Mercurial > octave-nkf
annotate liboctave/Sparse.h @ 10425:0677c5d80b77
rewrite 1D sparse indexing
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Fri, 19 Mar 2010 13:00:06 +0100 |
| parents | 99e9bae2d81e |
| children | ded9beac7582 |
| rev | line source |
|---|---|
| 5164 | 1 // Template sparse classes |
| 2 /* | |
| 3 | |
| 8920 | 4 Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009 David Bateman |
| 7016 | 5 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004 Andy Adler |
| 6 | |
| 7 This file is part of Octave. | |
| 5164 | 8 |
| 9 Octave is free software; you can redistribute it and/or modify it | |
| 10 under the terms of the GNU General Public License as published by the | |
| 7016 | 11 Free Software Foundation; either version 3 of the License, or (at your |
| 12 option) any later version. | |
| 5164 | 13 |
| 14 Octave is distributed in the hope that it will be useful, but WITHOUT | |
| 15 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 17 for more details. | |
| 18 | |
| 19 You should have received a copy of the GNU General Public License | |
| 7016 | 20 along with Octave; see the file COPYING. If not, see |
| 21 <http://www.gnu.org/licenses/>. | |
| 5164 | 22 |
| 23 */ | |
| 24 | |
| 25 #if !defined (octave_Sparse_h) | |
| 26 #define octave_Sparse_h 1 | |
| 27 | |
| 28 #include <cassert> | |
| 29 #include <cstddef> | |
| 30 | |
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31 #include <iosfwd> |
| 5164 | 32 |
| 33 #include "Array.h" | |
| 34 #include "dim-vector.h" | |
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35 #include "lo-error.h" |
| 5164 | 36 #include "lo-utils.h" |
| 37 | |
| 7433 | 38 #include "oct-sort.h" |
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39 #include "oct-mem.h" |
| 7433 | 40 |
| 5164 | 41 class idx_vector; |
| 42 | |
| 43 // Two dimensional sparse class. Handles the reference counting for | |
| 44 // all the derived classes. | |
| 45 | |
| 46 template <class T> | |
| 47 class | |
| 48 Sparse | |
| 49 { | |
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50 public: |
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51 |
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52 typedef T element_type; |
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53 |
| 5164 | 54 protected: |
| 55 //-------------------------------------------------------------------- | |
| 56 // The real representation of all Sparse arrays. | |
| 57 //-------------------------------------------------------------------- | |
| 58 | |
| 6108 | 59 class OCTAVE_API SparseRep |
| 5164 | 60 { |
| 61 public: | |
| 62 | |
| 63 T *d; | |
| 5275 | 64 octave_idx_type *r; |
| 65 octave_idx_type *c; | |
| 5604 | 66 octave_idx_type nzmx; |
| 5275 | 67 octave_idx_type nrows; |
| 68 octave_idx_type ncols; | |
| 5164 | 69 int count; |
| 70 | |
| 5604 | 71 SparseRep (void) : d (0), r (0), c (new octave_idx_type [1]), nzmx (0), nrows (0), |
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72 ncols (0), count (1) { c[0] = 0; } |
| 5164 | 73 |
| 5604 | 74 SparseRep (octave_idx_type n) : d (0), r (0), c (new octave_idx_type [n+1]), nzmx (0), nrows (n), |
| 5164 | 75 ncols (n), count (1) |
| 76 { | |
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77 for (octave_idx_type i = 0; i < n + 1; i++) |
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78 c[i] = 0; |
| 5164 | 79 } |
| 80 | |
| 5604 | 81 SparseRep (octave_idx_type nr, octave_idx_type nc) : d (0), r (0), c (new octave_idx_type [nc+1]), nzmx (0), |
| 5164 | 82 nrows (nr), ncols (nc), count (1) |
| 83 { | |
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84 for (octave_idx_type i = 0; i < nc + 1; i++) |
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85 c[i] = 0; |
| 5164 | 86 } |
| 87 | |
| 5275 | 88 SparseRep (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz) : d (new T [nz]), |
| 5604 | 89 r (new octave_idx_type [nz]), c (new octave_idx_type [nc+1]), nzmx (nz), nrows (nr), |
| 5164 | 90 ncols (nc), count (1) |
| 91 { | |
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92 for (octave_idx_type i = 0; i < nc + 1; i++) |
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93 c[i] = 0; |
| 5164 | 94 } |
| 95 | |
| 96 SparseRep (const SparseRep& a) | |
| 5604 | 97 : d (new T [a.nzmx]), r (new octave_idx_type [a.nzmx]), c (new octave_idx_type [a.ncols + 1]), |
| 98 nzmx (a.nzmx), nrows (a.nrows), ncols (a.ncols), count (1) | |
| 5164 | 99 { |
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100 for (octave_idx_type i = 0; i < nzmx; i++) |
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101 { |
