Mercurial > octave
annotate liboctave/Sparse.h @ 10515:189274f6c7c4
omissions from last patch
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Tue, 13 Apr 2010 14:56:29 +0200 |
| parents | 40c58502a78b |
| children | 4d1fc073fbb7 |
| rev | line source |
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| 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> |
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32 #include <algorithm> |
| 5164 | 33 |
| 34 #include "Array.h" | |
| 35 #include "dim-vector.h" | |
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36 #include "lo-error.h" |
| 5164 | 37 #include "lo-utils.h" |
| 38 | |
| 7433 | 39 #include "oct-sort.h" |
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40 #include "oct-mem.h" |
| 7433 | 41 |
| 5164 | 42 class idx_vector; |
| 43 | |
| 44 // Two dimensional sparse class. Handles the reference counting for | |
| 45 // all the derived classes. | |
| 46 | |
| 47 template <class T> | |
| 48 class | |
| 49 Sparse | |
| 50 { | |
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51 public: |
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52 |
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53 typedef T element_type; |
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54 |
| 5164 | 55 protected: |
| 56 //-------------------------------------------------------------------- | |
| 57 // The real representation of all Sparse arrays. | |
| 58 //-------------------------------------------------------------------- | |
| 59 | |
| 6108 | 60 class OCTAVE_API SparseRep |
| 5164 | 61 { |
| 62 public: | |
| 63 | |
| 64 T *d; | |
| 5275 | 65 octave_idx_type *r; |
| 66 octave_idx_type *c; | |
| 5604 | 67 octave_idx_type nzmx; |
| 5275 | 68 octave_idx_type nrows; |
| 69 octave_idx_type ncols; | |
| 5164 | 70 int count; |
| 71 | |
| 5604 | 72 SparseRep (void) : d (0), r (0), c (new octave_idx_type [1]), nzmx (0), nrows (0), |
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73 ncols (0), count (1) { c[0] = 0; } |
| 5164 | 74 |
| 5604 | 75 SparseRep (octave_idx_type n) : d (0), r (0), c (new octave_idx_type [n+1]), nzmx (0), nrows (n), |
| 5164 | 76 ncols (n), count (1) |
| 77 { | |
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78 for (octave_idx_type i = 0; i < n + 1; i++) |
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79 c[i] = 0; |
| 5164 | 80 } |
| 81 | |
| 5604 | 82 SparseRep (octave_idx_type nr, octave_idx_type nc) : d (0), r (0), c (new octave_idx_type [nc+1]), nzmx (0), |
| 5164 | 83 nrows (nr), ncols (nc), count (1) |
| 84 { | |
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85 for (octave_idx_type i = 0; i < nc + 1; i++) |
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86 c[i] = 0; |
| 5164 | 87 } |
| 88 | |
| 5275 | 89 SparseRep (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz) : d (new T [nz]), |
| 5604 | 90 r (new octave_idx_type [nz]), c (new octave_idx_type [nc+1]), nzmx (nz), nrows (nr), |
| 5164 | 91 ncols (nc), count (1) |
| 92 { | |
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93 for (octave_idx_type i = 0; i < nc + 1; i++) |
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94 c[i] = 0; |
| 5164 | 95 } |
| 96 | |
| 97 SparseRep (const SparseRep& a) | |
| 5604 | 98 : d (new T [a.nzmx]), r (new octave_idx_type [a.nzmx]), c (new octave_idx_type [a.ncols + 1]), |
| 99 nzmx (a.nzmx), nrows (a.nrows), ncols (a.ncols), count (1) | |
| 5164 | 100 { |
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101 octave_idx_type nz = a.nnz (); |
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102 copy_or_memcpy (nz, a.d, d); |
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103 copy_or_memcpy (nz, a.r, r); |
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104 copy_or_memcpy (ncols + 1, a.c, c); |
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105 } |
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106 |
| 5164 | 107 ~SparseRep (void) { delete [] d; delete [] r; delete [] c; } |
| 108 | |
| 5604 | 109 octave_idx_type length (void) const { return nzmx; } |
| 5164 | 110 |
| 5604 | 111 octave_idx_type nnz (void) const { return c [ncols]; } |
| 5164 | 112 |
| 5275 | 113 T& elem (octave_idx_type _r, octave_idx_type _c); |
| 5164 | 114 |
| 5275 | 115 T celem (octave_idx_type _r, octave_idx_type _c) const; |
| 5164 | 116 |
| 5275 | 117 T& data (octave_idx_type i) { return d[i]; } |
| 5164 | 118 |
| 5275 | 119 T cdata (octave_idx_type i) const { return d[i]; } |
| 5164 | 120 |
| 5275 | 121 octave_idx_type& ridx (octave_idx_type i) { return r[i]; } |
| 5164 | 122 |
| 5275 | 123 octave_idx_type cridx (octave_idx_type i) const { return r[i]; } |
| 5164 | 124 |
| 5275 | 125 octave_idx_type& cidx (octave_idx_type i) { return c[i]; } |
| 5164 | 126 |
| 5275 | 127 octave_idx_type ccidx (octave_idx_type i) const { return c[i]; } |
| 5164 | 128 |
| 129 void maybe_compress (bool remove_zeros); | |
| 130 | |
| 5275 | 131 void change_length (octave_idx_type nz); |
