using System;

namespace IStation.Untity
{
    public class NumberHelper
    {

        /// <summary>
        /// 
        /// </summary>
        public static double? Round(double? v, int num)
        {
            if (v == null)
                return null;
            return Math.Round(v.Value, num);
        }

        /// <summary>
        /// 
        /// </summary>
        public static string RoundString(double? v, int num)
        {
            if (v == null)
                return string.Empty;
            return Math.Round(v.Value, num).ToString();
        }

    }

}