text: public override ValueEval Evaluate(int srcRowIndex, int srcColumnIndex, ValueEval arg0, ValueEval arg1,ValueEval arg2){double result;try{result = Evaluate(EvalArg(arg0, srcRowIndex, srcColumnIndex), EvalArg(arg1, srcRowIndex, srcColumnIndex), EvalArg(arg2, srcRowIndex, srcColumnIndex));}catch (EvaluationException e){return e.GetErrorEval();}return new NumberEval(result);}