| 5164 | 132 |
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133 bool indices_ok (void) const; |
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134 |
| 5164 | 135 private: |
| 136 | |
| 137 // No assignment! | |
| 138 | |
| 139 SparseRep& operator = (const SparseRep& a); | |
| 140 }; | |
| 141 | |
| 142 //-------------------------------------------------------------------- | |
| 143 | |
| 144 void make_unique (void) | |
| 145 { | |
| 146 if (rep->count > 1) | |
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147 { |
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148 --rep->count; |
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149 rep = new SparseRep (*rep); |
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150 } |
| 5164 | 151 } |
| 152 | |
| 153 public: | |
| 154 | |
| 155 // !!! WARNING !!! -- these should be protected, not public. You | |
| 156 // should not access these data members directly! | |
| 157 | |
| 158 typename Sparse<T>::SparseRep *rep; | |
| 159 | |
| 160 dim_vector dimensions; | |
| 161 | |
| 162 private: | |
| 163 | |
| 164 typename Sparse<T>::SparseRep *nil_rep (void) const | |
| 165 { | |
| 166 static typename Sparse<T>::SparseRep *nr | |
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167 = new typename Sparse<T>::SparseRep (); |
| 5164 | 168 |
| 169 nr->count++; | |
| 170 | |
| 171 return nr; | |
| 172 } | |
| 173 | |
| 174 public: | |
| 175 | |
| 176 Sparse (void) | |
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177 : rep (nil_rep ()), dimensions (dim_vector(0,0)) { } |
| 5164 | 178 |
| 5275 | 179 explicit Sparse (octave_idx_type n) |
| 5164 | 180 : rep (new typename Sparse<T>::SparseRep (n)), |
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181 dimensions (dim_vector (n, n)) { } |
| 5164 | 182 |
| 5275 | 183 explicit Sparse (octave_idx_type nr, octave_idx_type nc) |
| 5164 | 184 : rep (new typename Sparse<T>::SparseRep (nr, nc)), |
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185 dimensions (dim_vector (nr, nc)) { } |
| 5164 | 186 |
| 5275 | 187 explicit Sparse (octave_idx_type nr, octave_idx_type nc, T val); |
| 5164 | 188 |
| 5275 | 189 Sparse (const dim_vector& dv, octave_idx_type nz) |
| 5164 | 190 : rep (new typename Sparse<T>::SparseRep (dv(0), dv(1), nz)), |
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191 dimensions (dv) { } |
| 5164 | 192 |
| 5275 | 193 Sparse (octave_idx_type nr, octave_idx_type nc, octave_idx_type nz) |
| 5164 | 194 : rep (new typename Sparse<T>::SparseRep (nr, nc, nz)), |
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195 dimensions (dim_vector (nr, nc)) { } |
| 5164 | 196 |
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197 // Type conversion case. Preserves capacity (). |
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198 template <class U> |
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199 Sparse (const Sparse<U>& a) |
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200 : rep (new typename Sparse<T>::SparseRep (a.rep->nrows, a.rep->ncols, a.rep->nzmx)), |
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201 dimensions (a.dimensions) |
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202 { |
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203 octave_idx_type nz = a.nnz (); |
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204 std::copy (a.rep->d, a.rep->d + nz, rep->d); |
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205 copy_or_memcpy (nz, a.rep->r, rep->r); |
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206 copy_or_memcpy (rep->ncols + 1, a.rep->c, rep->c); |
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207 } |
| 5164 | 208 |
| 209 // No type conversion case. | |
| 210 Sparse (const Sparse<T>& a) | |
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211 : rep (a.rep), dimensions (a.dimensions) |
| 5164 | 212 { |
| 213 rep->count++; | |
| 214 } | |
| 215 | |
| 216 public: | |
| 217 | |
| 218 Sparse (const dim_vector& dv); | |
| 219 | |
| 220 Sparse (const Sparse<T>& a, const dim_vector& dv); | |
| 221 | |
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222 Sparse (const Array<T>& a, const idx_vector& r, const idx_vector& c, |
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223 octave_idx_type nr = -1, octave_idx_type nc = -1, bool sum_terms = true); |
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224 |
| 5164 | 225 // Sparsify a normal matrix |
| 226 Sparse (const Array<T>& a); | |
| 227 | |
| 228 virtual ~Sparse (void); | |
| 229 | |
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230 Sparse<T>& operator = (const Sparse<T>& a); |
| 5164 | 231 |
| 5604 | 232 // Note that nzmax and capacity are the amount of storage for |
| 233 // non-zero elements, while nnz is the actual number of non-zero | |
| 234 // terms. | |
| 235 octave_idx_type nzmax (void) const { return rep->length (); } | |
| 236 octave_idx_type capacity (void) const { return nzmax (); } | |
