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计算农历的函数

王朝other·作者佚名  2006-01-09
窄屏简体版  字體: |||超大  

没仔细看过,网上搜来的代码

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发信人: top (英语六级&&PHP), 信区: Programming

标 题: 阴阳历算法

发信站: 燕赵 BBS (Tue Apr 8 12:14:16 2003), 转信

http://linux.tcpip.com.cn

阴阳历算法

发言者:kent 发言时间:2001-11-08 12:03:11

程序为:

/*

prototype: int calconv( struct convdate * );

struct convdate

{

int source; ==0 则输入日期为西历, !=0 则输入为农历

int solaryear; 输出或输入之西历年份

int solarmonth; 西历月

int solardate; 西历日

int lunaryear; 输出或输入之农历年份

int lunarmonth; 农历月

int lunarmonth; 农历月

int lunardate; 农历日

int weekday; 该日为星期几 ( 0==星期日, 1==星期一, ... )

int kan; 该日天干 ( 0==甲, 1==乙, ..., 9==癸 )

int chih; 该日地支 ( 0==子, 1==丑, ..., 11==亥 )

};

呼叫时须设定 souce 的值, 若为 0 则为西历转农历, 否则为农历转西历. 然後视

输入为西历或农历来设定西历或农历的年月日. 转换後的年月日会填入结构中( 农

历或西历 ), 以及该日为星期几, 天干地支.

若函式的返回值为 0 表示没有错误, 1 为输入之年份错误, 2 为输入之月份错误

,

3 为输入之日期错误.

输入之西历年须在 1937 - 2031 间

输入之农历年须在 1936 - 2030 间

若须扩充, 则增加 lunarcal[]

*/

#define firstyear 1936 /* the first year in lunarcal[] */

struct convdate

{

int source;

int source;

int solaryear;

int solarmonth;

int solardate;

int lunaryear;

int lunarmonth;

int lunardate;

int weekday;

int kan;

int chih;

};

struct taglunarcal

{

int basedays; /* 到西历 1 月 1 日到农历正月初一的累积日数 */

int intercalation; /* 闰月月份. 0==此年没有闰月 */

int baseweekday; /* 此年西历 1 月 1 日为星期几再减 1 */

int basekanchih; /* 此年西历 1 月 1 日之干支序号减 1 */

int monthdays[13]; /* 此农历年每月之大小, 0==小月(29日), 1==大月(30日

)*/

};

struct taglunarcal lunarcal[] = {

{ 23, 3, 2, 17, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0 }, /* 1936 */

{ 23, 3, 2, 17, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0 }, /* 1936 */

{ 41, 0, 4, 23, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1 },

{ 30, 7, 5, 28, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1 },

{ 49, 0, 6, 33, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 },

{ 38, 0, 0, 38, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 }, /* 1940 */

{ 26, 6, 2, 44, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0 },

{ 45, 0, 3, 49, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 },

{ 35, 0, 4, 54, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 },

{ 24, 4, 5, 59, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1 }, /* 1944 */

{ 43, 0, 0, 5, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1 },

{ 32, 0, 1, 10, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1 },

{ 21, 2, 2, 15, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 },

{ 40, 0, 3, 20, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 }, /* 1948 */

{ 28, 7, 5, 26, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 47, 0, 6, 31, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 36, 0, 0, 36, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 },

{ 26, 5, 1, 41, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 }, /* 1952 */

{ 44, 0, 3, 47, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1 },

{ 33, 0, 4, 52, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0 },

{ 23, 3, 5, 57, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1 },

{ 42, 0, 6, 2, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1 }, /* 1956 */

{ 30, 8, 1, 8, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0 },

{ 48, 0, 2, 13, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0 },

{ 48, 0, 2, 13, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 0 },

{ 38, 0, 3, 18, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 },

{ 27, 6, 4, 23, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0 }, /* 1960 */

{ 45, 0, 6, 29, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0 },

{ 35, 0, 0, 34, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 },

{ 24, 4, 1, 39, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 },

{ 43, 0, 2, 44, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 }, /* 1964 */

{ 32, 0, 4, 50, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1 },

{ 20, 3, 5, 55, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 },

{ 39, 0, 6, 0, 1, 1, 0, 1, 1, 0, 0, 1, 0, 1, 0, 1, 0 },

{ 29, 7, 0, 5, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1 }, /* 1968 */

