Mercurial > octave-nkf
annotate src/ov-range.cc @ 7961:a5d1e27ee1f4 ss-3-1-51
3.1.51 snapshot
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Tue, 22 Jul 2008 11:40:48 -0400 |
| parents | 82be108cc558 |
| children | c777f3ce02d8 |
| rev | line source |
|---|---|
| 2376 | 1 /* |
| 2 | |
| 7017 | 3 Copyright (C) 1996, 1997, 1998, 2000, 2002, 2003, 2004, 2005, 2006, |
| 4 2007 John W. Eaton | |
| 2376 | 5 |
| 6 This file is part of Octave. | |
| 7 | |
| 8 Octave is free software; you can redistribute it and/or modify it | |
| 9 under the terms of the GNU General Public License as published by the | |
| 7016 | 10 Free Software Foundation; either version 3 of the License, or (at your |
| 11 option) any later version. | |
| 2376 | 12 |
| 13 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 16 for more details. | |
| 17 | |
| 18 You should have received a copy of the GNU General Public License | |
| 7016 | 19 along with Octave; see the file COPYING. If not, see |
| 20 <http://www.gnu.org/licenses/>. | |
| 2376 | 21 |
| 22 */ | |
| 23 | |
| 24 #ifdef HAVE_CONFIG_H | |
| 25 #include <config.h> | |
| 26 #endif | |
| 27 | |
| 3503 | 28 #include <iostream> |
| 2901 | 29 |
| 2376 | 30 #include "lo-ieee.h" |
| 31 #include "lo-utils.h" | |
| 32 | |
| 33 #include "gripes.h" | |
| 34 #include "ops.h" | |
| 3933 | 35 #include "oct-obj.h" |
| 2376 | 36 #include "ov-range.h" |
| 37 #include "ov-re-mat.h" | |
| 2410 | 38 #include "ov-scalar.h" |
| 2376 | 39 #include "pr-output.h" |
| 40 | |
| 4687 | 41 #include "byte-swap.h" |
| 42 #include "ls-hdf5.h" | |
| 43 #include "ls-utils.h" | |
| 44 | |
| 3219 | 45 DEFINE_OCTAVE_ALLOCATOR (octave_range); |
| 2376 | 46 |
| 4612 | 47 DEFINE_OV_TYPEID_FUNCTIONS_AND_DATA (octave_range, "range", "double"); |
| 2376 | 48 |
| 5759 | 49 static octave_base_value * |
| 50 default_numeric_conversion_function (const octave_base_value& a) | |
| 2376 | 51 { |
| 52 CAST_CONV_ARG (const octave_range&); | |
| 53 | |
| 54 return new octave_matrix (v.matrix_value ()); | |
| 55 } | |
| 56 | |
| 5759 | 57 octave_base_value::type_conv_fcn |
| 2376 | 58 octave_range::numeric_conversion_function (void) const |
| 59 { | |
| 60 return default_numeric_conversion_function; | |
| 61 } | |
| 62 | |
| 5759 | 63 octave_base_value * |
| 2410 | 64 octave_range::try_narrowing_conversion (void) |
| 65 { | |
| 5759 | 66 octave_base_value *retval = 0; |
| 2410 | 67 |
| 68 switch (range.nelem ()) | |
| 69 { | |
| 70 case 1: | |
| 71 retval = new octave_scalar (range.base ()); | |
| 72 break; | |
| 73 | |
| 74 case 0: | |
| 4417 | 75 retval = new octave_matrix (Matrix (1, 0)); |
| 2410 | 76 break; |
| 77 | |
| 78 default: | |
| 79 break; | |
| 80 } | |
| 81 | |
| 82 return retval; | |
| 83 } | |
| 84 | |
| 2436 | 85 octave_value |
| 4247 | 86 octave_range::subsref (const std::string& type, |
| 4219 | 87 const std::list<octave_value_list>& idx) |
| 3933 | 88 { |
| 89 octave_value retval; | |
| 90 | |
| 91 switch (type[0]) | |
| 92 { | |
| 93 case '(': | |
| 94 retval = do_index_op (idx.front ()); | |
| 95 break; | |
| 96 | |
| 97 case '{': | |
| 98 case '.': | |
| 99 { | |
| 100 std::string nm = type_name (); | |
| 101 error ("%s cannot be indexed with %c", nm.c_str (), type[0]); | |
| 102 } | |
| 103 break; | |
| 104 | |
| 105 default: | |
| 106 panic_impossible (); | |
| 107 } | |
| 108 | |
| 109 return retval.next_subsref (type, idx); | |
| 110 } | |
| 111 | |
| 112 octave_value | |
| 5885 | 113 octave_range::do_index_op (const octave_value_list& idx, bool resize_ok) |
| 2436 | 114 { |
| 5775 | 115 // FIXME -- this doesn't solve the problem of |
| 2436 | 116 // |
| 117 // a = 1:5; a(1, 1, 1) | |
