1 | /* -*- mode: C++; indent-tabs-mode: nil; -*- |
---|
2 | * |
---|
3 | * This file is a part of LEMON, a generic C++ optimization library. |
---|
4 | * |
---|
5 | * Copyright (C) 2003-2011 |
---|
6 | * Egervary Jeno Kombinatorikus Optimalizalasi Kutatocsoport |
---|
7 | * (Egervary Research Group on Combinatorial Optimization, EGRES). |
---|
8 | * |
---|
9 | * Permission to use, modify and distribute this software is granted |
---|
10 | * provided that this copyright notice appears in all copies. For |
---|
11 | * precise terms see the accompanying LICENSE file. |
---|
12 | * |
---|
13 | * This software is provided "AS IS" with no warranty of any kind, |
---|
14 | * express or implied, and with no claim as to its suitability for any |
---|
15 | * purpose. |
---|
16 | * |
---|
17 | */ |
---|
18 | |
---|
19 | #include <lemon/clp.h> |
---|
20 | #include <coin/ClpSimplex.hpp> |
---|
21 | |
---|
22 | namespace lemon { |
---|
23 | |
---|
24 | ClpLp::ClpLp() { |
---|
25 | _prob = new ClpSimplex(); |
---|
26 | _init_temporals(); |
---|
27 | messageLevel(MESSAGE_NOTHING); |
---|
28 | } |
---|
29 | |
---|
30 | ClpLp::ClpLp(const ClpLp& other) { |
---|
31 | _prob = new ClpSimplex(*other._prob); |
---|
32 | rows = other.rows; |
---|
33 | cols = other.cols; |
---|
34 | _init_temporals(); |
---|
35 | messageLevel(MESSAGE_NOTHING); |
---|
36 | } |
---|
37 | |
---|
38 | ClpLp::~ClpLp() { |
---|
39 | delete _prob; |
---|
40 | _clear_temporals(); |
---|
41 | } |
---|
42 | |
---|
43 | void ClpLp::_init_temporals() { |
---|
44 | _primal_ray = 0; |
---|
45 | _dual_ray = 0; |
---|
46 | } |
---|
47 | |
---|
48 | void ClpLp::_clear_temporals() { |
---|
49 | if (_primal_ray) { |
---|
50 | delete[] _primal_ray; |
---|
51 | _primal_ray = 0; |
---|
52 | } |
---|
53 | if (_dual_ray) { |
---|
54 | delete[] _dual_ray; |
---|
55 | _dual_ray = 0; |
---|
56 | } |
---|
57 | } |
---|
58 | |
---|
59 | ClpLp* ClpLp::newSolver() const { |
---|
60 | ClpLp* newlp = new ClpLp; |
---|
61 | return newlp; |
---|
62 | } |
---|
63 | |
---|
64 | ClpLp* ClpLp::cloneSolver() const { |
---|
65 | ClpLp* copylp = new ClpLp(*this); |
---|
66 | return copylp; |
---|
67 | } |
---|
68 | |
---|
69 | const char* ClpLp::_solverName() const { return "ClpLp"; } |
---|
70 | |
---|
71 | int ClpLp::_addCol() { |
---|
72 | _prob->addColumn(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX, 0.0); |
---|
73 | return _prob->numberColumns() - 1; |
---|
74 | } |
---|
75 | |
---|
76 | int ClpLp::_addRow() { |
---|
77 | _prob->addRow(0, 0, 0, -COIN_DBL_MAX, COIN_DBL_MAX); |
---|
78 | return _prob->numberRows() - 1; |
---|
79 | } |
---|
80 | |
---|
81 | |
---|
82 | void ClpLp::_eraseCol(int c) { |
---|
83 | _col_names_ref.erase(_prob->getColumnName(c)); |
---|
84 | _prob->deleteColumns(1, &c); |
---|
85 | } |
---|
86 | |
---|
87 | void ClpLp::_eraseRow(int r) { |
---|
88 | _row_names_ref.erase(_prob->getRowName(r)); |
---|
89 | _prob->deleteRows(1, &r); |
---|
90 | } |
---|
91 | |
---|
92 | void ClpLp::_eraseColId(int i) { |
---|
93 | cols.eraseIndex(i); |
---|
94 | cols.shiftIndices(i); |
---|
95 | } |
---|
96 | |
---|
97 | void ClpLp::_eraseRowId(int i) { |
---|
98 | rows.eraseIndex(i); |
---|
99 | rows.shiftIndices(i); |
---|
100 | } |
---|
101 | |
---|
