万年历农历程序(抄表法)

//C51写的公历转农历和星期 
#define uchar unsigned char
#define uint unsigned int
#include
/*
公历年对应的农历数据,每年三字节,
格式第一字节BIT7-4 位表示闰月月份,值为0 为无闰月,BIT3-0 对应农历第1-4 月的大小
第二字节BIT7-0 对应农历第5-12 月大小,第三字节BIT7 表示农历第13 个月大小
月份对应的位为1 表示本农历月大(30 天),为0 表示小(29 天)
第三字节BIT6-5 表示春节的公历月份,BIT4-0 表示春节的公历日期
*/
code uchar year_code[597]={
 0x04,0xAe,0x53,0x0A,0x57,0x48,0x55,0x26,0xBd, // 1901-1903
 0x0d,0x26,0x50,0x0d,0x95,0x44,0x46,0xAA,0xB9, // 1904-1906
 0x05,0x6A,0x4d,0x09,0xAd,0x42,0x24,0xAe,0xB6, // 1907-1909
 0x04,0xAe,0x4A,0x6A,0x4d,0xBe,0x0A,0x4d,0x52, // 1910-1912
 0x0d,0x25,0x46,0x5d,0x52,0xBA,0x0B,0x54,0x4e, // 1913-1915

 0x0d,0x6A,0x43,0x29,0x6d,0x37,0x09,0x5B,0x4B, // 1916-1918
 0x74,0x9B,0xC1,0x04,0x97,0x54,0x0A,0x4B,0x48, // 1919-1921
 0x5B,0x25,0xBC,0x06,0xA5,0x50,0x06,0xd4,0x45, // 1922-1924
 0x4A,0xdA,0xB8,0x02,0xB6,0x4d,0x09,0x57,0x42, // 1925-1927
 0x24,0x97,0xB7,0x04,0x97,0x4A,0x66,0x4B,0x3e, // 1928-1930

 0x0d,0x4A,0x51,0x0e,0xA5,0x46,0x56,0xd4,0xBA, // 1931-1933
 0x05,0xAd,0x4e,0x02,0xB6,0x44,0x39,0x37,0x38, // 1934-1936
 0x09,0x2e,0x4B,0x7C,0x96,0xBf,0x0C,0x95,0x53, // 1937-1939
 0x0d,0x4A,0x48,0x6d,0xA5,0x3B,0x0B,0x55,0x4f, // 1940-1942
 0x05,0x6A,0x45,0x4A,0xAd,0xB9,0x02,0x5d,0x4d, // 1943-1945

 0x09,0x2d,0x42,0x2C,0x95,0xB6,0x0A,0x95,0x4A, // 1946-1948
 0x7B,0x4A,0xBd,0x06,0xCA,0x51,0x0B,0x55,0x46, // 1949-1951
 0x55,0x5A,0xBB,0x04,0xdA,0x4e,0x0A,0x5B,0x43, // 1952-1954
 0x35,0x2B,0xB8,0x05,0x2B,0x4C,0x8A,0x95,0x3f, // 1955-1957
 0x0e,0x95,0x52,0x06,0xAA,0x48,0x7A,0xd5,0x3C, // 1958-1960
 
 0x0A,0xB5,0x4f,0x04,0xB6,0x45,0x4A,0x57,0x39, // 1961-1963
 0x0A,0x57,0x4d,0x05,0x26,0x42,0x3e,0x93,0x35, // 1964-1966
 0x0d,0x95,0x49,0x75,0xAA,0xBe,0x05,0x6A,0x51, // 1967-1969
 0x09,0x6d,0x46,0x54,0xAe,0xBB,0x04,0xAd,0x4f, // 1970-1972
 0x0A,0x4d,0x43,0x4d,0x26,0xB7,0x0d,0x25,0x4B, // 1973-1975
 
 0x8d,0x52,0xBf,0x0B,0x54,0x52,0x0B,0x6A,0x47, // 1976-1978
 0x69,0x6d,0x3C,0x09,0x5B,0x50,0x04,0x9B,0x45, // 1979-1981
 0x4A,0x4B,0xB9,0x0A,0x4B,0x4d,0xAB,0x25,0xC2, // 1982-1984
 0x06,0xA5,0x54,0x06,0xd4,0x49,0x6A,0xdA,0x3d, // 1985-1987
 0x0A,0xB6,0x51,0x09,0x37,0x46,0x54,0x97,0xBB, // 1988-1990
 
