text: public override ValueEval Evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1,ValueEval arg2){double result;try{double d0 = NumericFunction.SingleOperandEvaluate(arg0, srcRowIndex, srcColumnIndex);double d1 = NumericFunction.SingleOperandEvaluate(arg1, srcRowIndex, srcColumnIndex);double d2 = NumericFunction.SingleOperandEvaluate(arg2, srcRowIndex, srcColumnIndex);result = Evaluate(GetYear(d0), (int)d1, (int)d2);NumericFunction.CheckValue(result);}catch (EvaluationException e){return e.GetErrorEval();}return new NumberEval(result);}