Merge remote-tracking branch 'origin/v10-minor'

Author: scip-ci

CHANGELOG

@@ -97,6 +97,7 @@ Fixed bugs
 - fixed parallelism computation of dynamic cut selector to use Euclidean norm instead of unsupported argument
 - fixed that non-efficious cuts were not filtered out before checking dynamic parallelism in dynamic cut selector
 - fixes in nauty.h for 32bit systems
+- fixed SCIPgetDualSolVal() for a linear constraint with a single variable
 
 Miscellaneous
 -------------

src/scip/scip_sol.c

@@ -2673,10 +2673,13 @@ SCIP_RETCODE SCIPgetDualSolVal(
 
          activity = SCIPvarGetLPSol(vars[0]) * vals[0];
 
-         /* return the reduced cost of the variable if the constraint would be tight */
+         /* return the reduced cost of the variable divided by the coefficient if the constraint would be tight */
          if( SCIPsetIsEQ(scip->set, activity, SCIPgetRhsLinear(scip, cons))
           || SCIPsetIsEQ(scip->set, activity, SCIPgetLhsLinear(scip, cons)) )
-            (*dualsolval) = SCIPgetVarRedcost(scip, vars[0]);
+         {
+            assert(vals[0] != 0.0);
+            (*dualsolval) = SCIPgetVarRedcost(scip, vars[0]) / vals[0];
+         }
          else
             (*dualsolval) = 0.0;
       }