 0x04,0x97,0x4f,0x06,0x4B,0x44,0x36,0xA5,0x37, // 1991-1993
 0x0e,0xA5,0x4A,0x86,0xB2,0xBf,0x05,0xAC,0x53, // 1994-1996
 0x0A,0xB6,0x47,0x59,0x36,0xBC,0x09,0x2e,0x50, // 1997-1999
 0x0C,0x96,0x45,0x4d,0x4A,0xB8,0x0d,0x4A,0x4C, // 2000-2002
 0x0d,0xA5,0x41,0x25,0xAA,0xB6,0x05,0x6A,0x49, // 2003-2005
 
 0x7A,0xAd,0xBd,0x02,0x5d,0x52,0x09,0x2d,0x47, // 2006-2008
 0x5C,0x95,0xBA,0x0A,0x95,0x4e,0x0B,0x4A,0x43, // 2009-2011
 0x4B,0x55,0x37,0x0A,0xd5,0x4A,0x95,0x5A,0xBf, // 2012-2014
 0x04,0xBA,0x53,0x0A,0x5B,0x48,0x65,0x2B,0xBC, // 2015-2017
 0x05,0x2B,0x50,0x0A,0x93,0x45,0x47,0x4A,0xB9, // 2018-2020
 
 0x06,0xAA,0x4C,0x0A,0xd5,0x41,0x24,0xdA,0xB6, // 2021-2023
 0x04,0xB6,0x4A,0x69,0x57,0x3d,0x0A,0x4e,0x51, // 2024-2026
 0x0d,0x26,0x46,0x5e,0x93,0x3A,0x0d,0x53,0x4d, // 2027-2029
 0x05,0xAA,0x43,0x36,0xB5,0x37,0x09,0x6d,0x4B, // 2030-2032
 0xB4,0xAe,0xBf,0x04,0xAd,0x53,0x0A,0x4d,0x48, // 2033-2035
 
 0x6d,0x25,0xBC,0x0d,0x25,0x4f,0x0d,0x52,0x44, // 2036-2038
 0x5d,0xAA,0x38,0x0B,0x5A,0x4C,0x05,0x6d,0x41, // 2039-2041
 0x24,0xAd,0xB6,0x04,0x9B,0x4A,0x7A,0x4B,0xBe, // 2042-2044
 0x0A,0x4B,0x51,0x0A,0xA5,0x46,0x5B,0x52,0xBA, // 2045-2047
 0x06,0xd2,0x4e,0x0A,0xdA,0x42,0x35,0x5B,0x37, // 2048-2050
 
 0x09,0x37,0x4B,0x84,0x97,0xC1,0x04,0x97,0x53, // 2051-2053
 0x06,0x4B,0x48,0x66,0xA5,0x3C,0x0e,0xA5,0x4f, // 2054-2056
 0x06,0xB2,0x44,0x4A,0xB6,0x38,0x0A,0xAe,0x4C, // 2057-2059
 0x09,0x2e,0x42,0x3C,0x97,0x35,0x0C,0x96,0x49, // 2060-2062
 0x7d,0x4A,0xBd,0x0d,0x4A,0x51,0x0d,0xA5,0x45, // 2063-2065
 
 0x55,0xAA,0xBA,0x05,0x6A,0x4e,0x0A,0x6d,0x43, // 2066-2068
 0x45,0x2e,0xB7,0x05,0x2d,0x4B,0x8A,0x95,0xBf, // 2069-2071
 0x0A,0x95,0x53,0x0B,0x4A,0x47,0x6B,0x55,0x3B, // 2072-2074
 0x0A,0xd5,0x4f,0x05,0x5A,0x45,0x4A,0x5d,0x38, // 2075-2077
 0x0A,0x5B,0x4C,0x05,0x2B,0x42,0x3A,0x93,0xB6, // 2078-2080
 
 0x06,0x93,0x49,0x77,0x29,0xBd,0x06,0xAA,0x51, // 2081-2083
 0x0A,0xd5,0x46,0x54,0xdA,0xBA,0x04,0xB6,0x4e, // 2084-2086
 0x0A,0x57,0x43,0x45,0x27,0x38,0x0d,0x26,0x4A, // 2087-2089
 0x8e,0x93,0x3e,0x0d,0x52,0x52,0x0d,0xAA,0x47, // 2090-2092
 0x66,0xB5,0x3B,0x05,0x6d,0x4f,0x04,0xAe,0x45, // 2093-2095
 
