Method userScale

highs/lp_data/HighsInterface.cpp:3093–3112

}

HighsStatus Highs::userScale(HighsUserScaleData& data) {
  if (!options_.user_objective_scale && !options_.user_bound_scale)
    return HighsStatus::kOk;
  // User objective and bound scaling data are accumulated in the
  // HighsUserScaleData struct, in particular, there is a local copy
  // of the user objective and bound scaling options values, and
  // records of resulting extreme data values that prevent the user
  // objective and bound scaling from being applied.
  initialiseUserScaleData(this->options_, data);
  // Determine whether user scaling yields excessively large cost,
  // Hessian values, column/row bounds or matrix values. If not,
  // then apply the user scaling to the model...
  if (this->userScaleModel(data) == HighsStatus::kError)
    return HighsStatus::kError;
  // ... and the solution
  this->userScaleSolution(data);
  // Indicate that the scaling has been applied
  data.applied = true;
  return HighsStatus::kOk;
}

HighsStatus Highs::userUnscale(HighsUserScaleData& data) {
  if (!data.applied) return HighsStatus::kOk;