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102 d[i] = a.d[i]; |
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103 r[i] = a.r[i]; |
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104 } |
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105 for (octave_idx_type i = 0; i < ncols + 1; i++) |
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106 c[i] = a.c[i]; |
| 5164 | 107 } |
| 108 | |
| 109 ~SparseRep (void) { delete [] d; delete [] r; delete [] c; } | |
| 110 | |
| 5604 | 111 octave_idx_type length (void) const { return nzmx; } |
| 5164 | 112 |
| 5604 | 113 octave_idx_type nnz (void) const { return c [ncols]; } |
| 5164 | 114 |
| 5275 | 115 T& elem (octave_idx_type _r, octave_idx_type _c); |
| 5164 | 116 |
| 5275 | 117 T celem (octave_idx_type _r, octave_idx_type _c) const; |
| 5164 | 118 |
| 5275 | 119 T& data (octave_idx_type i) { return d[i]; } |
| 5164 | 120 |
| 5275 | 121 T cdata (octave_idx_type i) const { return d[i]; } |
| 5164 | 122 |
| 5275 | 123 octave_idx_type& ridx (octave_idx_type i) { return r[i]; } |
| 5164 | 124 |
| 5275 | 125 octave_idx_type cridx (octave_idx_type i) const { return r[i]; } |
| 5164 | 126 |
| 5275 | 127 octave_idx_type& cidx (octave_idx_type i) { return c[i]; } |
| 5164 | 128 |
| 5275 | 129 octave_idx_type ccidx (octave_idx_type i) const { return c[i]; } |
| 5164 | 130 |
| 131 void maybe_compress (bool remove_zeros); | |
| 132 | |
| 5275 | 133 void change_length (octave_idx_type nz); |
| 5164 | 134 |
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135 bool indices_ok (void) const; |
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136 |
| 5164 | 137 private: |
| 138 | |
| 139 // No assignment! | |
| 140 | |
| 141 SparseRep& operator = (const SparseRep& a); | |
| 142 }; | |
| 143 | |
| 144 //-------------------------------------------------------------------- | |
| 145 | |
| 146 void make_unique (void) | |
| 147 { | |
| 148 if (rep->count > 1) | |
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149 { |
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150 --rep->count; |
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151 rep = new SparseRep (*rep); |
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152 } |
| 5164 | 153 } |
| 154 | |
| 155 public: | |
| 156 | |
| 157 // !!! WARNING !!! -- these should be protected, not public. You | |
| 158 // should not access these data members directly! | |
| 159 | |
| 160 typename Sparse<T>::SparseRep *rep; | |
| 161 | |
| 162 dim_vector dimensions; | |
| 163 | |
| 164 protected: | |
| 165 idx_vector *idx; | |
| 5275 | 166 octave_idx_type idx_count; |
| 5164 | 167 |
| 168 private: | |
| 169 | |
| 170 typename Sparse<T>::SparseRep *nil_rep (void) const | |
| 171 { | |
| 172 static typename Sparse<T>::SparseRep *nr | |
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173 = new typename Sparse<T>::SparseRep (); |
| 5164 | 174 |
| 175 nr->count++; | |
| 176 | |
| 177 return nr; | |
| 178 } | |
| 179 | |
| 180 public: | |
| 181 | |
| 182 Sparse (void) | |
| 183 : rep (nil_rep ()), dimensions (dim_vector(0,0)), | |
| 184 idx (0), idx_count (0) { } | |
| 185 | |
| 5275 | 186 explicit Sparse (octave_idx_type n) |
| 5164 | 187 : rep (new typename Sparse<T>::SparseRep (n)), |
| 188 dimensions (dim_vector (n, n)), idx (0), idx_count (0) { } | |
| 189 | |
| 5275 | 190 explicit Sparse (octave_idx_type nr, octave_idx_type nc) |
| 5164 | 191 : rep (new typename Sparse<T>::SparseRep (nr, nc)), |
| 192 dimensions (dim_vector (nr, nc)), idx (0), idx_count (0) { } | |
| 193 | |
| 5275 | 194 explicit Sparse (octave_idx_type nr, octave_idx_type nc, T val); |
| 5164 | 195 |
| 5275 | 196 Sparse (const dim_vector& dv, octave_idx_type nz) |
| 5164 | 197 : rep (new typename Sparse<T>::SparseRep (dv(0), dv(1), nz)), |
| 198 dimensions (dv), idx (0), idx_count (0) { } | |
| 199 | |
| 5275 | 200 Sparse (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz) |
| 5164 | 201 : rep (new typename Sparse<T>::SparseRep (nr, nc, nz)), |
| 202 dimensions (dim_vector (nr, nc)), idx (0), idx_count (0) { } | |
| 203 | |
| 204 // Type conversion case. | |
| 205 template <class U> Sparse (const Sparse<U>& a); | |
| 206 | |
| 207 // No type conversion case. | |
| 208 Sparse (const Sparse<T>& a) | |
| 209 : rep (a.rep), dimensions (a.dimensions), idx (0), idx_count (0) | |
| 210 { | |
| 211 rep->count++; | |
| 212 } | |
| 213 | |
| 214 public: | |
| 215 | |
| 216 Sparse (const dim_vector& dv); | |
| 217 | |
| 218 Sparse (const Sparse<T>& a, const dim_vector& dv); | |
| 219 | |
| 5275 | 220 Sparse (const Array<T>& a, const Array<octave_idx_type>& r, const Array<octave_idx_type>& c, |