| 118 // | |
| 119 // and similar constructions. Hmm... | |
| 120 | |
| 5775 | 121 // FIXME -- using this constructor avoids possibly narrowing |
| 2436 | 122 // the range to a scalar value. Need a better solution to this |
| 123 // problem. | |
| 124 | |
| 125 octave_value tmp (new octave_matrix (range.matrix_value ())); | |
| 126 | |
| 3933 | 127 return tmp.do_index_op (idx, resize_ok); |
| 2436 | 128 } |
| 129 | |
| 2376 | 130 double |
| 131 octave_range::double_value (bool) const | |
| 132 { | |
| 4102 | 133 double retval = lo_ieee_nan_value (); |
| 2376 | 134 |
| 5275 | 135 octave_idx_type nel = range.nelem (); |
| 2376 | 136 |
| 4455 | 137 if (nel > 0) |
| 138 { | |
| 5781 | 139 gripe_implicit_conversion ("Octave:array-as-scalar", |
| 140 "range", "real scalar"); | |
| 4455 | 141 |
| 142 retval = range.base (); | |
| 143 } | |
| 2376 | 144 else |
| 145 gripe_invalid_conversion ("range", "real scalar"); | |
| 146 | |
| 147 return retval; | |
| 148 } | |
| 149 | |
|
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150 float |
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151 octave_range::float_value (bool) const |
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152 { |
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153 float retval = lo_ieee_float_nan_value (); |
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154 |
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155 octave_idx_type nel = range.nelem (); |
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156 |
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157 if (nel > 0) |
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158 { |
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159 gripe_implicit_conversion ("Octave:array-as-scalar", |
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160 "range", "real scalar"); |
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161 |
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162 retval = range.base (); |
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163 } |
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164 else |
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165 gripe_invalid_conversion ("range", "real scalar"); |
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166 |
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167 return retval; |
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168 } |
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169 |
| 2376 | 170 octave_value |
| 4017 | 171 octave_range::all (int dim) const |
| 2376 | 172 { |
| 5775 | 173 // FIXME -- this is a potential waste of memory. |
| 2436 | 174 |
| 175 Matrix m = range.matrix_value (); | |
| 176 | |
| 4017 | 177 return m.all (dim); |
| 2376 | 178 } |
| 179 | |
| 180 octave_value | |
| 4017 | 181 octave_range::any (int dim) const |
| 2376 | 182 { |
| 5775 | 183 // FIXME -- this is a potential waste of memory. |
| 4017 | 184 |
| 185 Matrix m = range.matrix_value (); | |
| 186 | |
| 187 return m.any (dim); | |
| 2376 | 188 } |
| 189 | |
| 190 bool | |
| 191 octave_range::is_true (void) const | |
| 192 { | |
| 193 bool retval = false; | |
| 2436 | 194 |
| 4478 | 195 if (range.nelem () != 0) |
| 2436 | 196 { |
| 5775 | 197 // FIXME -- this is a potential waste of memory. |
| 2436 | 198 |
| 199 Matrix m ((range.matrix_value () . all ()) . all ()); | |
| 200 | |
| 201 retval = (m.rows () == 1 && m.columns () == 1 && m (0, 0) != 0.0); | |
| 202 } | |
| 203 | |
| 2376 | 204 return retval; |
| 205 } | |
| 206 | |
| 207 Complex | |
| 208 octave_range::complex_value (bool) const | |
| 209 { | |
| 4102 | 210 double tmp = lo_ieee_nan_value (); |