102 | void ClpLp::_getColName(int c, std::string& name) const { |
---|
103 | name = _prob->getColumnName(c); |
---|
104 | } |
---|
105 | |
---|
106 | void ClpLp::_setColName(int c, const std::string& name) { |
---|
107 | _prob->setColumnName(c, const_cast<std::string&>(name)); |
---|
108 | _col_names_ref[name] = c; |
---|
109 | } |
---|
110 | |
---|
111 | int ClpLp::_colByName(const std::string& name) const { |
---|
112 | std::map<std::string, int>::const_iterator it = _col_names_ref.find(name); |
---|
113 | return it != _col_names_ref.end() ? it->second : -1; |
---|
114 | } |
---|
115 | |
---|
116 | void ClpLp::_getRowName(int r, std::string& name) const { |
---|
117 | name = _prob->getRowName(r); |
---|
118 | } |
---|
119 | |
---|
120 | void ClpLp::_setRowName(int r, const std::string& name) { |
---|
121 | _prob->setRowName(r, const_cast<std::string&>(name)); |
---|
122 | _row_names_ref[name] = r; |
---|
123 | } |
---|
124 | |
---|
125 | int ClpLp::_rowByName(const std::string& name) const { |
---|
126 | std::map<std::string, int>::const_iterator it = _row_names_ref.find(name); |
---|
127 | return it != _row_names_ref.end() ? it->second : -1; |
---|
128 | } |
---|
129 | |
---|
130 | |
---|
131 | void ClpLp::_setRowCoeffs(int ix, ExprIterator b, ExprIterator e) { |
---|
132 | std::map<int, Value> coeffs; |
---|
133 | |
---|
134 | int n = _prob->clpMatrix()->getNumCols(); |
---|
135 | |
---|
136 | const int* indices = _prob->clpMatrix()->getIndices(); |
---|
137 | const double* elements = _prob->clpMatrix()->getElements(); |
---|
138 | |
---|
139 | for (int i = 0; i < n; ++i) { |
---|
140 | CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[i]; |
---|
141 | CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[i]; |
---|
142 | |
---|
143 | const int* it = std::lower_bound(indices + begin, indices + end, ix); |
---|
144 | if (it != indices + end && *it == ix && elements[it - indices] != 0.0) { |
---|
145 | coeffs[i] = 0.0; |
---|
146 | } |
---|
147 | } |
---|
148 | |
---|
149 | for (ExprIterator it = b; it != e; ++it) { |
---|
150 | coeffs[it->first] = it->second; |
---|
151 | } |
---|
152 | |
---|
153 | for (std::map<int, Value>::iterator it = coeffs.begin(); |
---|
154 | it != coeffs.end(); ++it) { |
---|
155 | _prob->modifyCoefficient(ix, it->first, it->second); |
---|
156 | } |
---|
157 | } |
---|
158 | |
---|
159 | void ClpLp::_getRowCoeffs(int ix, InsertIterator b) const { |
---|
160 | int n = _prob->clpMatrix()->getNumCols(); |
---|
161 | |
---|
162 | const int* indices = _prob->clpMatrix()->getIndices(); |
---|
163 | const double* elements = _prob->clpMatrix()->getElements(); |
---|
164 | |
---|
165 | for (int i = 0; i < n; ++i) { |
---|
166 | CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[i]; |
---|
167 | CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[i]; |
---|
168 | |
---|
169 | const int* it = std::lower_bound(indices + begin, indices + end, ix); |
---|
170 | if (it != indices + end && *it == ix) { |
---|
171 | *b = std::make_pair(i, elements[it - indices]); |
---|
172 | } |
---|
173 | } |
---|
174 | } |
---|
175 | |
---|
176 | void ClpLp::_setColCoeffs(int ix, ExprIterator b, ExprIterator e) { |
---|
177 | std::map<int, Value> coeffs; |
---|
178 | |
---|
179 | CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