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221 octave_idx_type nr, octave_idx_type nc, bool sum_terms); |
| 5164 | 222 |
| 223 Sparse (const Array<T>& a, const Array<double>& r, const Array<double>& c, | |
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224 octave_idx_type nr, octave_idx_type nc, bool sum_terms); |
| 5164 | 225 |
| 226 // Sparsify a normal matrix | |
| 227 Sparse (const Array<T>& a); | |
| 228 | |
| 229 virtual ~Sparse (void); | |
| 230 | |
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231 Sparse<T>& operator = (const Sparse<T>& a); |
| 5164 | 232 |
| 5604 | 233 // Note that nzmax and capacity are the amount of storage for |
| 234 // non-zero elements, while nnz is the actual number of non-zero | |
| 235 // terms. | |
| 236 octave_idx_type nzmax (void) const { return rep->length (); } | |
| 237 octave_idx_type capacity (void) const { return nzmax (); } | |
| 238 octave_idx_type nnz (void) const { return rep->nnz (); } | |
| 5164 | 239 |
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240 // Querying the number of elements (incl. zeros) may overflow the index type, |
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241 // so don't do it unless you really need it. |
| 5275 | 242 octave_idx_type numel (void) const |
| 5164 | 243 { |
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244 return dimensions.safe_numel (); |
| 5164 | 245 } |
| 246 | |
| 5275 | 247 octave_idx_type nelem (void) const { return capacity (); } |
| 248 octave_idx_type length (void) const { return numel (); } | |
| 5164 | 249 |
| 5275 | 250 octave_idx_type dim1 (void) const { return dimensions(0); } |
| 251 octave_idx_type dim2 (void) const { return dimensions(1); } | |
| 5164 | 252 |
| 5275 | 253 octave_idx_type rows (void) const { return dim1 (); } |
| 254 octave_idx_type cols (void) const { return dim2 (); } | |
| 255 octave_idx_type columns (void) const { return dim2 (); } | |
| 5164 | 256 |
| 5275 | 257 octave_idx_type get_row_index (octave_idx_type k) { return ridx (k); } |
| 258 octave_idx_type get_col_index (octave_idx_type k) | |
| 5164 | 259 { |
| 5275 | 260 octave_idx_type ret = 0; |
| 5164 | 261 while (cidx(ret+1) < k) |
| 262 ret++; | |
| 263 return ret; | |
| 264 } | |
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265 |
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266 size_t byte_size (void) const |
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267 { |
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268 return (static_cast<size_t>(cols () + 1) * sizeof (octave_idx_type) |
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269 + static_cast<size_t> (capacity ()) * (sizeof (T) + sizeof (octave_idx_type))); |
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270 } |
| 5164 | 271 |
| 272 dim_vector dims (void) const { return dimensions; } | |
| 273 | |
| 274 Sparse<T> squeeze (void) const { return *this; } | |
| 275 | |
| 5275 | 276 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const; |
| 5164 | 277 |
| 5275 | 278 T range_error (const char *fcn, octave_idx_type n) const; |
| 279 T& range_error (const char *fcn, octave_idx_type n); | |
| 5164 | 280 |
| 5275 | 281 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const; |
| 282 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j); | |
| 5164 | 283 |
| 5275 | 284 T range_error (const char *fcn, const Array<octave_idx_type>& ra_idx) const; |
| 285 T& range_error (const char *fcn, const Array<octave_idx_type>& ra_idx); | |
| 5164 | 286 |
| 287 // No checking, even for multiple references, ever. | |
| 288 | |
| 5275 | 289 T& xelem (octave_idx_type n) |
| 5164 | 290 { |
| 5275 | 291 octave_idx_type i = n % rows (), j = n / rows(); |
| 5164 | 292 return xelem (i, j); |
| 293 } | |
| 294 | |
| 5275 | 295 T xelem (octave_idx_type n) const |
| 5164 | 296 { |
| 5275 | 297 octave_idx_type i = n % rows (), j = n / rows(); |
| 5164 | 298 return xelem (i, j); |
| 299 } | |
| 300 | |
| 5275 | 301 T& xelem (octave_idx_type i, octave_idx_type j) { return rep->elem (i, j); } |
| 302 T xelem (octave_idx_type i, octave_idx_type j) const { return rep->celem (i, j); } | |
| 5164 | 303 |
| 5275 | 304 T& xelem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 305 { return xelem (compute_index (ra_idx)); } |
| 306 | |
| 5275 | 307 T xelem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 308 { return xelem (compute_index (ra_idx)); } |
| 309 | |
| 5775 | 310 // FIXME -- would be nice to fix this so that we don't |
| 5164 | 311 // unnecessarily force a copy, but that is not so easy, and I see no |