{ 47, 0, 2, 11, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 },

{ 36, 0, 3, 16, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0 },

{ 26, 5, 4, 21, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0, 1 },

{ 45, 0, 5, 26, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1 }, /* 1972 */

{ 33, 0, 0, 32, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1 },

{ 22, 4, 1, 37, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1 },

{ 41, 0, 2, 42, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1 },

{ 30, 8, 3, 47, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 }, /* 1976 */

{ 48, 0, 5, 53, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1 },

{ 37, 0, 6, 58, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 },

{ 27, 6, 0, 3, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0 },

{ 46, 0, 1, 8, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0 }, /* 1980 */

{ 46, 0, 1, 8, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0 }, /* 1980 */

{ 35, 0, 3, 14, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1 },

{ 24, 4, 4, 19, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1 },

{ 43, 0, 5, 24, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1 },

{ 32, 10, 6, 29, 1, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1 }, /* 1984 */

{ 50, 0, 1, 35, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 },

{ 39, 0, 2, 40, 0, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1 },

{ 28, 6, 3, 45, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1, 0, 0 },

{ 47, 0, 4, 50, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 }, /* 1988 */

{ 36, 0, 6, 56, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 1, 0 },

{ 26, 5, 0, 1, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 1 },

{ 45, 0, 1, 6, 0, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0 },

{ 34, 0, 2, 11, 0, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0 }, /* 1992 */

{ 22, 3, 4, 17, 0, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 },

{ 40, 0, 5, 22, 1, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0 },

{ 30, 8, 6, 27, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1, 0, 1 },

{ 49, 0, 0, 32, 0, 1, 0, 1, 1, 0, 1, 0, 1, 1, 0, 0, 1 }, /* 1996 */

{ 37, 0, 2, 38, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 },

{ 27, 5, 3, 43, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0, 1 },

{ 46, 0, 4, 48, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1 },

{ 35, 0, 5, 53, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1 }, /* 2000 */

{ 23, 4, 0, 59, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 42, 0, 1, 4, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 42, 0, 1, 4, 1, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 31, 0, 2, 9, 1, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0 },

{ 21, 2, 3, 14, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1 }, /* 2004 */

{ 39, 0, 5, 20, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1 },

{ 28, 7, 6, 25, 1, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 1 },

{ 48, 0, 0, 30, 0, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 1 },

{ 37, 0, 1, 35, 1, 0, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1 }, /* 2008 */

{ 25, 5, 3, 41, 1, 1, 0, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 },

{ 44, 0, 4, 46, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1 },

{ 33, 0, 5, 51, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 },

{ 22, 4, 6, 56, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 }, /* 2012 */

{ 40, 0, 1, 2, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0 },

{ 30, 9, 2, 7, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 },

{ 49, 0, 3, 12, 0, 1, 0, 0, 1, 0, 1, 1, 1, 0, 1, 0, 1 },

{ 38, 0, 4, 17, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0 }, /* 2016 */

{ 27, 6, 6, 23, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1 },

{ 46, 0, 0, 28, 0, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 0 },

{ 35, 0, 1, 33, 0, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 },

{ 24, 4, 2, 38, 0, 1, 1, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1 }, /* 2020 */

{ 42, 0, 4, 44, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 },

{ 31, 0, 5, 49, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0 },

{ 21, 2, 6, 54, 0, 1, 0, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1 },

{ 40, 0, 0, 59, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 }, /* 2024 */

{ 40, 0, 0, 59, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 1, 0, 1 }, /* 2024 */

{ 28, 6, 2, 5, 1, 0, 1, 0, 0, 1, 0, 1, 0, 1, 1, 1, 0 },

{ 47, 0, 3, 10, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 1, 0, 1 },

{ 36, 0, 4, 15, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0, 1 },

{ 25, 5, 5, 20, 1, 1, 1, 0, 1, 0, 0, 1, 0, 0, 1, 1, 0 }, /* 2028 */

{ 43, 0, 0, 26, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 },

{ 32, 0, 1, 31, 1, 1, 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 0 },

{ 22, 3, 2, 36, 0, 1, 1, 0, 1, 0, 1, 1, 0, 1, 0, 1, 0 } };