| 211 | |
| 212 Complex retval (tmp, tmp); | |
| 2376 | 213 |
| 5275 | 214 octave_idx_type nel = range.nelem (); |
| 2376 | 215 |
| 4455 | 216 if (nel > 0) |
| 217 { | |
| 5781 | 218 gripe_implicit_conversion ("Octave:array-as-scalar", |
| 219 "range", "complex scalar"); | |
| 4455 | 220 |
| 221 retval = range.base (); | |
| 222 } | |
| 2376 | 223 else |
| 224 gripe_invalid_conversion ("range", "complex scalar"); | |
| 225 | |
| 226 return retval; | |
| 227 } | |
| 228 | |
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229 FloatComplex |
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230 octave_range::float_complex_value (bool) const |
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231 { |
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232 float tmp = lo_ieee_float_nan_value (); |
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233 |
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234 FloatComplex retval (tmp, tmp); |
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235 |
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236 octave_idx_type nel = range.nelem (); |
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237 |
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238 if (nel > 0) |
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239 { |
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240 gripe_implicit_conversion ("Octave:array-as-scalar", |
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241 "range", "complex scalar"); |
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242 |
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243 retval = range.base (); |
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244 } |
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245 else |
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246 gripe_invalid_conversion ("range", "complex scalar"); |
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247 |
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248 return retval; |
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249 } |
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250 |
| 5731 | 251 octave_value |
| 252 octave_range::resize (const dim_vector& dv, bool fill) const | |
| 253 { | |
| 254 NDArray retval = array_value (); | |
| 255 if (fill) | |
| 256 retval.resize (dv, NDArray::resize_fill_value()); | |
| 257 else | |
| 258 retval.resize (dv); | |
| 259 return retval; | |
| 260 } | |
| 261 | |
| 2376 | 262 octave_value |
| 5279 | 263 octave_range::convert_to_str_internal (bool pad, bool force, char type) const |
| 2449 | 264 { |
| 265 octave_value tmp (range.matrix_value ()); | |
| 5279 | 266 return tmp.convert_to_str (pad, force, type); |
| 2449 | 267 } |
| 268 | |
| 2376 | 269 void |
| 3523 | 270 octave_range::print (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 271 { |
| 272 print_raw (os, pr_as_read_syntax); | |
| 273 newline (os); | |
| 274 } | |
| 275 | |
| 276 void | |
| 3523 | 277 octave_range::print_raw (std::ostream& os, bool pr_as_read_syntax) const |
| 2901 | 278 { |
| 279 octave_print_internal (os, range, pr_as_read_syntax, | |
| 280 current_print_indent_level ()); | |
| 281 } | |
| 282 | |
| 283 bool | |
| 3523 | 284 octave_range::print_name_tag (std::ostream& os, const std::string& name) const |
| 2376 | 285 { |
| 2901 | 286 bool retval = false; |
| 287 | |
| 5275 | 288 octave_idx_type n = range.nelem (); |
| 2901 | 289 |
| 290 indent (os); | |
| 291 | |
| 292 if (n == 0 || n == 1) | |
| 293 os << name << " = "; | |
| 294 else | |
| 295 { | |
| 296 os << name << " ="; | |
| 297 newline (os); | |
| 298 newline (os); | |