| 312 // clean way to do it. | |
| 313 | |
| 5275 | 314 T& checkelem (octave_idx_type n) |
| 5164 | 315 { |
| 316 if (n < 0 || n >= numel ()) | |
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317 return range_error ("T& Sparse<T>::checkelem", n); |
| 5164 | 318 else |
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319 { |
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320 make_unique (); |
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321 return xelem (n); |
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322 } |
| 5164 | 323 } |
| 324 | |
| 5275 | 325 T& checkelem (octave_idx_type i, octave_idx_type j) |
| 5164 | 326 { |
| 327 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) | |
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328 return range_error ("T& Sparse<T>::checkelem", i, j); |
| 5164 | 329 else |
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330 { |
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331 make_unique (); |
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332 return xelem (i, j); |
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333 } |
| 5164 | 334 } |
| 335 | |
| 5275 | 336 T& checkelem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 337 { |
| 5275 | 338 octave_idx_type i = compute_index (ra_idx); |
| 5164 | 339 |
| 340 if (i < 0) | |
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341 return range_error ("T& Sparse<T>::checkelem", ra_idx); |
| 5164 | 342 else |
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343 return elem (i); |
| 5164 | 344 } |
| 345 | |
| 5275 | 346 T& elem (octave_idx_type n) |
| 5164 | 347 { |
| 348 make_unique (); | |
| 349 return xelem (n); | |
| 350 } | |
| 351 | |
| 5275 | 352 T& elem (octave_idx_type i, octave_idx_type j) |
| 5164 | 353 { |
| 354 make_unique (); | |
| 355 return xelem (i, j); | |
| 356 } | |
| 357 | |
| 5275 | 358 T& elem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 359 { return Sparse<T>::elem (compute_index (ra_idx)); } |
| 360 | |
| 361 #if defined (BOUNDS_CHECKING) | |
| 5275 | 362 T& operator () (octave_idx_type n) { return checkelem (n); } |
| 363 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); } | |
| 364 T& operator () (const Array<octave_idx_type>& ra_idx) { return checkelem (ra_idx); } | |
| 5164 | 365 #else |
| 5275 | 366 T& operator () (octave_idx_type n) { return elem (n); } |
| 367 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); } | |
| 368 T& operator () (const Array<octave_idx_type>& ra_idx) { return elem (ra_idx); } | |
| 5164 | 369 #endif |
| 370 | |
| 5275 | 371 T checkelem (octave_idx_type n) const |
| 5164 | 372 { |
| 373 if (n < 0 || n >= numel ()) | |
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374 return range_error ("T Sparse<T>::checkelem", n); |
| 5164 | 375 else |
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376 return xelem (n); |
| 5164 | 377 } |
| 378 | |
| 5275 | 379 T checkelem (octave_idx_type i, octave_idx_type j) const |
| 5164 | 380 { |
| 381 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) | |
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382 return range_error ("T Sparse<T>::checkelem", i, j); |
| 5164 | 383 else |
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384 return xelem (i, j); |
| 5164 | 385 } |
| 386 | |
| 5275 | 387 T checkelem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 388 { |
| 5275 | 389 octave_idx_type i = compute_index (ra_idx); |
| 5164 | 390 |
| 391 if (i < 0) | |
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392 return range_error ("T Sparse<T>::checkelem", ra_idx); |
| 5164 | 393 else |
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394 return Sparse<T>::elem (i); |
| 5164 | 395 } |
| 396 | |
| 5275 | 397 T elem (octave_idx_type n) const { return xelem (n); } |
| 5164 | 398 |
| 5275 | 399 T elem (octave_idx_type i, octave_idx_type j) const { return xelem (i, j); } |
| 5164 | 400 |
| 5275 | 401 T elem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 402 { return Sparse<T>::elem (compute_index (ra_idx)); } |
| 403 | |
| 404 #if defined (BOUNDS_CHECKING) | |
| 5275 | 405 T operator () (octave_idx_type n) const { return checkelem (n); } |
| 406 T operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); } | |
| 407 T operator () (const Array<octave_idx_type>& ra_idx) const { return checkelem (ra_idx); } | |
| 5164 | 408 #else |
| 5275 | 409 T operator () (octave_idx_type n) const { return elem (n); } |
| 410 T operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); } | |
| 411 T operator () (const Array<octave_idx_type>& ra_idx) const { return elem (ra_idx); } | |