| 237 octave_idx_type nnz (void) const { return rep->nnz (); } | |
| 5164 | 238 |
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239 // Querying the number of elements (incl. zeros) may overflow the index type, |
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240 // so don't do it unless you really need it. |
| 5275 | 241 octave_idx_type numel (void) const |
| 5164 | 242 { |
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243 return dimensions.safe_numel (); |
| 5164 | 244 } |
| 245 | |
| 5275 | 246 octave_idx_type nelem (void) const { return capacity (); } |
| 247 octave_idx_type length (void) const { return numel (); } | |
| 5164 | 248 |
| 5275 | 249 octave_idx_type dim1 (void) const { return dimensions(0); } |
| 250 octave_idx_type dim2 (void) const { return dimensions(1); } | |
| 5164 | 251 |
| 5275 | 252 octave_idx_type rows (void) const { return dim1 (); } |
| 253 octave_idx_type cols (void) const { return dim2 (); } | |
| 254 octave_idx_type columns (void) const { return dim2 (); } | |
| 5164 | 255 |
| 5275 | 256 octave_idx_type get_row_index (octave_idx_type k) { return ridx (k); } |
| 257 octave_idx_type get_col_index (octave_idx_type k) | |
| 5164 | 258 { |
| 5275 | 259 octave_idx_type ret = 0; |
| 5164 | 260 while (cidx(ret+1) < k) |
| 261 ret++; | |
| 262 return ret; | |
| 263 } | |
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264 |
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265 size_t byte_size (void) const |
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266 { |
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267 return (static_cast<size_t>(cols () + 1) * sizeof (octave_idx_type) |
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268 + static_cast<size_t> (capacity ()) * (sizeof (T) + sizeof (octave_idx_type))); |
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269 } |
| 5164 | 270 |
| 271 dim_vector dims (void) const { return dimensions; } | |
| 272 | |
| 273 Sparse<T> squeeze (void) const { return *this; } | |
| 274 | |
| 5275 | 275 octave_idx_type compute_index (const Array<octave_idx_type>& ra_idx) const; |
| 5164 | 276 |
| 5275 | 277 T range_error (const char *fcn, octave_idx_type n) const; |
| 278 T& range_error (const char *fcn, octave_idx_type n); | |
| 5164 | 279 |
| 5275 | 280 T range_error (const char *fcn, octave_idx_type i, octave_idx_type j) const; |
| 281 T& range_error (const char *fcn, octave_idx_type i, octave_idx_type j); | |
| 5164 | 282 |
| 5275 | 283 T range_error (const char *fcn, const Array<octave_idx_type>& ra_idx) const; |
| 284 T& range_error (const char *fcn, const Array<octave_idx_type>& ra_idx); | |
| 5164 | 285 |
| 286 // No checking, even for multiple references, ever. | |
| 287 | |
| 5275 | 288 T& xelem (octave_idx_type n) |
| 5164 | 289 { |
| 5275 | 290 octave_idx_type i = n % rows (), j = n / rows(); |
| 5164 | 291 return xelem (i, j); |
| 292 } | |
| 293 | |
| 5275 | 294 T xelem (octave_idx_type n) const |
| 5164 | 295 { |
| 5275 | 296 octave_idx_type i = n % rows (), j = n / rows(); |
| 5164 | 297 return xelem (i, j); |
| 298 } | |
| 299 | |
| 5275 | 300 T& xelem (octave_idx_type i, octave_idx_type j) { return rep->elem (i, j); } |
| 301 T xelem (octave_idx_type i, octave_idx_type j) const { return rep->celem (i, j); } | |
| 5164 | 302 |
| 5275 | 303 T& xelem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 304 { return xelem (compute_index (ra_idx)); } |
| 305 | |
| 5275 | 306 T xelem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 307 { return xelem (compute_index (ra_idx)); } |
| 308 | |
| 5775 | 309 // FIXME -- would be nice to fix this so that we don't |
| 5164 | 310 // unnecessarily force a copy, but that is not so easy, and I see no |
| 311 // clean way to do it. | |
| 312 | |
| 5275 | 313 T& checkelem (octave_idx_type n) |
| 5164 | 314 { |
| 315 if (n < 0 || n >= numel ()) | |
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316 return range_error ("T& Sparse<T>::checkelem", n); |
| 5164 | 317 else |
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318 { |
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319 make_unique (); |
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320 return xelem (n); |
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321 } |
| 5164 | 322 } |
| 323 | |
| 5275 | 324 T& checkelem (octave_idx_type i, octave_idx_type j) |
| 5164 | 325 { |
| 326 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) | |
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327 return range_error ("T& Sparse<T>::checkelem", i, j); |
| 5164 | 328 else |
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329 { |
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330 make_unique (); |
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331 return xelem (i, j); |
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332 } |
| 5164 | 333 } |
| 334 | |
