1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
|
/* $Id: driver.cpp 1662 2011-01-04 17:52:40Z lou $ */
// Copyright (C) 2002,2003 International Business Machines
// Corporation and others. All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
#include "ClpSimplex.hpp"
#include <iomanip>
int main(int argc, const char *argv[])
{
ClpSimplex model;
int status;
// Keep names when reading an mps file
if (argc < 2) {
#if defined(SAMPLEDIR)
status = model.readMps(SAMPLEDIR "/p0033.mps", true);
#else
fprintf(stderr, "Do not know where to find sample MPS files.\n");
exit(1);
#endif
} else
status = model.readMps(argv[1], true);
if (status) {
fprintf(stderr, "Bad readMps %s\n", argv[1]);
fprintf(stdout, "Bad readMps %s\n", argv[1]);
exit(1);
}
#ifdef STYLE1
if (argc < 3 || !strstr(argv[2], "primal")) {
// Use the dual algorithm unless user said "primal"
model.initialDualSolve();
} else {
model.initialPrimalSolve();
}
#else
ClpSolve solvectl;
if (argc < 3 || (!strstr(argv[2], "primal") && !strstr(argv[2], "barrier"))) {
// Use the dual algorithm unless user said "primal" or "barrier"
std::cout << std::endl << " Solve using Dual: " << std::endl;
solvectl.setSolveType(ClpSolve::useDual);
solvectl.setPresolveType(ClpSolve::presolveOn);
model.initialSolve(solvectl);
} else if (strstr(argv[2], "barrier")) {
// Use the barrier algorithm if user said "barrier"
std::cout << std::endl << " Solve using Barrier: " << std::endl;
solvectl.setSolveType(ClpSolve::useBarrier);
solvectl.setPresolveType(ClpSolve::presolveOn);
model.initialSolve(solvectl);
} else {
std::cout << std::endl << " Solve using Primal: " << std::endl;
solvectl.setSolveType(ClpSolve::usePrimal);
solvectl.setPresolveType(ClpSolve::presolveOn);
model.initialSolve(solvectl);
}
#endif
std::string modelName;
model.getStrParam(ClpProbName, modelName);
std::cout << "Model " << modelName << " has " << model.numberRows() << " rows and " <<
model.numberColumns() << " columns" << std::endl;
// remove this to print solution
exit(0);
/*
Now to print out solution. The methods used return modifiable
arrays while the alternative names return const pointers -
which is of course much more virtuous.
This version just does non-zero columns
*/
#if 0
int numberRows = model.numberRows();
// Alternatively getRowActivity()
double * rowPrimal = model.primalRowSolution();
// Alternatively getRowPrice()
double * rowDual = model.dualRowSolution();
// Alternatively getRowLower()
double * rowLower = model.rowLower();
// Alternatively getRowUpper()
double * rowUpper = model.rowUpper();
// Alternatively getRowObjCoefficients()
double * rowObjective = model.rowObjective();
// If we have not kept names (parameter to readMps) this will be 0
assert(model.lengthNames());
// Row names
const std::vector<std::string> * rowNames = model.rowNames();
int iRow;
std::cout << " Primal Dual Lower Upper (Cost)"
<< std::endl;
for (iRow = 0; iRow < numberRows; iRow++) {
double value;
std::cout << std::setw(6) << iRow << " " << std::setw(8) << (*rowNames)[iRow];
value = rowPrimal[iRow];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = rowDual[iRow];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = rowLower[iRow];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = rowUpper[iRow];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
if (rowObjective) {
value = rowObjective[iRow];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
}
std::cout << std::endl;
}
#endif
std::cout << "--------------------------------------" << std::endl;
// Columns
int numberColumns = model.numberColumns();
// Alternatively getColSolution()
double * columnPrimal = model.primalColumnSolution();
// Alternatively getReducedCost()
double * columnDual = model.dualColumnSolution();
// Alternatively getColLower()
double * columnLower = model.columnLower();
// Alternatively getColUpper()
double * columnUpper = model.columnUpper();
// Alternatively getObjCoefficients()
double * columnObjective = model.objective();
// If we have not kept names (parameter to readMps) this will be 0
assert(model.lengthNames());
// Column names
const std::vector<std::string> * columnNames = model.columnNames();
int iColumn;
std::cout << " Primal Dual Lower Upper Cost"
<< std::endl;
for (iColumn = 0; iColumn < numberColumns; iColumn++) {
double value;
value = columnPrimal[iColumn];
if (fabs(value) > 1.0e-8) {
std::cout << std::setw(6) << iColumn << " " << std::setw(8) << (*columnNames)[iColumn];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = columnDual[iColumn];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = columnLower[iColumn];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = columnUpper[iColumn];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
value = columnObjective[iColumn];
if (fabs(value) < 1.0e5)
std::cout << std::setiosflags(std::ios::fixed | std::ios::showpoint) << std::setw(14) << value;
else
std::cout << std::setiosflags(std::ios::scientific) << std::setw(14) << value;
std::cout << std::endl;
}
}
std::cout << "--------------------------------------" << std::endl;
return 0;
}
|