| 5164 | 412 #endif |
| 413 | |
| 414 Sparse<T> maybe_compress (bool remove_zeros = false) | |
| 415 { rep->maybe_compress (remove_zeros); return (*this); } | |
| 416 | |
| 417 Sparse<T> reshape (const dim_vector& new_dims) const; | |
| 418 | |
| 5275 | 419 Sparse<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const; |
| 5164 | 420 |
| 5275 | 421 Sparse<T> ipermute (const Array<octave_idx_type>& vec) const |
| 5164 | 422 { return permute (vec, true); } |
| 423 | |
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424 void resize1 (octave_idx_type n); |
| 5164 | 425 |
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426 void resize (octave_idx_type r, octave_idx_type c); |
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427 |
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428 void resize (const dim_vector& dv); |
| 5164 | 429 |
| 5275 | 430 void change_capacity (octave_idx_type nz) { rep->change_length (nz); } |
| 5164 | 431 |
| 5275 | 432 Sparse<T>& insert (const Sparse<T>& a, octave_idx_type r, octave_idx_type c); |
| 433 Sparse<T>& insert (const Sparse<T>& a, const Array<octave_idx_type>& idx); | |
| 5164 | 434 |
| 435 bool is_square (void) const { return (dim1 () == dim2 ()); } | |
| 436 | |
| 437 bool is_empty (void) const { return (rows () < 1 && cols () < 1); } | |
| 438 | |
| 439 Sparse<T> transpose (void) const; | |
| 440 | |
| 441 T* data (void) { make_unique (); return rep->d; } | |
| 5275 | 442 T& data (octave_idx_type i) { make_unique (); return rep->data (i); } |
| 5164 | 443 T* xdata (void) { return rep->d; } |
| 5275 | 444 T& xdata (octave_idx_type i) { return rep->data (i); } |
| 5164 | 445 |
| 5275 | 446 T data (octave_idx_type i) const { return rep->data (i); } |
| 5900 | 447 // FIXME -- shouldn't this be returning const T*? |
| 5164 | 448 T* data (void) const { return rep->d; } |
| 449 | |
| 5275 | 450 octave_idx_type* ridx (void) { make_unique (); return rep->r; } |
| 451 octave_idx_type& ridx (octave_idx_type i) { make_unique (); return rep->ridx (i); } | |
| 452 octave_idx_type* xridx (void) { return rep->r; } | |
| 453 octave_idx_type& xridx (octave_idx_type i) { return rep->ridx (i); } | |
| 5164 | 454 |
| 5275 | 455 octave_idx_type ridx (octave_idx_type i) const { return rep->cridx (i); } |
| 5900 | 456 // FIXME -- shouldn't this be returning const octave_idx_type*? |
| 5275 | 457 octave_idx_type* ridx (void) const { return rep->r; } |
| 5164 | 458 |
| 5275 | 459 octave_idx_type* cidx (void) { make_unique (); return rep->c; } |
| 460 octave_idx_type& cidx (octave_idx_type i) { make_unique (); return rep->cidx (i); } | |
| 461 octave_idx_type* xcidx (void) { return rep->c; } | |
| 462 octave_idx_type& xcidx (octave_idx_type i) { return rep->cidx (i); } | |
| 5164 | 463 |
| 5275 | 464 octave_idx_type cidx (octave_idx_type i) const { return rep->ccidx (i); } |
| 5900 | 465 // FIXME -- shouldn't this be returning const octave_idx_type*? |
| 5275 | 466 octave_idx_type* cidx (void) const { return rep->c; } |
| 5164 | 467 |
| 5275 | 468 octave_idx_type ndims (void) const { return dimensions.length (); } |
| 5164 | 469 |
| 470 void clear_index (void); | |
| 471 | |
| 472 void set_index (const idx_vector& i); | |
| 473 | |
| 5275 | 474 octave_idx_type index_count (void) const { return idx_count; } |
| 5164 | 475 |
| 476 idx_vector *get_idx (void) const { return idx; } | |
| 477 | |
| 478 void maybe_delete_elements (idx_vector& i); | |
| 479 | |
| 480 void maybe_delete_elements (idx_vector& i, idx_vector& j); | |
| 481 | |
| 482 void maybe_delete_elements (Array<idx_vector>& ra_idx); | |
| 483 | |
| 484 Sparse<T> value (void); | |
| 485 | |
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486 Sparse<T> index (const idx_vector& i, bool resize_ok = false) const; |
| 5164 | 487 |
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488 Sparse<T> index (const idx_vector& i, const idx_vector& j, bool resize_ok = false) const; |
| 5164 | 489 |
| 490 void print_info (std::ostream& os, const std::string& prefix) const; | |
| 491 | |
| 5900 | 492 // Unsafe. These functions exist to support the MEX interface. |
| 493 // You should not use them anywhere else. | |
| 494 void *mex_get_data (void) const { return const_cast<T *> (data ()); } | |
| 495 | |
| 496 octave_idx_type *mex_get_ir (void) const { return const_cast<octave_idx_type *> (ridx ()); } | |
| 497 | |
| 498 octave_idx_type *mex_get_jc (void) const { return const_cast<octave_idx_type *> (cidx ()); } | |
| 7433 | 499 |
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500 Sparse<T> sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const; |
