 4687 | 518 return false; |
| 519 if (swap) | |
| 4944 | 520 swap_bytes<8> (&inc); |
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521 if (inc != 0) |
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522 range = Range (bas, lim, inc); |
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523 else |
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524 range = Range (bas, inc, static_cast<octave_idx_type> (lim)); |
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525 |
| 4687 | 526 return true; |
| 527 } | |
| 528 | |
| 529 #if defined (HAVE_HDF5) | |
| 4944 | 530 |
| 4687 | 531 // The following subroutines creates an HDF5 representation of the way |
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532 // we will store Octave range types (triplets of floating-point numbers). |
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533 // NUM_TYPE is the HDF5 numeric type to use for storage (e.g. |
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534 // H5T_NATIVE_DOUBLE to save as 'double'). Note that any necessary |
| 4687 | 535 // conversions are handled automatically by HDF5. |
| 536 | |
| 537 static hid_t | |
| 538 hdf5_make_range_type (hid_t num_type) | |
| 539 { | |
| 540 hid_t type_id = H5Tcreate (H5T_COMPOUND, sizeof (double) * 3); | |
| 541 | |
| 542 H5Tinsert (type_id, "base", 0 * sizeof (double), num_type); | |
| 543 H5Tinsert (type_id, "limit", 1 * sizeof (double), num_type); | |
| 544 H5Tinsert (type_id, "increment", 2 * sizeof (double), num_type); | |
| 545 | |
| 546 return type_id; | |
| 547 } | |
| 548 | |
| 549 bool | |
| 550 octave_range::save_hdf5 (hid_t loc_id, const char *name, | |
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551 bool /* save_as_floats */) |
| 4687 | 552 { |
| 4792 | 553 hsize_t dimens[3]; |
| 4687 | 554 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
| 555 bool retval = true; | |
| 556 | |
| 4815 | 557 space_hid = H5Screate_simple (0, dimens, 0); |
| 4687 | 558 if (space_hid < 0) return false; |
| 559 | |
| 560 type_hid = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
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561 if (type_hid < 0) |
| 4687 | 562 { |
| 563 H5Sclose (space_hid); | |
| 564 return false; | |
| 565 } | |
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566 #if HAVE_HDF5_18 |
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567 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, |
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568 H5P_DEFAULT, H5P_DEFAULT, H5P_DEFAULT); |
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569 #else |
| 4687 | 570 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); |
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571 #endif |
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572 if (data_hid < 0) |
| 4687 | 573 { |
| 574 H5Sclose (space_hid); | |
| 575 H5Tclose (type_hid); | |
| 576 return false; | |
| 577 } | |
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578 |
| 4687 | 579 Range r = range_value (); |
| 580 double range_vals[3]; | |
| 581 range_vals[0] = r.base (); | |
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582 range_vals[1] = r.inc () != 0 ? r.limit () : r.nelem (); |
| 4687 | 583 range_vals[2] = r.inc (); |
| 584 | |
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585 if (H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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586 range_vals) >= 0) |
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587 { |
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588 octave_idx_type nel = r.nelem (); |
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589 retval = hdf5_add_scalar_attr (data_hid, H5T_NATIVE_IDX, |
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590 "OCTAVE_RANGE_NELEM", &nel) >= 0; |
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591 } |
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592 else |
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593 retval = false; |
| 4687 | 594 |
| 595 H5Dclose (data_hid); | |
| 596 H5Tclose (type_hid); | |
| 597 H5Sclose (space_hid); | |
| 4837 | 598 |
| 4687 | 599 return retval; |
| 600 } | |
| 601 | |
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602 bool |
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603 octave_range::load_hdf5 (hid_t loc_id, const char *name) |
| 4687 | 604 { |
| 605 bool retval = false; | |
| 4837 | 606 |
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607 #if HAVE_HDF5_18 |
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608 hid_t data_hid = H5Dopen (loc_id, name, H5P_DEFAULT); |
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609 #else |
| 4687 | 610 hid_t data_hid = H5Dopen (loc_id, name); |
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611 #endif |
| 4687 | 612 hid_t type_hid = H5Dget_type (data_hid); |
| 613 | |
| 614 hid_t range_type = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
| 615 | |
| 616 if (! hdf5_types_compatible (type_hid, range_type)) | |
| 617 { | |
| 4837 | 618 H5Tclose (range_type); |
| 4687 | 619 H5Dclose (data_hid); |
| 620 return false; | |
| 621 } | |
| 622 | |
| 623 hid_t space_hid = H5Dget_space (data_hid); | |
| 624 hsize_t rank = H5Sget_simple_extent_ndims (space_hid); | |
| 625 | |
| 626 if (rank != 0) | |
| 627 { | |
| 4837 | 628 H5Tclose (range_type); |
| 4687 | 629 H5Sclose (space_hid); |
| 630 H5Dclose (data_hid); | |
| 631 return false; | |
| 632 } | |
| 633 | |
| 634 double rangevals[3]; | |
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635 if (H5Dread (data_hid, range_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, |