| 299 retval = true; | |
| 300 } | |
| 301 | |
| 302 return retval; | |
| 2376 | 303 } |
| 304 | |
| 4687 | 305 // Skip white space and comments on stream IS. |
| 306 | |
| 307 static void | |
| 308 skip_comments (std::istream& is) | |
| 309 { | |
| 310 char c = '\0'; | |
| 311 while (is.get (c)) | |
| 312 { | |
| 313 if (c == ' ' || c == '\t' || c == '\n') | |
| 314 ; // Skip whitespace on way to beginning of next line. | |
| 315 else | |
| 316 break; | |
| 317 } | |
| 318 | |
| 319 for (;;) | |
| 320 { | |
| 321 if (is && (c == '%' || c == '#')) | |
| 322 while (is.get (c) && c != '\n') | |
| 323 ; // Skip to beginning of next line, ignoring everything. | |
| 324 else | |
| 325 break; | |
| 326 } | |
| 327 } | |
| 328 | |
| 329 bool | |
| 6974 | 330 octave_range::save_ascii (std::ostream& os) |
| 4687 | 331 { |
| 332 Range r = range_value (); | |
| 333 double base = r.base (); | |
| 334 double limit = r.limit (); | |
| 335 double inc = r.inc (); | |
| 336 | |
| 337 os << "# base, limit, increment\n"; | |
| 338 octave_write_double (os, base); | |
| 339 os << " "; | |
| 340 octave_write_double (os, limit); | |
| 341 os << " "; | |
| 342 octave_write_double (os, inc); | |
| 343 os << "\n"; | |
| 344 | |
| 345 return true; | |
| 346 } | |
| 347 | |
| 348 bool | |
| 349 octave_range::load_ascii (std::istream& is) | |
| 350 { | |
| 351 // # base, limit, range comment added by save (). | |
| 352 skip_comments (is); | |
| 353 | |
| 354 is >> range; | |
| 355 | |
| 356 if (!is) | |
| 357 { | |
| 358 error ("load: failed to load range constant"); | |
| 359 return false; | |
| 360 } | |
| 361 | |
| 362 return true; | |
| 363 } | |
| 364 | |
| 365 bool | |
| 366 octave_range::save_binary (std::ostream& os, bool& /* save_as_floats */) | |
| 367 { | |
| 5760 | 368 char tmp = LS_DOUBLE; |
| 369 os.write (reinterpret_cast<char *> (&tmp), 1); | |
| 4687 | 370 Range r = range_value (); |
| 371 double bas = r.base (); | |
| 372 double lim = r.limit (); | |
| 373 double inc = r.inc (); | |
| 5760 | 374 os.write (reinterpret_cast<char *> (&bas), 8); |
| 375 os.write (reinterpret_cast<char *> (&lim), 8); | |
| 376 os.write (reinterpret_cast<char *> (&inc), 8); | |
| 4687 | 377 |
| 378 return true; | |
| 379 } | |
| 380 | |
| 381 bool | |
| 382 octave_range::load_binary (std::istream& is, bool swap, | |
| 383 oct_mach_info::float_format /* fmt */) | |
| 384 { | |
| 385 char tmp; | |
| 5760 | 386 if (! is.read (reinterpret_cast<char *> (&tmp), 1)) |
| 4687 | 387 return false; |
| 388 double bas, lim, inc; | |
| 5760 | 389 if (! is.read (reinterpret_cast<char *> (&bas), 8)) |
| 4687 | 390 return false; |
| 391 if (swap) | |
| 4944 | 392 swap_bytes<8> (&bas); |
| 5760 | 393 if (! is.read (reinterpret_cast<char *> (&lim), 8)) |
| 4687 | 394 return false; |
| 395 if (swap) | |
| 4944 | 396 swap_bytes<8> (&lim); |
| 5760 | 397 if (! is.read (reinterpret_cast<char *> (&inc), 8)) |
| 4687 | 398 return false; |
| 399 if (swap) | |
| 4944 | 400 swap_bytes<8> (&inc); |
| 4687 | 401 Range r (bas, lim, inc); |
| 402 range = r; | |
| 403 return true; | |
| 404 } | |
| 405 | |
| 406 #if defined (HAVE_HDF5) | |
| 4944 | 407 |
| 4687 | 408 // The following subroutines creates an HDF5 representation of the way |
| 409 // we will store Octave range types (triplets of floating-point numbers). | |
| 410 // NUM_TYPE is the HDF5 numeric type to use for storage (e.g. | |
| 411 // H5T_NATIVE_DOUBLE to save as 'double'). Note that any necessary | |
| 412 // conversions are handled automatically by HDF5. | |
| 413 | |
| 414 static hid_t | |
| 415 hdf5_make_range_type (hid_t num_type) | |
| 416 { | |
