Method readBasis

highs/lp_data/Highs.cpp:846–870

}

HighsStatus Highs::readBasis(const std::string& filename) {
  this->logHeader();
  HighsStatus return_status = HighsStatus::kOk;
  // Try to read basis file into read_basis
  HighsBasis read_basis = basis_;
  return_status = interpretCallStatus(
      options_.log_options,
      readBasisFile(options_.log_options, model_.lp_, read_basis, filename),
      return_status, "readBasis");
  if (return_status != HighsStatus::kOk) return return_status;
  // Basis read OK: check whether it's consistent with the LP
  if (!isBasisConsistent(model_.lp_, read_basis)) {
    highsLogUser(options_.log_options, HighsLogType::kError,
                 "readBasis: invalid basis\n");
    return HighsStatus::kError;
  }
  // Update the HiGHS basis and invalidate any simplex basis for the model
  basis_ = read_basis;
  basis_.valid = true;
  basis_.useful = true;
  // Follow implications of a new HiGHS basis
  newHighsBasis();
  // Can't use returnFromHighs since...
  return HighsStatus::kOk;
}

HighsStatus Highs::writeModel(const std::string& filename) {
  return writeLocalModel(model_, filename);