Add dotProduct method to explicit.StateValues (already in symbolic ones).

prism/src/explicit/StateValues.java

@@ -1267,6 +1267,22 @@ public class StateValues implements StateVector
 		}
 	}
 
+	/**
+	 * Compute dot (inner) product of this and another vector {@code sv}.
+	 */
+	public double dotProduct(StateValues sv) throws PrismException
+	{
+		if (type instanceof TypeDouble) {
+			double dotProduct = 0;
+			for (int i = 0; i < size; i++) {
+				dotProduct += valuesD[i] * sv.valuesI[i];
+			}
+			return dotProduct;
+		} else {
+			throw new PrismException("Dot product can only be applied to double vectors");
+		}
+	}
+	
 	/**
 	 * Set the elements of this vector by reading them in from a file.
 	 */