 0x4A,0x4e,0xB9,0x0A,0x4d,0x4C,0x0d,0x15,0x41, // 2096-2098
 0x2d,0x92,0xB5};                              // 2099
//月份数据表
code uchar day_code1[9]={0x0,0x1f,0x3b,0x5a,0x78,0x97,0xb5,0xd4,0xf3};
code uint day_code2[3]={0x111,0x130,0x14e};
/*
函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
纪,c_sun=1为19世纪
调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
*/
bit c_moon;
data uchar year_moon,month_moon,day_moon,week;
/*子函数,用于读取数据表中农历月的大月或小月,如果该月为大返回1,为小返回0*/
bit get_moon_day(uchar month_p,uint table_addr)
{
uchar temp;
    switch (month_p){
        case 1:{temp=year_code[table_addr]&0x08;
             if (temp==0)return(0);else return(1);}
        case 2:{temp=year_code[table_addr]&0x04;
             if (temp==0)return(0);else return(1);}
        case 3:{temp=year_code[table_addr]&0x02;
             if (temp==0)return(0);else return(1);}
        case 4:{temp=year_code[table_addr]&0x01;
             if (temp==0)return(0);else return(1);}
        case 5:{temp=year_code[table_addr+1]&0x80;
             if (temp==0) return(0);else return(1);}
        case 6:{temp=year_code[table_addr+1]&0x40;
             if (temp==0)return(0);else return(1);}
        case 7:{temp=year_code[table_addr+1]&0x20;
             if (temp==0)return(0);else return(1);}
        case 8:{temp=year_code[table_addr+1]&0x10;
             if (temp==0)return(0);else return(1);}
        case 9:{temp=year_code[table_addr+1]&0x08;
             if (temp==0)return(0);else return(1);}
        case 10:{temp=year_code[table_addr+1]&0x04;
             if (temp==0)return(0);else return(1);}
        case 11:{temp=year_code[table_addr+1]&0x02;
             if (temp==0)return(0);else return(1);}
        case 12:{temp=year_code[table_addr+1]&0x01;
             if (temp==0)return(0);else return(1);}
        case 13:{temp=year_code[table_addr+2]&0x80;
             if (temp==0)return(0);else return(1);}
    }
}


/*
函数功能:输入BCD阳历数据,输出BCD阴历数据(只允许1901-2099年)
调用函数示例:Conversion(c_sun,year_sun,month_sun,day_sun)
如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
纪,c_sun=1为19世纪
调用函数后,原有数据不变,读c_moon,year_moon,month_moon,day_moon得出阴历BCD数据
*/
void Conversion(bit c,uchar year,uchar month,uchar day)
{ //c=0 为21世纪,c=1 为20世纪 输入输出数据均为BCD数据
    uchar temp1,temp2,temp3,month_p;
    uint temp4,table_addr;
    bit flag2,flag_y;
    temp1=year/16;   //BCD->hex 先把数据转换为十六进制
    temp2=year%16;
    year=temp1*10+temp2;
    temp1=month/16;
    temp2=month%16;
    month=temp1*10+temp2;
    temp1=day/16;
    temp2=day%16;
    day=temp1*10+temp2;


    //定位数据表地址
    if(c==0)
{                   
       table_addr=(year+0x64-1)*0x3;//*3是一年在数组中有3个字节
    }
    else 
{
       table_addr=(year-1)*0x3;
    }
    //定位数据表地址完成


    //取当年春节所在的公历月份
    temp1=year_code[table_addr+2]&0x60; 
    temp1=_cror_(temp1,5);
    //取当年春节所在的公历月份完成


    //取当年春节所在的公历日
    temp2=year_code[table_addr+2]&0x1f; 
    //取当年春节所在的公历日完成


    // 计算当年春节离当年元旦的天数,春节只会在公历1月或2月
    if(temp1==0x1)
{  
       temp3=temp2-1;  
    }  
    else
{
       temp3=temp2+0x1f-1;        
    }
    // 计算当年春节离当年元旦的天数完成


    //计算公历日离当年元旦的天数,为了减少运算,用了两个表
    //day_code1[9],day_code2[3]
    //如果公历月在九月或前,天数会少于0xff,用表day_code1[9],
    //在九月后,天数大于0xff,用表day_code2[3]
    //如输入公历日为8月10日,则公历日离元旦天数为day_code1[8-1]+10-1
    //如输入公历日为11月10日,则公历日离元旦天数为day_code2[11-10]+10-1
    if (month<10)
{ 
       temp4=day_code1[month-1]+day-1;
    }
    else
{
        temp4=day_code2[month-10]+day-1;
    }
    if ((month>0x2)&&(year%0x4==0))
{  //如果公历月大于2月并且该年的2月为闰月,天数加1
        temp4+=1;
    }
    //计算公历日离当年元旦的天数完成


