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comparison liboctave/idx-vector.h @ 10273:3a8c13b71612

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implement special-case optimization for sort of index vectors
author Jaroslav Hajek <highegg@gmail.com>
date Mon, 08 Feb 2010 11:16:52 +0100
parents 4c0cdbe0acca
children 22a7913bbeb5
comparison
equal deleted inserted replaced
10272:272179888089 10273:3a8c13b71612
87 // Index class. 87 // Index class.
88 virtual idx_class_type idx_class (void) const { return class_invalid; } 88 virtual idx_class_type idx_class (void) const { return class_invalid; }
89 89
90 // Sorts, maybe uniqifies, and returns a clone object pointer. 90 // Sorts, maybe uniqifies, and returns a clone object pointer.
91 virtual idx_base_rep *sort_uniq_clone (bool uniq = false) = 0; 91 virtual idx_base_rep *sort_uniq_clone (bool uniq = false) = 0;
92 // Sorts, and returns a sorting permutation (aka Array::sort).
93 virtual idx_base_rep *sort_idx (Array<octave_idx_type>&) = 0;
92 94
93 // Checks whether the index is colon or a range equivalent to colon. 95 // Checks whether the index is colon or a range equivalent to colon.
94 virtual bool is_colon_equiv (octave_idx_type) const 96 virtual bool is_colon_equiv (octave_idx_type) const
95 { return false; } 97 { return false; }
96 98
132 134
133 idx_class_type idx_class (void) const { return class_colon; } 135 idx_class_type idx_class (void) const { return class_colon; }
134 136
135 idx_base_rep *sort_uniq_clone (bool = false) 137 idx_base_rep *sort_uniq_clone (bool = false)
136 { count++; return this; } 138 { count++; return this; }
139
140 idx_base_rep *sort_idx (Array<octave_idx_type>&);
137 141
138 bool is_colon_equiv (octave_idx_type) const 142 bool is_colon_equiv (octave_idx_type) const
139 { return true; } 143 { return true; }
140 144
141 std::ostream& print (std::ostream& os) const; 145 std::ostream& print (std::ostream& os) const;
181 185
182 idx_class_type idx_class (void) const { return class_range; } 186 idx_class_type idx_class (void) const { return class_range; }
183 187
184 idx_base_rep *sort_uniq_clone (bool uniq = false); 188 idx_base_rep *sort_uniq_clone (bool uniq = false);
185 189
190 idx_base_rep *sort_idx (Array<octave_idx_type>&);
191
186 bool is_colon_equiv (octave_idx_type n) const 192 bool is_colon_equiv (octave_idx_type n) const
187 { return start == 0 && step == 1 && len == n; } 193 { return start == 0 && step == 1 && len == n; }
188 194
189 dim_vector orig_dimensions (void) const 195 dim_vector orig_dimensions (void) const
190 { return dim_vector (1, len); } 196 { return dim_vector (1, len); }
237 243
238 idx_class_type idx_class (void) const { return class_scalar; } 244 idx_class_type idx_class (void) const { return class_scalar; }
239 245
240 idx_base_rep *sort_uniq_clone (bool = false) 246 idx_base_rep *sort_uniq_clone (bool = false)
241 { count++; return this; } 247 { count++; return this; }
248
249 idx_base_rep *sort_idx (Array<octave_idx_type>&);
242 250
243 bool is_colon_equiv (octave_idx_type n) const 251 bool is_colon_equiv (octave_idx_type n) const
244 { return n == 1 && data == 0; } 252 { return n == 1 && data == 0; }
245 253
246 dim_vector orig_dimensions (void) const 254 dim_vector orig_dimensions (void) const
303 311
304 idx_class_type idx_class (void) const { return class_vector; } 312 idx_class_type idx_class (void) const { return class_vector; }
305 313
306 idx_base_rep *sort_uniq_clone (bool uniq = false); 314 idx_base_rep *sort_uniq_clone (bool uniq = false);
307 315
316 idx_base_rep *sort_idx (Array<octave_idx_type>&);
317
308 dim_vector orig_dimensions (void) const 318 dim_vector orig_dimensions (void) const
309 { return orig_dims; } 319 { return orig_dims; }
310 320
311 const octave_idx_type *get_data (void) const { return data; } 321 const octave_idx_type *get_data (void) const { return data; }
312 322
367 idx_class_type idx_class (void) const { return class_mask; } 377 idx_class_type idx_class (void) const { return class_mask; }
368 378
369 idx_base_rep *sort_uniq_clone (bool = false) 379 idx_base_rep *sort_uniq_clone (bool = false)
370 { count++; return this; } 380 { count++; return this; }
371 381
382 idx_base_rep *sort_idx (Array<octave_idx_type>&);
383
372 dim_vector orig_dimensions (void) const 384 dim_vector orig_dimensions (void) const
373 { return orig_dims; } 385 { return orig_dims; }
374 386
375 bool is_colon_equiv (octave_idx_type n) const 387 bool is_colon_equiv (octave_idx_type n) const
376 { return len == n && ext == n; } 388 { return len == n && ext == n; }
557 bool is_colon_equiv (octave_idx_type n) const 569 bool is_colon_equiv (octave_idx_type n) const
558 { return rep->is_colon_equiv (n); } 570 { return rep->is_colon_equiv (n); }
559 571
560 idx_vector sorted (bool uniq = false) const 572 idx_vector sorted (bool uniq = false) const
561 { return idx_vector (rep->sort_uniq_clone (uniq)); } 573 { return idx_vector (rep->sort_uniq_clone (uniq)); }
574
575 idx_vector sorted (Array<octave_idx_type>& sidx) const
576 { return idx_vector (rep->sort_idx (sidx)); }
562 577
563 dim_vector orig_dimensions (void) const { return rep->orig_dimensions (); } 578 dim_vector orig_dimensions (void) const { return rep->orig_dimensions (); }
564 579
565 octave_idx_type orig_rows (void) const 580 octave_idx_type orig_rows (void) const
566 { return orig_dimensions () (0); } 581 { return orig_dimensions () (0); }