| 7433 | 501 Sparse<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0, |
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502 sortmode mode = ASCENDING) const; |
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503 |
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504 Sparse<T> diag (octave_idx_type k = 0) const; |
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505 |
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506 Array<T> array_value (void) const; |
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507 |
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508 template <class U, class F> |
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509 Sparse<U> |
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510 map (F fcn) const |
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511 { |
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512 Sparse<U> result; |
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513 U f_zero = fcn (0.); |
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514 |
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515 if (f_zero != 0.) |
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516 { |
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517 octave_idx_type nr = rows (); |
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518 octave_idx_type nc = cols (); |
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519 |
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520 result = Sparse<U> (nr, nc, f_zero); |
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521 |
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522 for (octave_idx_type j = 0; j < nc; j++) |
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523 for (octave_idx_type i = cidx(j); i < cidx (j+1); i++) |
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524 { |
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525 octave_quit (); |
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526 /* Use data instead of elem for better performance. */ |
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527 result.data (ridx (i) + j * nr) = fcn (data(i)); |
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528 } |
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529 |
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530 result.maybe_compress (true); |
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531 } |
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532 else |
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533 { |
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534 octave_idx_type nz = nnz (); |
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535 octave_idx_type nr = rows (); |
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536 octave_idx_type nc = cols (); |
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537 |
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538 result = Sparse<U> (nr, nc, nz); |
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539 octave_idx_type ii = 0; |
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540 result.cidx (ii) = 0; |
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541 |
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542 for (octave_idx_type j = 0; j < nc; j++) |
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543 { |
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544 for (octave_idx_type i = cidx(j); i < cidx (j+1); i++) |
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545 { |
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546 U val = fcn (data (i)); |
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547 if (val != 0.0) |
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548 { |
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549 result.data (ii) = val; |
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550 result.ridx (ii++) = ridx (i); |
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551 } |
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552 octave_quit (); |
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553 } |
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554 result.cidx (j+1) = ii; |
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555 } |
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556 |
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557 result.maybe_compress (false); |
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558 } |
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559 |