    //判断公历日在春节前还是春节后
    if (temp4>=temp3)
{ //公历日在春节后或就是春节当日使用下面代码进行运算
        temp4-=temp3;
        month=0x1;
        month_p=0x1;  //month_p为月份指向,公历日在春节前或就是春节当日month_p指向首月
        flag2=get_moon_day(month_p,table_addr); //检查该农历月为大小还是小月,大月返回1,小月返回0
        flag_y=0;
        if(flag2==0)temp1=0x1d; //小月29天
        else temp1=0x1e; //大小30天
        temp2=year_code[table_addr]&0xf0;
        temp2=_cror_(temp2,4);  //从数据表中取该年的闰月月份,如为0则该年无闰月
        while(temp4>=temp1)
{
            temp4-=temp1;
            month_p+=1;
            if(month==temp2){
            flag_y=~flag_y;
            if(flag_y==0)month+=1;
            }
            else month+=1;
            flag2=get_moon_day(month_p,table_addr);
            if(flag2==0)temp1=0x1d;
            else temp1=0x1e;
        }
        day=temp4+1;
    }
    else
{  //公历日在春节前使用下面代码进行运算
temp3-=temp4;
if (year==0x0)
{year=0x63;c=1;}
else 
year-=1;
table_addr-=0x3;
month=0xc;
temp2=year_code[table_addr]&0xf0;
temp2=_cror_(temp2,4);
if (temp2==0)
month_p=0xc; 
else 
month_p=0xd; //
/*
month_p为月份指向,如果当年有闰月,一年有十三个月,月指向13,无闰月指向12
*/
flag_y=0;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
while(temp3>temp1)
{
temp3-=temp1;
month_p-=1;
if(flag_y==0)month-=1;
if(month==temp2)flag_y=~flag_y;
flag2=get_moon_day(month_p,table_addr);
if(flag2==0)temp1=0x1d;
else temp1=0x1e;
}
day=temp1-temp3+1;
    }

    c_moon=c;                 //HEX->BCD ,运算结束后,把数据转换为BCD数据
    temp1=year/10;
    temp1=_crol_(temp1,4);
    temp2=year%10;
    year_moon=temp1|temp2;
    temp1=month/10;
    temp1=_crol_(temp1,4);
    temp2=month%10;
    month_moon=temp1|temp2;
    temp1=day/10;
    temp1=_crol_(temp1,4);
    temp2=day%10;
    day_moon=temp1|temp2;
}


/*
函数功能:输入BCD阳历数据,输出BCD星期数据(只允许1901-2099年)
调用函数示例:Conver_week(c_sun,year_sun,month_sun,day_sun)
如:计算2004年10月16日Conversion(0,0x4,0x10,0x16);
c_sun,year_sun,month_sun,day_sun均为BCD数据,c_sun为世纪标志位,c_sun=0为21世
纪,c_sun=1为19世纪
调用函数后,原有数据不变,读week得出阴历BCD数据
*/
code uchar table_week[12]={0,3,3,6,1,4,6,2,5,0,3,5}; //月修正数据表
/*
算法:日期+年份+所过闰年数+月较正数之和除7 的余数就是星期但如果是在
闰年又不到3 月份上述之和要减一天再除7
星期数为0 
*/
void Conver_week(bit c,uchar year,uchar month,uchar day)
{//c=0 为21世纪,c=1 为19世纪 输入输出数据均为BCD数据
    uchar temp1,temp2;
    temp1=year/16;   //BCD->hex 先把数据转换为十六进制
    temp2=year%16;
    year=temp1*10+temp2;
    temp1=month/16;
    temp2=month%16;
    month=temp1*10+temp2;
    temp1=day/16;
    temp2=day%16;
    day=temp1*10+temp2;
    if (c==0){year+=0x64;}  //如果为21世纪,年份数加100
    temp1=year/0x4;  //所过闰年数只算1900年之后的
    temp2=year+temp1;
    temp2=temp2%0x7;  //为节省资源,先进行一次取余,避免数大于0xff,避免使用整型数据
    temp2=temp2+day+table_week[month-1];
    if (year%0x4==0&&month<3)
temp2-=1;
    week=temp2%0x7;
}


//test
uchar c_sun,year_sun,month_sun,day_sun;
void main()
{
c_sun=0;
year_sun=0x15;
month_sun=0x8;
day_sun=0x7;
// Conver_week(c_sun,year_sun,month_sun,day_sun);
Conversion(c_sun,year_sun,month_sun,day_sun);
while(1);
}