| 5275 | 335 T& checkelem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 336 { |
| 5275 | 337 octave_idx_type i = compute_index (ra_idx); |
| 5164 | 338 |
| 339 if (i < 0) | |
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340 return range_error ("T& Sparse<T>::checkelem", ra_idx); |
| 5164 | 341 else |
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342 return elem (i); |
| 5164 | 343 } |
| 344 | |
| 5275 | 345 T& elem (octave_idx_type n) |
| 5164 | 346 { |
| 347 make_unique (); | |
| 348 return xelem (n); | |
| 349 } | |
| 350 | |
| 5275 | 351 T& elem (octave_idx_type i, octave_idx_type j) |
| 5164 | 352 { |
| 353 make_unique (); | |
| 354 return xelem (i, j); | |
| 355 } | |
| 356 | |
| 5275 | 357 T& elem (const Array<octave_idx_type>& ra_idx) |
| 5164 | 358 { return Sparse<T>::elem (compute_index (ra_idx)); } |
| 359 | |
| 360 #if defined (BOUNDS_CHECKING) | |
| 5275 | 361 T& operator () (octave_idx_type n) { return checkelem (n); } |
| 362 T& operator () (octave_idx_type i, octave_idx_type j) { return checkelem (i, j); } | |
| 363 T& operator () (const Array<octave_idx_type>& ra_idx) { return checkelem (ra_idx); } | |
| 5164 | 364 #else |
| 5275 | 365 T& operator () (octave_idx_type n) { return elem (n); } |
| 366 T& operator () (octave_idx_type i, octave_idx_type j) { return elem (i, j); } | |
| 367 T& operator () (const Array<octave_idx_type>& ra_idx) { return elem (ra_idx); } | |
| 5164 | 368 #endif |
| 369 | |
| 5275 | 370 T checkelem (octave_idx_type n) const |
| 5164 | 371 { |
| 372 if (n < 0 || n >= numel ()) | |
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373 return range_error ("T Sparse<T>::checkelem", n); |
| 5164 | 374 else |
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375 return xelem (n); |
| 5164 | 376 } |
| 377 | |
| 5275 | 378 T checkelem (octave_idx_type i, octave_idx_type j) const |
| 5164 | 379 { |
| 380 if (i < 0 || j < 0 || i >= dim1 () || j >= dim2 ()) | |
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381 return range_error ("T Sparse<T>::checkelem", i, j); |
| 5164 | 382 else |
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383 return xelem (i, j); |
| 5164 | 384 } |
| 385 | |
| 5275 | 386 T checkelem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 387 { |
| 5275 | 388 octave_idx_type i = compute_index (ra_idx); |
| 5164 | 389 |
| 390 if (i < 0) | |
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391 return range_error ("T Sparse<T>::checkelem", ra_idx); |
| 5164 | 392 else |
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393 return Sparse<T>::elem (i); |
| 5164 | 394 } |
| 395 | |
| 5275 | 396 T elem (octave_idx_type n) const { return xelem (n); } |
| 5164 | 397 |
| 5275 | 398 T elem (octave_idx_type i, octave_idx_type j) const { return xelem (i, j); } |
| 5164 | 399 |
| 5275 | 400 T elem (const Array<octave_idx_type>& ra_idx) const |
| 5164 | 401 { return Sparse<T>::elem (compute_index (ra_idx)); } |
| 402 | |
| 403 #if defined (BOUNDS_CHECKING) | |
| 5275 | 404 T operator () (octave_idx_type n) const { return checkelem (n); } |
| 405 T operator () (octave_idx_type i, octave_idx_type j) const { return checkelem (i, j); } | |
| 406 T operator () (const Array<octave_idx_type>& ra_idx) const { return checkelem (ra_idx); } | |
| 5164 | 407 #else |
| 5275 | 408 T operator () (octave_idx_type n) const { return elem (n); } |
| 409 T operator () (octave_idx_type i, octave_idx_type j) const { return elem (i, j); } | |
| 410 T operator () (const Array<octave_idx_type>& ra_idx) const { return elem (ra_idx); } | |
| 5164 | 411 #endif |
| 412 | |
| 413 Sparse<T> maybe_compress (bool remove_zeros = false) | |
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414 { |
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415 if (remove_zeros) |
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416 make_unique (); // Needs to unshare because elements are removed. |
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417 |
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418 rep->maybe_compress (remove_zeros); |
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419 return (*this); |
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420 } |
| 5164 | 421 |
| 422 Sparse<T> reshape (const dim_vector& new_dims) const; | |
| 423 | |
| 5275 | 424 Sparse<T> permute (const Array<octave_idx_type>& vec, bool inv = false) const; |
| 5164 | 425 |
| 5275 | 426 Sparse<T> ipermute (const Array<octave_idx_type>& vec) const |
| 5164 | 427 { return permute (vec, true); } |
| 428 | |
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429 void resize1 (octave_idx_type n); |
| 5164 | 430 |
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431 void resize (octave_idx_type r, octave_idx_type c); |
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432 |
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433 void resize (const dim_vector& dv); |
| 5164 | 434 |
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435 void change_capacity (octave_idx_type nz) |
