Added variable/constraint IIS status

Author: jajhall

highs/lp_data/HConst.h

@@ -281,8 +281,8 @@ enum IisStrategy : int {
 enum IisStatus {
   kIisStatusMin = 0,
   kIisStatusInConflict = kIisStatusMin,  // 0
-  kIisStatusNotInConflict,  // 1
-  kIisStatusMaybeInConflict,  // 2
+  kIisStatusNotInConflict,               // 1
+  kIisStatusMaybeInConflict,             // 2
   kIisStatusMax = kIisStatusMaybeInConflict
 };
 

highs/lp_data/HighsIis.cpp

@@ -284,9 +284,9 @@ void HighsIis::getStatus(const HighsLp& lp) {
   this->row_status_.assign(lp.num_row_, kIisStatusNotInConflict);
   HighsInt iis_num_col = this->col_index_.size();
   HighsInt iis_num_row = this->row_index_.size();
-  for (HighsInt iisCol = 0; iisCol < iis_num_col; iisCol++) 
+  for (HighsInt iisCol = 0; iisCol < iis_num_col; iisCol++)
     this->col_status_[this->col_index_[iisCol]] = kIisStatusInConflict;
-  for (HighsInt iisRow = 0; iisRow < iis_num_row; iisRow++) 
+  for (HighsInt iisRow = 0; iisRow < iis_num_row; iisRow++)
     this->row_status_[this->row_index_[iisRow]] = kIisStatusInConflict;
 }
 

highs/lp_data/HighsInterface.cpp

@@ -1869,7 +1869,7 @@ HighsStatus Highs::getIisInterfaceReturn(const HighsStatus return_status) {
     // Construct the ISS status vectors
     this->iis_.getStatus(model_.lp_);
   }
-  return return_status;  
+  return return_status;
 }
 
 HighsStatus Highs::getIisInterface() {
@@ -1915,7 +1915,8 @@ HighsStatus Highs::getIisInterface() {
   }
   // Don't continue with more expensive techniques if using the IIS
   // light strategy
-  if (options_.iis_strategy == kIisStrategyLight) return this->getIisInterfaceReturn(HighsStatus::kOk);
+  if (options_.iis_strategy == kIisStrategyLight)
+    return this->getIisInterfaceReturn(HighsStatus::kOk);
   const bool ray_option = false;
   //      options_.iis_strategy == kIisStrategyFromRayRowPriority ||
   //      options_.iis_strategy == kIisStrategyFromRayColPriority;