---|
180 | CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
---|
181 | |
---|
182 | const int* indices = _prob->clpMatrix()->getIndices(); |
---|
183 | const double* elements = _prob->clpMatrix()->getElements(); |
---|
184 | |
---|
185 | for (CoinBigIndex i = begin; i != end; ++i) { |
---|
186 | if (elements[i] != 0.0) { |
---|
187 | coeffs[indices[i]] = 0.0; |
---|
188 | } |
---|
189 | } |
---|
190 | for (ExprIterator it = b; it != e; ++it) { |
---|
191 | coeffs[it->first] = it->second; |
---|
192 | } |
---|
193 | for (std::map<int, Value>::iterator it = coeffs.begin(); |
---|
194 | it != coeffs.end(); ++it) { |
---|
195 | _prob->modifyCoefficient(it->first, ix, it->second); |
---|
196 | } |
---|
197 | } |
---|
198 | |
---|
199 | void ClpLp::_getColCoeffs(int ix, InsertIterator b) const { |
---|
200 | CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
---|
201 | CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
---|
202 | |
---|
203 | const int* indices = _prob->clpMatrix()->getIndices(); |
---|
204 | const double* elements = _prob->clpMatrix()->getElements(); |
---|
205 | |
---|
206 | for (CoinBigIndex i = begin; i != end; ++i) { |
---|
207 | *b = std::make_pair(indices[i], elements[i]); |
---|
208 | ++b; |
---|
209 | } |
---|
210 | } |
---|
211 | |
---|
212 | void ClpLp::_setCoeff(int ix, int jx, Value value) { |
---|
213 | _prob->modifyCoefficient(ix, jx, value); |
---|
214 | } |
---|
215 | |
---|
216 | ClpLp::Value ClpLp::_getCoeff(int ix, int jx) const { |
---|
217 | CoinBigIndex begin = _prob->clpMatrix()->getVectorStarts()[ix]; |
---|
218 | CoinBigIndex end = begin + _prob->clpMatrix()->getVectorLengths()[ix]; |
---|
219 | |
---|
220 | const int* indices = _prob->clpMatrix()->getIndices(); |
---|
221 | const double* elements = _prob->clpMatrix()->getElements(); |
---|
222 | |
---|
223 | const int* it = std::lower_bound(indices + begin, indices + end, jx); |
---|
224 | if (it != indices + end && *it == jx) { |
---|
225 | return elements[it - indices]; |
---|
226 | } else { |
---|
227 | return 0.0; |
---|
228 | } |
---|
229 | } |
---|
230 | |
---|
231 | void ClpLp::_setColLowerBound(int i, Value lo) { |
---|
232 | _prob->setColumnLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
---|
233 | } |
---|
234 | |
---|
235 | ClpLp::Value ClpLp::_getColLowerBound(int i) const { |
---|
236 | double val = _prob->getColLower()[i]; |
---|
237 | return val == - COIN_DBL_MAX ? - INF : val; |
---|
238 | } |
---|
239 | |
---|
240 | void ClpLp::_setColUpperBound(int i, Value up) { |
---|
241 | _prob->setColumnUpper(i, up == INF ? COIN_DBL_MAX : up); |
---|
242 | } |
---|
243 | |
---|
244 | ClpLp::Value ClpLp::_getColUpperBound(int i) const { |
---|
245 | double val = _prob->getColUpper()[i]; |
---|
246 | return val == COIN_DBL_MAX ? INF : val; |
---|
247 | } |
---|
248 | |
---|
249 | void ClpLp::_setRowLowerBound(int i, Value lo) { |
---|
250 | _prob->setRowLower(i, lo == - INF ? - COIN_DBL_MAX : lo); |
---|
251 | } |
---|
252 | |
---|
253 | ClpLp::Value ClpLp::_getRowLowerBound(int i) const { |
---|
254 | double val = _prob->getRowLower()[i]; |
---|
255 | return val == - COIN_DBL_MAX ? - INF : val; |
---|
256 | } |
---|
257 | |
---|
258 | void ClpLp::_setRowUpperBound(int i, Value up) { |