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636 rangevals) >= 0) |
| 4687 | 637 { |
| 638 retval = true; | |
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639 octave_idx_type nel; |
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640 if (hdf5_get_scalar_attr (data_hid, H5T_NATIVE_IDX, |
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641 "OCTAVE_RANGE_NELEM", &nel)) |
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642 range = Range (rangevals[0], rangevals[2], nel); |
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643 else |
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644 { |
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645 if (rangevals[2] != 0) |
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646 range = Range (rangevals[0], rangevals[1], rangevals[2]); |
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647 else |
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648 range = Range (rangevals[0], rangevals[2], |
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649 static_cast<octave_idx_type> (rangevals[1])); |
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650 } |
| 4687 | 651 } |
| 652 | |
| 4837 | 653 H5Tclose (range_type); |
| 4687 | 654 H5Sclose (space_hid); |
| 655 H5Dclose (data_hid); | |
| 4837 | 656 |
| 4687 | 657 return retval; |
| 658 } | |
| 4944 | 659 |
| 4687 | 660 #endif |
| 661 | |
| 5900 | 662 mxArray * |
| 663 octave_range::as_mxArray (void) const | |
| 664 { | |
| 665 mxArray *retval = new mxArray (mxDOUBLE_CLASS, dims (), mxREAL); | |
| 666 | |
| 667 double *pr = static_cast<double *> (retval->get_data ()); | |
| 668 | |
| 6686 | 669 mwSize nel = numel (); |
| 5900 | 670 |
| 671 Matrix m = matrix_value (); | |
| 672 | |
| 673 const double *p = m.data (); | |
| 674 | |
| 6686 | 675 for (mwSize i = 0; i < nel; i++) |
| 5900 | 676 pr[i] = p[i]; |
| 677 | |
| 678 return retval; | |
| 679 } | |
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680 |
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681 DEFUN (allow_noninteger_range_as_index, args, nargout, |
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682 "-*- texinfo -*-\n\ |
| 10840 | 683 @deftypefn {Built-in Function} {@var{val} =} allow_noninteger_range_as_index ()\n\ |
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684 @deftypefnx {Built-in Function} {@var{old_val} =} allow_noninteger_range_as_index (@var{new_val})\n\ |
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685 @deftypefnx {Built-in Function} {} allow_noninteger_range_as_index (@var{new_val}, \"local\")\n\ |
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686 Query or set the internal variable that controls whether non-integer\n\ |
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687 ranges are allowed as indices. This might be useful for @sc{matlab}\n\ |
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688 compatibility; however, it is still not entirely compatible because\n\ |
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689 @sc{matlab} treats the range expression differently in different contexts.\n\ |
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690 \n\ |
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691 When called from inside a function with the @qcode{\"local\"} option, the\n\ |
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692 variable is changed locally for the function and any subroutines it calls. \n\ |
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693 The original variable value is restored when exiting the function.\n\ |
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694 @end deftypefn") |
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695 { |
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696 return SET_INTERNAL_VARIABLE (allow_noninteger_range_as_index); |
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697 } |
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698 |
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699 /* |
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700 %!test |
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701 %! x = 0:10; |
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702 %! save = allow_noninteger_range_as_index (); |
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703 %! warn_state = warning ("query", "Octave:noninteger-range-as-index"); |
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704 %! unwind_protect |
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705 %! allow_noninteger_range_as_index (false); |
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706 %! fail ("x(2.1:5)"); |
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707 %! assert (x(2:5), 1:4); |
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708 %! allow_noninteger_range_as_index (true); |
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709 %! warning ("off", "Octave:noninteger-range-as-index"); |
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710 %! assert (x(2.49:5), 1:3); |
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711 %! assert (x(2.5:5), 2:4); |
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712 %! assert (x(2.51:5), 2:4); |
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713 %! unwind_protect_cleanup |
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714 %! allow_noninteger_range_as_index (save); |
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715 %! warning (warn_state.state, warn_state.identifier); |
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716 %! end_unwind_protect |
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717 */ |