#define lastyear (firstyear+sizeof(lunarcal)/sizeof(struct

taglunarcal)-1)

/* 西历年每月之日数 */

int solarcal[12] = { 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31 };

/* 西历年每月之累积日数, 平年与闰年 */

int solardays[2][14] = {

{ 0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334, 365, 396 },

{ 0, 31, 60, 91, 121, 152, 182, 213, 244, 274, 305, 335, 366, 397 } };

/* 求此西历年是否为闰年, 返回 0 为平年, 1 为闰年 */

int getleap( int year )

{

if ( year % 400 == 0 )

if ( year % 400 == 0 )

return 1;

else if ( year % 100 == 0 )

return 0;

else if ( year % 4 == 0 )

return 1;

else

return 0;

}

/* 西历农历转换 */

int calconv( struct convdate *cd )

{

int leap, d, sm, y, im, l1, l2, acc, i, lm, kc;

if ( cd->source == 0 ) /* solar */

{

if ( cd->solaryear <= firstyear || cd->solaryear > lastyear )

return 1;

sm = cd->solarmonth - 1;

if ( sm < 0 || sm > 11 )

return 2;

leap = getleap( cd->solaryear );

if ( sm == 1 )

if ( sm == 1 )

d = leap + 28;

else

d = solarcal[sm];

if ( cd->solardate < 1 || cd->solardate > d )

return 3;

y = cd->solaryear - firstyear;

acc = solardays[leap][sm] + cd->solardate;

cd->weekday = ( acc + lunarcal[y].baseweekday ) % 7;

kc = acc + lunarcal[y].basekanchih;

cd->kan = kc % 10;

cd->chih = kc % 12;

if ( acc <= lunarcal[y].basedays )

{

y--;

cd->lunaryear = cd->solaryear - 1;

leap = getleap( cd->lunaryear );

sm += 12;

acc = solardays[leap][sm] + cd->solardate;

}

else

cd->lunaryear = cd->solaryear;

l1 = lunarcal[y].basedays;

l1 = lunarcal[y].basedays;

for ( i=0; i<13; i++ )

{

l2 = l1 + lunarcal[y].monthdays[i] + 29;

if ( acc <= l2 )

break;

l1 = l2;

}

cd->lunarmonth = i + 1;

cd->lunardate = acc - l1;

im = lunarcal[y].intercalation;

if ( im != 0 && cd->lunarmonth > im )

{

cd->lunarmonth--;

if ( cd->lunarmonth == im )

cd->lunarmonth = -im;

}

if ( cd->lunarmonth > 12 )

cd->lunarmonth -= 12;

}

else /* lunar */

{

if ( cd->lunaryear < firstyear || cd->lunaryear >= lastyear )

if ( cd->lunaryear < firstyear || cd->lunaryear >= lastyear )

return 1;

y = cd->lunaryear - firstyear;

im = lunarcal[y].intercalation;

lm = cd->lunarmonth;

if ( lm < 0 )

{

if ( lm != -im )

return 2;

}

else if ( lm < 1 || lm > 12 )

return 2;

if ( im != 0 )

{

if ( lm > im )

lm++;

else if ( lm == -im )

lm = im + 1;

}

lm--;

if ( cd->lunardate > lunarcal[y].monthdays[lm] + 29 )

return 3;

acc = lunarcal[y].basedays;

acc = lunarcal[y].basedays;

for ( i=0; i acc += lunarcal[y].monthdays[i] + 29;

acc += cd->lunardate;

leap = getleap( cd->lunaryear );

for ( i=13; i>=0; i-- )

if ( acc > solardays[leap][i] )

break;

cd->solardate = acc - solardays[leap][i];

if ( i <= 11 )

{

cd->solaryear = cd->lunaryear;

cd->solarmonth = i + 1;

}

else

{

cd->solaryear = cd->lunaryear + 1;

cd->solarmonth = i - 11;

}

leap = getleap( cd->solaryear );

y = cd->solaryear - firstyear;

acc = solardays[leap][cd->solarmonth-1] + cd->solardate;

cd->weekday = ( acc + lunarcal[y].baseweekday ) % 7;

kc = acc + lunarcal[y].basekanchih;

{

cd->kan = kc % 10;

cd->chih = kc % 12;

}

return 0;

}

 
 
 
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