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560 return result; |
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561 } |
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562 |
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563 // Overloads for function references. |
|
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564 template <class U> |
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565 Sparse<U> |
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566 map (U (&fcn) (T)) const |
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567 { return map<U, U (&) (T)> (fcn); } |
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568 |
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569 template <class U> |
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570 Sparse<U> |
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571 map (U (&fcn) (const T&)) const |
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572 { return map<U, U (&) (const T&)> (fcn); } |
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573 |
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574 bool indices_ok (void) const { return rep->indices_ok (); } |
| 5164 | 575 }; |
| 576 | |
| 577 // NOTE: these functions should be friends of the Sparse<T> class and | |
| 578 // Sparse<T>::dimensions should be protected, not public, but we can't | |
| 579 // do that because of bugs in gcc prior to 3.3. | |
| 580 | |
| 581 template <class LT, class RT> | |
| 582 /* friend */ int | |
| 583 assign (Sparse<LT>& lhs, const Sparse<RT>& rhs); | |
| 584 | |
| 585 template <class LT, class RT> | |
| 586 /* friend */ int | |
| 587 assign1 (Sparse<LT>& lhs, const Sparse<RT>& rhs); | |
| 588 | |
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589 template<typename T> |
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590 std::istream& |
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591 read_sparse_matrix (std::istream& is, Sparse<T>& a, |
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592 T (*read_fcn) (std::istream&)) |
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593 { |
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594 octave_idx_type nr = a.rows (); |
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595 octave_idx_type nc = a.cols (); |
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596 octave_idx_type nz = a.nzmax (); |
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597 |
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598 if (nr > 0 && nc > 0) |
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599 { |
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600 octave_idx_type itmp; |
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601 octave_idx_type jtmp; |
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602 octave_idx_type iold = 0; |
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603 octave_idx_type jold = 0; |
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604 octave_idx_type ii = 0; |
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605 T tmp; |
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606 |
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607 a.cidx (0) = 0; |
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608 for (octave_idx_type i = 0; i < nz; i++) |
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609 { |
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610 itmp = 0; jtmp = 0; |
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611 is >> itmp; |
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612 itmp--; |
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613 |
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614 is >> jtmp; |
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615 jtmp--; |
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616 |
|
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617 if (itmp < 0 || itmp >= nr) |
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618 { |
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619 (*current_liboctave_error_handler) |
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620 ("invalid sparse matrix: row index = %d out of range", |
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621 itmp + 1); |
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622 is.setstate (std::ios::failbit); |
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|
623 goto done; |
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|
624 } |
|
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|
625 |
|
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626 if (jtmp < 0 || jtmp >= nc) |
