/// <summary>
/// 参数说明
/// value：修约的数值
/// precision：0表示保留到整数，-1表示保留一位小数，-2标书保留两位小数
/// roundRule：0表示四舍六入五单双，0.2表示0.2修约，0.5表示0.5修约
/// </summary>
/// <param name="args"></param>
/// <returns></returns>
public override object Evaluate(object[] args)
{
double value = 0;
int precision = 1;
string roundRule = "0";
double r = 0;
try
{
value = ArgumentConvert.ToDouble(args[0]);
precision = ArgumentConvert.ToInt(args[1]);
roundRule = ArgumentConvert.ToString(args[2]);
switch (roundRule)
{
case "0":
r = numericalRound.Evaluate(value, precision);
break;
case "0.2":
r = numericalRound02.Evaluate(value, precision);
break;
case "0.5":
r = numericalRound05.Evaluate(value, precision);
break;
}
return(NumericalFormatProvier.Format(r, precision));
}
catch
{
return(CalcError.Value);
}
}
public override object Evaluate(object[] args)
{
try
{
DateTime start_date = ArgumentConvert.ToDateTime(args[0]);
DateTime end_date = ArgumentConvert.ToDateTime(args[1]);
String type = ArgumentConvert.ToString(args[2]).Trim().ToUpper();
//int hasDecimal = CalcConvert.ToInt(args[3]);
double time = 0;
TimeSpan ts = end_date.Subtract(start_date);
switch (type)
{
case "D": //天数
time = ts.TotalDays;
break;
case "H": //小时数
time = (ts.TotalHours < 0 ? ts.TotalHours + 24 : ts.TotalHours);
break;
case "M": //分钟数
time = (ts.TotalMinutes < 0 ? ts.TotalMinutes + 24 * 60 : ts.TotalMinutes);
break;
case "S": //秒数
time = (ts.TotalSeconds < 0 ? ts.TotalSeconds + 24 * 3600 : ts.TotalSeconds);
break;
}
if (time != 0)
{
return(time);
}
return(DBNull.Value);
}
catch
{
throw new InvalidCastException();
}
}