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436 { |
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437 if (nz < nnz ()) |
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438 make_unique (); // Unshare now because elements will be truncated. |
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439 rep->change_length (nz); |
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440 } |
| 5164 | 441 |
| 5275 | 442 Sparse<T>& insert (const Sparse<T>& a, octave_idx_type r, octave_idx_type c); |
| 443 Sparse<T>& insert (const Sparse<T>& a, const Array<octave_idx_type>& idx); | |
| 5164 | 444 |
| 445 bool is_square (void) const { return (dim1 () == dim2 ()); } | |
| 446 | |
| 447 bool is_empty (void) const { return (rows () < 1 && cols () < 1); } | |
| 448 | |
| 449 Sparse<T> transpose (void) const; | |
| 450 | |
| 451 T* data (void) { make_unique (); return rep->d; } | |
| 5275 | 452 T& data (octave_idx_type i) { make_unique (); return rep->data (i); } |
| 5164 | 453 T* xdata (void) { return rep->d; } |
| 5275 | 454 T& xdata (octave_idx_type i) { return rep->data (i); } |
| 5164 | 455 |
| 5275 | 456 T data (octave_idx_type i) const { return rep->data (i); } |
| 5900 | 457 // FIXME -- shouldn't this be returning const T*? |
| 5164 | 458 T* data (void) const { return rep->d; } |
| 459 | |
| 5275 | 460 octave_idx_type* ridx (void) { make_unique (); return rep->r; } |
| 461 octave_idx_type& ridx (octave_idx_type i) { make_unique (); return rep->ridx (i); } | |
| 462 octave_idx_type* xridx (void) { return rep->r; } | |
| 463 octave_idx_type& xridx (octave_idx_type i) { return rep->ridx (i); } | |
| 5164 | 464 |
| 5275 | 465 octave_idx_type ridx (octave_idx_type i) const { return rep->cridx (i); } |
| 5900 | 466 // FIXME -- shouldn't this be returning const octave_idx_type*? |
| 5275 | 467 octave_idx_type* ridx (void) const { return rep->r; } |
| 5164 | 468 |
| 5275 | 469 octave_idx_type* cidx (void) { make_unique (); return rep->c; } |
| 470 octave_idx_type& cidx (octave_idx_type i) { make_unique (); return rep->cidx (i); } | |
| 471 octave_idx_type* xcidx (void) { return rep->c; } | |
| 472 octave_idx_type& xcidx (octave_idx_type i) { return rep->cidx (i); } | |
| 5164 | 473 |
| 5275 | 474 octave_idx_type cidx (octave_idx_type i) const { return rep->ccidx (i); } |
| 5900 | 475 // FIXME -- shouldn't this be returning const octave_idx_type*? |
| 5275 | 476 octave_idx_type* cidx (void) const { return rep->c; } |
| 5164 | 477 |
| 5275 | 478 octave_idx_type ndims (void) const { return dimensions.length (); } |
| 5164 | 479 |
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480 void delete_elements (const idx_vector& i); |
| 5164 | 481 |
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482 void delete_elements (int dim, const idx_vector& i); |
| 5164 | 483 |
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484 void delete_elements (const idx_vector& i, const idx_vector& j); |
| 5164 | 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 |
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490 void assign (const idx_vector& i, const Sparse<T>& rhs); |
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491 |
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492 void assign (const idx_vector& i, const idx_vector& j, const Sparse<T>& rhs); |
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493 |
| 5164 | 494 void print_info (std::ostream& os, const std::string& prefix) const; |
| 495 | |
| 5900 | 496 // Unsafe. These functions exist to support the MEX interface. |
| 497 // You should not use them anywhere else. | |
| 498 void *mex_get_data (void) const { return const_cast<T *> (data ()); } | |
| 499 | |
| 500 octave_idx_type *mex_get_ir (void) const { return const_cast<octave_idx_type *> (ridx ()); } | |
| 501 | |
| 502 octave_idx_type *mex_get_jc (void) const { return const_cast<octave_idx_type *> (cidx ()); } | |
| 7433 | 503 |
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504 Sparse<T> sort (octave_idx_type dim = 0, sortmode mode = ASCENDING) const; |
| 7433 | 505 Sparse<T> sort (Array<octave_idx_type> &sidx, octave_idx_type dim = 0, |
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506 sortmode mode = ASCENDING) const; |
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507 |
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508 Sparse<T> diag (octave_idx_type k = 0) const; |
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509 |
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510 Array<T> array_value (void) const; |
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511 |
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512 template <class U, class F> |
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513 Sparse<U> |
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514 map (F fcn) const |
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515 { |
