C#实现功能强大的中国农历日历操作类

/// <summary>
/// 传回农历y年闰月的天数
/// </summary>
private static int leapDays(int y)
{
  if (leapMonth(y) != 0)
  {
 if ((lunarInfo[y - 1900] & 0x10000) != 0)
   return 30;
 else
   return 29;
  }
  else
 return 0;
}
/// <summary>
/// 传回农历y年闰哪个月 1-12 , 没闰传回 0
/// </summary>
private static int leapMonth(int y)
{
  return (int)(lunarInfo[y - 1900] & 0xf);
}
/// <summary>
/// 传回农历y年m月的总天数
/// </summary>
private static int monthDays(int y, int m)
{
  if ((lunarInfo[y - 1900] & (0x10000 >> m)) == 0)
 return 29;
  else
 return 30;
}
/// <summary>
/// 传回农历y年的生肖
/// </summary>
private static String AnimalsYear(int y)
{
  return Animals[(y - 4) % 12];
}
/// <summary>
/// 传入月日的offset 传回干支,0=甲子
/// </summary>
private static String cyclicalm(int num)
{
  return (Gan[num % 10] + Zhi[num % 12]);
}
/// <summary>
/// 传入offset 传回干支, 0=甲子
/// </summary>
private static String cyclical(int y)
{
  int num = y - 1900 + 36;
  return (cyclicalm(num));
}