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|
627 { |
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|
628 (*current_liboctave_error_handler) |
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629 ("invalid sparse matrix: column index = %d out of range", |
|
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630 jtmp + 1); |
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|
631 is.setstate (std::ios::failbit); |
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|
632 goto done; |
|
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|
633 } |
|
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|
634 |
|
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|
635 if (jtmp < jold) |
|
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|
636 { |
|
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|
637 (*current_liboctave_error_handler) |
|
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|
638 ("invalid sparse matrix: column indices must appear in ascending order"); |
|
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|
639 is.setstate (std::ios::failbit); |
|
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|
640 goto done; |
|
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|
641 } |
|
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|
642 else if (jtmp > jold) |
|
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|
643 { |
|
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|
644 for (octave_idx_type j = jold; j < jtmp; j++) |
|
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|
645 a.cidx(j+1) = ii; |
|
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|
646 } |
|
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|
647 else if (itmp < iold) |
|
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|
648 { |
|
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|
649 (*current_liboctave_error_handler) |
|
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|
650 ("invalid sparse matrix: row indices must appear in ascending order in each column"); |
|
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|
651 is.setstate (std::ios::failbit); |
|
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changeset
|
652 goto done; |
|
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|
653 } |
|
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|
654 |
|
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|
655 iold = itmp; |
|
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|
656 jold = jtmp; |
|
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|
657 |
|
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|
658 tmp = read_fcn (is); |
|
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|
659 |
|
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|
660 if (is) |
|
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|
661 { |
|
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|
662 a.data (ii) = tmp; |
|
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663 a.ridx (ii++) = itmp; |
|
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664 } |
|
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|
665 else |
|
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|
666 goto done; |
|
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|
667 } |
|
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|
668 |
|
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|
669 for (octave_idx_type j = jold; j < nc; j++) |
|
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670 a.cidx(j+1) = ii; |
|
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|
671 } |
|
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|
672 |
|
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diff
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|
673 done: |
|
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|
674 |
|
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|
675 return is; |
|
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|
676 } |
|
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|
677 |
| 6708 | 678 #define INSTANTIATE_SPARSE_ASSIGN(LT, RT, API) \ |
| 679 template API int assign (Sparse<LT>&, const Sparse<RT>&); \ | |
| 680 template API int assign1 (Sparse<LT>&, const Sparse<RT>&); | |
| 5164 | 681 |
| 6708 | 682 #define INSTANTIATE_SPARSE(T, API) \ |
| 683 template class API Sparse<T>; | |
| 5164 | 684 |
| 6708 | 685 #define INSTANTIATE_SPARSE_AND_ASSIGN(T, API) \ |
| 686 INSTANTIATE_SPARSE (T, API); \ | |
| 687 INSTANTIATE_SPARSE_ASSIGN (T, T, API) | |
| 5164 | 688 |
| 689 #endif |