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516 Sparse<U> result; |
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517 U f_zero = fcn (0.); |
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518 |
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519 if (f_zero != 0.) |
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520 { |
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521 octave_idx_type nr = rows (); |
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522 octave_idx_type nc = cols (); |
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523 |
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524 result = Sparse<U> (nr, nc, f_zero); |
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525 |
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526 for (octave_idx_type j = 0; j < nc; j++) |
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527 for (octave_idx_type i = cidx(j); i < cidx (j+1); i++) |
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528 { |
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529 octave_quit (); |
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530 /* Use data instead of elem for better performance. */ |
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531 result.data (ridx (i) + j * nr) = fcn (data(i)); |
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532 } |
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533 |
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534 result.maybe_compress (true); |
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535 } |
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536 else |
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537 { |
|
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538 octave_idx_type nz = nnz (); |
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539 octave_idx_type nr = rows (); |
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540 octave_idx_type nc = cols (); |
|
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541 |
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542 result = Sparse<U> (nr, nc, nz); |
|
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543 octave_idx_type ii = 0; |
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544 result.cidx (ii) = 0; |
|
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545 |
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546 for (octave_idx_type j = 0; j < nc; j++) |
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547 { |
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548 for (octave_idx_type i = cidx(j); i < cidx (j+1); i++) |
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549 { |
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550 U val = fcn (data (i)); |
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551 if (val != 0.0) |
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552 { |
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553 result.data (ii) = val; |
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554 result.ridx (ii++) = ridx (i); |
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555 } |
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556 octave_quit (); |
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557 } |
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558 result.cidx (j+1) = ii; |
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559 } |
|
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560 |
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561 result.maybe_compress (false); |
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562 } |
|
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563 |
|
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|
564 return result; |
|
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|
565 } |
|
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|
566 |
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567 // Overloads for function references. |
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568 template <class U> |
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569 Sparse<U> |
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570 map (U (&fcn) (T)) const |
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571 { return map<U, U (&) (T)> (fcn); } |
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572 |
|
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573 template <class U> |
|
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574 Sparse<U> |
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575 map (U (&fcn) (const T&)) const |
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576 { return map<U, U (&) (const T&)> (fcn); } |
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577 |
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578 bool indices_ok (void) const { return rep->indices_ok (); } |
| 5164 | 579 }; |
| 580 | |