---|
259 | _prob->setRowUpper(i, up == INF ? COIN_DBL_MAX : up); |
---|
260 | } |
---|
261 | |
---|
262 | ClpLp::Value ClpLp::_getRowUpperBound(int i) const { |
---|
263 | double val = _prob->getRowUpper()[i]; |
---|
264 | return val == COIN_DBL_MAX ? INF : val; |
---|
265 | } |
---|
266 | |
---|
267 | void ClpLp::_setObjCoeffs(ExprIterator b, ExprIterator e) { |
---|
268 | int num = _prob->clpMatrix()->getNumCols(); |
---|
269 | for (int i = 0; i < num; ++i) { |
---|
270 | _prob->setObjectiveCoefficient(i, 0.0); |
---|
271 | } |
---|
272 | for (ExprIterator it = b; it != e; ++it) { |
---|
273 | _prob->setObjectiveCoefficient(it->first, it->second); |
---|
274 | } |
---|
275 | } |
---|
276 | |
---|
277 | void ClpLp::_getObjCoeffs(InsertIterator b) const { |
---|
278 | int num = _prob->clpMatrix()->getNumCols(); |
---|
279 | for (int i = 0; i < num; ++i) { |
---|
280 | Value coef = _prob->getObjCoefficients()[i]; |
---|
281 | if (coef != 0.0) { |
---|
282 | *b = std::make_pair(i, coef); |
---|
283 | ++b; |
---|
284 | } |
---|
285 | } |
---|
286 | } |
---|
287 | |
---|
288 | void ClpLp::_setObjCoeff(int i, Value obj_coef) { |
---|
289 | _prob->setObjectiveCoefficient(i, obj_coef); |
---|
290 | } |
---|
291 | |
---|
292 | ClpLp::Value ClpLp::_getObjCoeff(int i) const { |
---|
293 | return _prob->getObjCoefficients()[i]; |
---|
294 | } |
---|
295 | |
---|
296 | ClpLp::SolveExitStatus ClpLp::_solve() { |
---|
297 | return _prob->primal() >= 0 ? SOLVED : UNSOLVED; |
---|
298 | } |
---|
299 | |
---|
300 | ClpLp::SolveExitStatus ClpLp::solvePrimal() { |
---|
301 | return _prob->primal() >= 0 ? SOLVED : UNSOLVED; |
---|
302 | } |
---|
303 | |
---|
304 | ClpLp::SolveExitStatus ClpLp::solveDual() { |
---|
305 | return _prob->dual() >= 0 ? SOLVED : UNSOLVED; |
---|
306 | } |
---|
307 | |
---|
308 | ClpLp::SolveExitStatus ClpLp::solveBarrier() { |
---|
309 | return _prob->barrier() >= 0 ? SOLVED : UNSOLVED; |
---|
310 | } |
---|
311 | |
---|
312 | ClpLp::Value ClpLp::_getPrimal(int i) const { |
---|
313 | return _prob->primalColumnSolution()[i]; |
---|
314 | } |
---|
315 | ClpLp::Value ClpLp::_getPrimalValue() const { |
---|
316 | return _prob->objectiveValue(); |
---|
317 | } |
---|
318 | |
---|
319 | ClpLp::Value ClpLp::_getDual(int i) const { |
---|
320 | return _prob->dualRowSolution()[i]; |
---|
321 | } |
---|
322 | |
---|
323 | ClpLp::Value ClpLp::_getPrimalRay(int i) const { |
---|
324 | if (!_primal_ray) { |
---|
325 | _primal_ray = _prob->unboundedRay(); |
---|
326 | LEMON_ASSERT(_primal_ray != 0, "Primal ray is not provided"); |
---|
327 | } |
---|
328 | return _primal_ray[i]; |
---|
329 | } |
---|
330 | |
---|
331 | ClpLp::Value ClpLp::_getDualRay(int i) const { |
---|
332 | if (!_dual_ray) { |
---|
333 | _dual_ray = _prob->infeasibilityRay(); |
---|
334 | LEMON_ASSERT(_dual_ray != 0, "Dual ray is not provided"); |
---|
335 | } |
---|
336 | return _dual_ray[i]; |
---|
337 | } |
---|
338 | |
---|
339 | ClpLp::VarStatus ClpLp::_getColStatus(int i) const { |
---|
340 | switch (_prob->getColumnStatus(i)) { |
---|
341 | case ClpSimplex::basic: |
---|
342 | return BASIC; |
---|
343 | case ClpSimplex::isFree: |
---|
344 | return FREE; |
---|
345 | case ClpSimplex::atUpperBound: |
---|
346 | return UPPER; |
---|
