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linear_solver: format cplex_interface

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This commit is contained in:
Corentin Le Molgat
2023-06-09 09:38:57 +02:00
parent 249b3286cd
commit b9609e7749
1 changed files with 46 additions and 47 deletions
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93
ortools/linear_solver/cplex_interface.cc
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@@ -117,7 +117,7 @@ class CplexInterface : public MPSolverInterface {
virtual bool IsMIP() const { return mMip; }
bool SetSolverSpecificParametersAsString(
const std::string &parameters) override;
const std::string& parameters) override;
virtual void ExtractNewVariables();
virtual void ExtractNewConstraints();
virtual void ExtractObjective();
@@ -866,8 +866,7 @@ void CplexInterface::ExtractNewConstraints() {
CPXDIM newCons = total - offset;
CPXDIM const cols = CPXXgetnumcols(mEnv, mLp);
CHECK(last_variable_index_ == 0 ||
last_variable_index_ == cols);
CHECK(last_variable_index_ == 0 || last_variable_index_ == cols);
CPXDIM const chunk = 10; // max number of rows to add in one shot
// Update indices of new constraints _before_ actually extracting
@@ -954,8 +953,7 @@ void CplexInterface::ExtractObjective() {
// any non-zero duplicates.
CPXDIM const cols = CPXXgetnumcols(mEnv, mLp);
CHECK(last_variable_index_ == 0 ||
last_variable_index_ == cols);
CHECK(last_variable_index_ == 0 || last_variable_index_ == cols);
unique_ptr<CPXDIM[]> ind(new CPXDIM[cols]);
unique_ptr<double[]> val(new double[cols]);
@@ -1116,14 +1114,15 @@ MPSolver::ResultStatus CplexInterface::Solve(MPSolverParameters const& param) {
if (!solver_->solution_hint_.empty()) {
int const sol_count = solver_->solution_hint_.size();
long long int beg[1] = {0};
int *varindices = new int[sol_count];
double *values = new double[sol_count];
int* varindices = new int[sol_count];
double* values = new double[sol_count];
for (int i=0; i<sol_count; ++i) {
for (int i = 0; i < sol_count; ++i) {
varindices[i] = solver_->solution_hint_[i].first->index();
values[i] = solver_->solution_hint_[i].second;
}
CPXXaddmipstarts (mEnv, mLp, 1, sol_count, beg, varindices, values, NULL, NULL);
CPXXaddmipstarts(mEnv, mLp, 1, sol_count, beg, varindices, values, NULL,
NULL);
}
// Set parameters.
// NOTE: We must invoke SetSolverSpecificParametersAsString() _first_.
@@ -1290,46 +1289,46 @@ MPSolverInterface* BuildCplexInterface(bool mip, MPSolver* const solver) {
}
bool CplexInterface::SetSolverSpecificParametersAsString(
const std::string &parameters) {
if (parameters.empty())
return true;
for (const auto parameter : absl::StrSplit(parameters, absl::ByAnyChar(","),
absl::SkipWhitespace())) {
std::vector<std::string> key_value =
absl::StrSplit(parameter, absl::ByAnyChar("="), absl::SkipWhitespace());
if (key_value.size() != 2) {
LOG(WARNING) << absl::StrFormat(
"Cannot parse parameter '%s'. Expected format is 'parameter/name = "
"value'",
parameter);
continue;
}
std::string identifier = key_value[0];
absl::RemoveExtraAsciiWhitespace(&identifier);
std::string value = key_value[1];
absl::RemoveExtraAsciiWhitespace(&value);
try {
if(identifier.find("LogFile") != std::string::npos) {
CPXXsetlogfilename (mEnv, value.c_str(), "w");
} else {
std::string delimiter = ".";
if (value.find(delimiter) == std::string::npos) {
(void)CPXXsetintparam(mEnv, std::stoi(identifier), std::stoi(value));
} else {
(void)CPXXsetdblparam(mEnv, std::stoi(identifier), std::stod(value));
}
VLOG(2) << absl::StrFormat("Set parameter %s to %s", identifier, value);
}
} catch (...) {
LOG(WARNING) << absl::StrFormat(
"Cannot parse parameter '%s'. Expected format is 'parameter/name = value'",
identifier);
}
const std::string& parameters) {
if (parameters.empty()) return true;
for (const auto parameter : absl::StrSplit(parameters, absl::ByAnyChar(","),
absl::SkipWhitespace())) {
std::vector<std::string> key_value =
absl::StrSplit(parameter, absl::ByAnyChar("="), absl::SkipWhitespace());
if (key_value.size() != 2) {
LOG(WARNING) << absl::StrFormat(
"Cannot parse parameter '%s'. Expected format is 'parameter/name = "
"value'",
parameter);
continue;
}
std::string identifier = key_value[0];
absl::RemoveExtraAsciiWhitespace(&identifier);
std::string value = key_value[1];
absl::RemoveExtraAsciiWhitespace(&value);
try {
if (identifier.find("LogFile") != std::string::npos) {
CPXXsetlogfilename(mEnv, value.c_str(), "w");
} else {
std::string delimiter = ".";
if (value.find(delimiter) == std::string::npos) {
(void)CPXXsetintparam(mEnv, std::stoi(identifier), std::stoi(value));
} else {
(void)CPXXsetdblparam(mEnv, std::stoi(identifier), std::stod(value));
}
VLOG(2) << absl::StrFormat("Set parameter %s to %s", identifier, value);
}
} catch (...) {
LOG(WARNING) << absl::StrFormat(
"Cannot parse parameter '%s'. Expected format is 'parameter/name = "
"value'",
identifier);
}
return true;
}
return true;
}
} // namespace operations_research
#endif // #if defined(USE_CPLEX)