| 581 // NOTE: these functions should be friends of the Sparse<T> class and | |
| 582 // Sparse<T>::dimensions should be protected, not public, but we can't | |
| 583 // do that because of bugs in gcc prior to 3.3. | |
| 584 | |
| 585 template <class LT, class RT> | |
| 586 /* friend */ int | |
| 587 assign (Sparse<LT>& lhs, const Sparse<RT>& rhs); | |
| 588 | |
| 589 template <class LT, class RT> | |
| 590 /* friend */ int | |
| 591 assign1 (Sparse<LT>& lhs, const Sparse<RT>& rhs); | |
| 592 | |
|
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593 template<typename T> |
|
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|
594 std::istream& |
|
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595 read_sparse_matrix (std::istream& is, Sparse<T>& a, |
|
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596 T (*read_fcn) (std::istream&)) |
|
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597 { |
|
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598 octave_idx_type nr = a.rows (); |
|
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599 octave_idx_type nc = a.cols (); |
|
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600 octave_idx_type nz = a.nzmax (); |
|
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|
601 |
|
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|
602 if (nr > 0 && nc > 0) |
|
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|
603 { |
|
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changeset
|
604 octave_idx_type itmp; |
|
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|
605 octave_idx_type jtmp; |
|
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|
606 octave_idx_type iold = 0; |
|
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|
607 octave_idx_type jold = 0; |
|
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diff
changeset
|
608 octave_idx_type ii = 0; |
|
c6edba80dfae
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diff
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|
609 T tmp; |
|
c6edba80dfae
sanity checks for loading sparse matrices
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diff
changeset
|
610 |
|
c6edba80dfae
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diff
changeset
|
611 a.cidx (0) = 0; |
|
c6edba80dfae
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8950
diff
changeset
|
612 for (octave_idx_type i = 0; i < nz; i++) |
|
10312
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diff
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|
613 { |
|
9829
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fix loading sparse matrices
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|
614 itmp = 0; jtmp = 0; |
|
10312
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|
615 is >> itmp; |
|
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diff
changeset
|
616 itmp--; |
|
9469
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diff
changeset
|
617 |
|
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changeset
|
618 is >> jtmp; |
|
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diff
changeset
|
619 jtmp--; |
|
9469
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diff
changeset
|
620 |
|
10312
cbc402e64d83
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diff
changeset
|
621 if (itmp < 0 || itmp >= nr) |
|
cbc402e64d83
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diff
changeset
|
622 { |
|
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diff
changeset
|
623 (*current_liboctave_error_handler) |
|
cbc402e64d83
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diff
changeset
|
624 ("invalid sparse matrix: row index = %d out of range", |
|
cbc402e64d83
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John W. Eaton <jwe@octave.org>
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diff
changeset
|
625 itmp + 1); |
|
cbc402e64d83
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diff
changeset
|
626 is.setstate (std::ios::failbit); |
|
cbc402e64d83
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10158
diff
changeset
|
627 goto done; |
|
cbc402e64d83
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diff
changeset
|
628 } |
|
9469
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sanity checks for loading sparse matrices
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diff
changeset
|
629 |
|
10312
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changeset
|
630 if (jtmp < 0 || jtmp >= nc) |
|
cbc402e64d83
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diff
changeset
|
631 { |
|
cbc402e64d83
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diff
changeset
|
632 (*current_liboctave_error_handler) |
|
cbc402e64d83
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diff
changeset
|
633 ("invalid sparse matrix: column index = %d out of range", |
|
cbc402e64d83
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diff
changeset
|
634 jtmp + 1); |
|
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diff