| 417 hid_t type_id = H5Tcreate (H5T_COMPOUND, sizeof (double) * 3); | |
| 418 | |
| 419 H5Tinsert (type_id, "base", 0 * sizeof (double), num_type); | |
| 420 H5Tinsert (type_id, "limit", 1 * sizeof (double), num_type); | |
| 421 H5Tinsert (type_id, "increment", 2 * sizeof (double), num_type); | |
| 422 | |
| 423 return type_id; | |
| 424 } | |
| 425 | |
| 426 bool | |
| 427 octave_range::save_hdf5 (hid_t loc_id, const char *name, | |
| 428 bool /* save_as_floats */) | |
| 429 { | |
| 4792 | 430 hsize_t dimens[3]; |
| 4687 | 431 hid_t space_hid = -1, type_hid = -1, data_hid = -1; |
| 432 bool retval = true; | |
| 433 | |
| 4815 | 434 space_hid = H5Screate_simple (0, dimens, 0); |
| 4687 | 435 if (space_hid < 0) return false; |
| 436 | |
| 437 type_hid = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
| 438 if (type_hid < 0) | |
| 439 { | |
| 440 H5Sclose (space_hid); | |
| 441 return false; | |
| 442 } | |
| 443 | |
| 444 data_hid = H5Dcreate (loc_id, name, type_hid, space_hid, H5P_DEFAULT); | |
| 445 if (data_hid < 0) | |
| 446 { | |
| 447 H5Sclose (space_hid); | |
| 448 H5Tclose (type_hid); | |
| 449 return false; | |
| 450 } | |
| 451 | |
| 452 Range r = range_value (); | |
| 453 double range_vals[3]; | |
| 454 range_vals[0] = r.base (); | |
| 455 range_vals[1] = r.limit (); | |
| 456 range_vals[2] = r.inc (); | |
| 457 | |
| 458 retval = H5Dwrite (data_hid, type_hid, H5S_ALL, H5S_ALL, H5P_DEFAULT, | |
| 4815 | 459 range_vals) >= 0; |
| 4687 | 460 |
| 461 H5Dclose (data_hid); | |
| 462 H5Tclose (type_hid); | |
| 463 H5Sclose (space_hid); | |
| 4837 | 464 |
| 4687 | 465 return retval; |
| 466 } | |
| 467 | |
| 468 bool | |
| 469 octave_range::load_hdf5 (hid_t loc_id, const char *name, | |
| 470 bool /* have_h5giterate_bug */) | |
| 471 { | |
| 472 bool retval = false; | |
| 4837 | 473 |
| 4687 | 474 hid_t data_hid = H5Dopen (loc_id, name); |
| 475 hid_t type_hid = H5Dget_type (data_hid); | |
| 476 | |
| 477 hid_t range_type = hdf5_make_range_type (H5T_NATIVE_DOUBLE); | |
| 478 | |
| 479 if (! hdf5_types_compatible (type_hid, range_type)) | |
| 480 { | |
| 4837 | 481 H5Tclose (range_type); |
| 4687 | 482 H5Dclose (data_hid); |
| 483 return false; | |
| 484 } | |
| 485 | |
| 486 hid_t space_hid = H5Dget_space (data_hid); | |
| 487 hsize_t rank = H5Sget_simple_extent_ndims (space_hid); | |
| 488 | |
| 489 if (rank != 0) | |
| 490 { | |
| 4837 | 491 H5Tclose (range_type); |
| 4687 | 492 H5Sclose (space_hid); |
| 493 H5Dclose (data_hid); | |
| 494 return false; | |
| 495 } | |
| 496 | |
| 497 double rangevals[3]; | |
| 498 if (H5Dread (data_hid, range_type, H5S_ALL, H5S_ALL, H5P_DEFAULT, | |
| 4815 | 499 rangevals) >= 0) |
| 4687 | 500 { |
| 501 retval = true; | |
| 502 Range r (rangevals[0], rangevals[1], rangevals[2]); | |
| 503 range = r; | |
| 504 } | |
| 505 | |
| 4837 | 506 H5Tclose (range_type); |
| 4687 | 507 H5Sclose (space_hid); |
| 508 H5Dclose (data_hid); | |
| 4837 | 509 |
| 4687 | 510 return retval; |
| 511 } | |
| 4944 | 512 |
| 4687 | 513 #endif |
| 514 | |
| 5900 | 515 mxArray * |
| 516 octave_range::as_mxArray (void) const | |
| 517 { | |
| 518 mxArray *retval = new mxArray (mxDOUBLE_CLASS, dims (), mxREAL); | |
| 519 | |
| 520 double *pr = static_cast<double *> (retval->get_data ()); | |
| 521 | |
| 6686 | 522 mwSize nel = numel (); |
| 5900 | 523 |
| 524 Matrix m = matrix_value (); | |
| 525 | |
| 526 const double *p = m.data (); | |
| 527 | |
| 6686 | 528 for (mwSize i = 0; i < nel; i++) |
| 5900 | 529 pr[i] = p[i]; |
| 530 | |
| 531 return retval; | |
| 532 } | |
| 533 | |
| 2376 | 534 /* |
| 535 ;;; Local Variables: *** | |
| 536 ;;; mode: C++ *** | |
| 537 ;;; End: *** | |
| 538 */ |