Add rounding mode to the calculation of the frequency scaling factor

Issue-Ref: 3826
Issue-Url: https://af3-developer.fortiss.org/issues/3826

Signed-off-by: Tiziano Munaro <munaro@fortiss.org>

org.fortiss.af3.task/src/org/fortiss/af3/task/model/allocation/impl/.ratings

@@ -10,4 +10,4 @@ TaskParameterTableStaticImpl.java b646b9201432074bec0a1b0c408255b982474b32 GREEN
 TaskPortToTransceiverAllocationEntryStaticImpl.java 0ac11438943e72798330e76caff50782d1970cb4 GREEN
 TaskToExecutionUnitAllocationEntryStaticImpl.java ed6b5d4e28a2f445d71890b5e5718717b8457796 GREEN
 TaskToExecutionUnitAllocationTableStaticImpl.java 34ea0a9a476bb2527cf0114871073ce25c0df09c GREEN
-TaskWcetTableStaticImpl.java e15f883abb1c47dd189916c947869cffe20d9472 GREEN
+TaskWcetTableStaticImpl.java 29fee598be4cda0dff1897c512e6d161ceb7e15d YELLOW

org.fortiss.af3.task/src/org/fortiss/af3/task/model/allocation/impl/TaskWcetTableStaticImpl.java

@@ -20,6 +20,7 @@ import static org.fortiss.tooling.base.utils.AnnotationUtils.getAnnotation;
 import static org.fortiss.tooling.kernel.utils.EcoreUtils.convertList;
 
 import java.math.BigDecimal;
+import java.math.RoundingMode;
 
 import org.eclipse.emf.common.util.EList;
 import org.fortiss.af3.platform.model.ExecutionUnit;
@@ -67,7 +68,8 @@ public class TaskWcetTableStaticImpl {
 			return null;
 		}
 		// Scale WCET to provided frequency (relative to base frequency)
-		return (wcet.multiply(valueOf(baseFrequency))).divide(valueOf(frequency));
+		return (wcet.multiply(valueOf(baseFrequency))).divide(valueOf(frequency),
+				RoundingMode.HALF_UP);
 	}
 
 	/**