changeset
|
635 is.setstate (std::ios::failbit); |
|
cbc402e64d83
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diff
changeset
|
636 goto done; |
|
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diff
changeset
|
637 } |
|
9469
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sanity checks for loading sparse matrices
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diff
changeset
|
638 |
|
10312
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diff
changeset
|
639 if (jtmp < jold) |
|
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diff
changeset
|
640 { |
|
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diff
changeset
|
641 (*current_liboctave_error_handler) |
|
cbc402e64d83
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diff
changeset
|
642 ("invalid sparse matrix: column indices must appear in ascending order"); |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
643 is.setstate (std::ios::failbit); |
|
cbc402e64d83
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diff
changeset
|
644 goto done; |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
645 } |
|
9829
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changeset
|
646 else if (jtmp > jold) |
|
8fd88cc36fa4
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diff
changeset
|
647 { |
|
8fd88cc36fa4
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9812
diff
changeset
|
648 for (octave_idx_type j = jold; j < jtmp; j++) |
|
8fd88cc36fa4
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Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
649 a.cidx(j+1) = ii; |
|
8fd88cc36fa4
fix loading sparse matrices
Jaroslav Hajek <highegg@gmail.com>
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diff
changeset
|
650 } |
|
8fd88cc36fa4
fix loading sparse matrices
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diff
changeset
|
651 else if (itmp < iold) |
|
10312
cbc402e64d83
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diff
changeset
|
652 { |
|
cbc402e64d83
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diff
changeset
|
653 (*current_liboctave_error_handler) |
|
cbc402e64d83
untabify liboctave header files
John W. Eaton <jwe@octave.org>
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diff
changeset
|
654 ("invalid sparse matrix: row indices must appear in ascending order in each column"); |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
655 is.setstate (std::ios::failbit); |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
656 goto done; |
|
cbc402e64d83
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10158
diff
changeset
|
657 } |
|
9829
8fd88cc36fa4
fix loading sparse matrices
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diff
changeset
|
658 |
|
10312
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diff
changeset
|
659 iold = itmp; |
|
9829
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diff
changeset
|
660 jold = jtmp; |
|
8fd88cc36fa4
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parents:
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diff
changeset
|
661 |
|
10312
cbc402e64d83
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diff
changeset
|
662 tmp = read_fcn (is); |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
663 |
|
cbc402e64d83
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diff
changeset
|
664 if (is) |
|
cbc402e64d83
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parents:
10158
diff
changeset
|
665 { |
|
cbc402e64d83
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diff
changeset
|
666 a.data (ii) = tmp; |
|
cbc402e64d83
untabify liboctave header files
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diff
changeset
|
667 a.ridx (ii++) = itmp; |
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668 } |
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669 else |
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670 goto done; |
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diff
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671 } |
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9469
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parents:
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672 |
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673 for (octave_idx_type j = jold; j < nc; j++) |
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10312
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674 a.cidx(j+1) = ii; |
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675 } |
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676 |
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677 done: |
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678 |
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|
679 return is; |
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|
680 } |
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681 |
| 5164 | 682 #endif |