347 | case ClpSimplex::atLowerBound: |
---|
348 | return LOWER; |
---|
349 | case ClpSimplex::isFixed: |
---|
350 | return FIXED; |
---|
351 | case ClpSimplex::superBasic: |
---|
352 | return FREE; |
---|
353 | default: |
---|
354 | LEMON_ASSERT(false, "Wrong column status"); |
---|
355 | return VarStatus(); |
---|
356 | } |
---|
357 | } |
---|
358 | |
---|
359 | ClpLp::VarStatus ClpLp::_getRowStatus(int i) const { |
---|
360 | switch (_prob->getColumnStatus(i)) { |
---|
361 | case ClpSimplex::basic: |
---|
362 | return BASIC; |
---|
363 | case ClpSimplex::isFree: |
---|
364 | return FREE; |
---|
365 | case ClpSimplex::atUpperBound: |
---|
366 | return UPPER; |
---|
367 | case ClpSimplex::atLowerBound: |
---|
368 | return LOWER; |
---|
369 | case ClpSimplex::isFixed: |
---|
370 | return FIXED; |
---|
371 | case ClpSimplex::superBasic: |
---|
372 | return FREE; |
---|
373 | default: |
---|
374 | LEMON_ASSERT(false, "Wrong row status"); |
---|
375 | return VarStatus(); |
---|
376 | } |
---|
377 | } |
---|
378 | |
---|
379 | |
---|
380 | ClpLp::ProblemType ClpLp::_getPrimalType() const { |
---|
381 | if (_prob->isProvenOptimal()) { |
---|
382 | return OPTIMAL; |
---|
383 | } else if (_prob->isProvenPrimalInfeasible()) { |
---|
384 | return INFEASIBLE; |
---|
385 | } else if (_prob->isProvenDualInfeasible()) { |
---|
386 | return UNBOUNDED; |
---|
387 | } else { |
---|
388 | return UNDEFINED; |
---|
389 | } |
---|
390 | } |
---|
391 | |
---|
392 | ClpLp::ProblemType ClpLp::_getDualType() const { |
---|
393 | if (_prob->isProvenOptimal()) { |
---|
394 | return OPTIMAL; |
---|
395 | } else if (_prob->isProvenDualInfeasible()) { |
---|
396 | return INFEASIBLE; |
---|
397 | } else if (_prob->isProvenPrimalInfeasible()) { |
---|
398 | return INFEASIBLE; |
---|
399 | } else { |
---|
400 | return UNDEFINED; |
---|
401 | } |
---|
402 | } |
---|
403 | |
---|
404 | void ClpLp::_setSense(ClpLp::Sense sense) { |
---|
405 | switch (sense) { |
---|
406 | case MIN: |
---|
407 | _prob->setOptimizationDirection(1); |
---|
408 | break; |
---|
409 | case MAX: |
---|
410 | _prob->setOptimizationDirection(-1); |
---|
411 | break; |
---|
412 | } |
---|
413 | } |
---|
414 | |
---|
415 | ClpLp::Sense ClpLp::_getSense() const { |
---|
416 | double dir = _prob->optimizationDirection(); |
---|
417 | if (dir > 0.0) { |
---|
418 | return MIN; |
---|
419 | } else { |
---|
420 | return MAX; |
---|
421 | } |
---|
422 | } |
---|
423 | |
---|
424 | void ClpLp::_clear() { |
---|
425 | delete _prob; |
---|
426 | _prob = new ClpSimplex(); |
---|
427 | _col_names_ref.clear(); |
---|
428 | _clear_temporals(); |
---|
429 | } |
---|
430 | |
---|
431 | void ClpLp::_messageLevel(MessageLevel level) { |
---|
432 | switch (level) { |
---|
433 | case MESSAGE_NOTHING: |
---|
434 | _prob->setLogLevel(0); |
---|
435 | break; |
---|
436 | case MESSAGE_ERROR: |
---|
437 | _prob->setLogLevel(1); |
---|
438 | break; |
---|
439 | case MESSAGE_WARNING: |
---|
440 | _prob->setLogLevel(2); |
---|
441 | break; |
---|
442 | case MESSAGE_NORMAL: |
---|
443 | _prob->setLogLevel(3); |
---|
444 | break; |
---|
445 | case MESSAGE_VERBOSE: |
---|
446 | _prob->setLogLevel(4); |
---|
447 | break; |
---|
448 | } |
---|
449 | } |
---|
450 | |
---|
451 | } //END OF NAMESPACE LEMON |
---|