声明：代码来源于网络，只是改的易于阅读与理解而已
#include
#include
typedef struct _lunar{
int year;
int month;
int day;
int is_leap;
} lunar_t;
/*
bit23 bit22 bit21 bit20:表示当年闰月月份，值为0 为则表示当年无闰月
bit19 bit18 bit17 bit16 bit15 bit14 bit13 bit12 bit11 bit10 bit9 bit8 bit7
1 2 3 4 5 6 7 8 9 10 11 12 13
农历1-13 月大小 。月份对应位为1，农历月大(30 天),为0 表示小(29 天)
bit6 bit5 bit4 bit3 bit2 bit1 bit0
春节的公历月份 春节的公历日期
*/
unsigned int lunar200y[199] = {
0x04AE53,0x0A5748,0x5526BD,0x0D2650,0x0D9544,0x46AAB9,0x056A4D,0x09AD42,0x24AEB6,0x04AE4A,/*1901-1910*/
0x6A4DBE,0x0A4D52,0x0D2546,0x5D52BA,0x0B544E,0x0D6A43,0x296D37,0x095B4B,0x749BC1,0x049754,/*1911-1920*/
0x0A4B48,0x5B25BC,0x06A550,0x06D445,0x4ADAB8,0x02B64D,0x095742,0x2497B7,0x04974A,0x664B3E,/*1921-1930*/
0x0D4A51,0x0EA546,0x56D4BA,0x05AD4E,0x02B644,0x393738,0x092E4B,0x7C96BF,0x0C9553,0x0D4A48,/*1931-1940*/
0x6DA53B,0x0B554F,0x056A45,0x4AADB9,0x025D4D,0x092D42,0x2C95B6,0x0A954A,0x7B4ABD,0x06CA51,/*1941-1950*/
0x0B5546,0x555ABB,0x04DA4E,0x0A5B43,0x352BB8,0x052B4C,0x8A953F,0x0E9552,0x06AA48,0x6AD53C,/*1951-1960*/
0x0AB54F,0x04B645,0x4A5739,0x0A574D,0x052642,0x3E9335,0x0D9549,0x75AABE,0x056A51,0x096D46,/*1961-1970*/
0x54AEBB,0x04AD4F,0x0A4D43,0x4D26B7,0x0D254B,0x8D52BF,0x0B5452,0x0B6A47,0x696D3C,0x095B50,/*1971-1980*/
0x049B45,0x4A4BB9,0x0A4B4D,0xAB25C2,0x06A554,0x06D449,0x6ADA3D,0x0AB651,0x093746,0x5497BB,/*1981-1990*/
0x04974F,0x064B44,0x36A537,0x0EA54A,0x86B2BF,0x05AC53,0x0AB647,0x5936BC,0x092E50,0x0C9645,/*1991-2000*/
0x4D4AB8,0x0D4A4C,0x0DA541,0x25AAB6,0x056A49,0x7AADBD,0x025D52,0x092D47,0x5C95BA,0x0A954E,/*2001-2010*/
0x0B4A43,0x4B5537,0x0AD54A,0x955ABF,0x04BA53,0x0A5B48,0x652BBC,0x052B50,0x0A9345,0x474AB9,/*2011-2020*/
0x06AA4C,0x0AD541,0x24DAB6,0x04B64A,0x69573D,0x0A4E51,0x0D2646,0x5E933A,0x0D534D,0x05AA43,/*2021-2030*/
0x36B537,0x096D4B,0xB4AEBF,0x04AD53,0x0A4D48,0x6D25BC,0x0D254F,0x0D5244,0x5DAA38,0x0B5A4C,/*2031-2040*/
0x056D41,0x24ADB6,0x049B4A,0x7A4BBE,0x0A4B51,0x0AA546,0x5B52BA,0x06D24E,0x0ADA42,0x355B37,/*2041-2050*/
0x09374B,0x8497C1,0x049753,0x064B48,0x66A53C,0x0EA54F,0x06B244,0x4AB638,0x0AAE4C,0x092E42,/*2051-2060*/
0x3C9735,0x0C9649,0x7D4ABD,0x0D4A51,0x0DA545,0x55AABA,0x056A4E,0x0A6D43,0x452EB7,0x052D4B,/*2061-2070*/
0x8A95BF,0x0A9553,0x0B4A47,0x6B553B,0x0AD54F,0x055A45,0x4A5D38,0x0A5B4C,0x052B42,0x3A93B6,/*2071-2080*/
0x069349,0x7729BD,0x06AA51,0x0AD546,0x54DABA,0x04B64E,0x0A5743,0x452738,0x0D264A,0x8E933E,/*2081-2090*/
0x0D5252,0x0DAA47,0x66B53B,0x056D4F,0x04AE45,0x4A4EB9,0x0A4D4C,0x0D1541,0x2D92B5 /*2091-2099*/
};
int is_gregorian_leap(int year)
{
return( ( ((year % 4) == 0)&&((year % 100) !=0) ) || ( (year % 400) ==0) );
}
#define MIN_YEAR 1901
#define MAX_YEAR 2099
//0x04AE53
//
//0000 0100 1010 1110 0 101 0011
int lunarLeapMonth(int y)
{
return((lunar200y[y-MIN_YEAR] & 0xf00000) >>20);
}
int lunarMonthDays(int y, int m)
{
return( (lunar200y[y-MIN_YEAR] & (0x80000>>(m-1)))? 30: 29 );
}
int lunarLeapMonthDays(int y)
{
if(lunarLeapMonth(y))
{
return( (lunar200y[y-MIN_YEAR] & (0x80000>>(lunarLeapMonth(y)-1)))? 30: 29 );
}
else
{
return 0;
}
}
int lunarSpringDate(int y, int*solar_m, int* solar_d)
{
if(!solar_m||!solar_d)
return -1;
*solar_m =(lunar200y[y-MIN_YEAR] & 0x0060) >> 5;
*solar_d = lunar200y[y-MIN_YEAR]&0x1f;
return 0;
}
int lunarDateCheck(lunar_t lunar)
{
int leap = 0;
if ((lunar.year MAX_YEAR))
{
return -1;
}
if ((lunar.month <1) || (lunar.month > 12))
{
return -1;
}
if ((lunar.day <1) || (lunar.day > 30)) //中国的月最多30天
{
return -1;
}
if(lunarMonthDays(lunar.year,lunar.month) MAX_YEAR))
{
return -1;
}
if ((month <1) || (month > 12))
{
return -1;
}
if ((day <1) || (day > 31))
{
return -1;
}
if(mOnth==2)
{
if(is_gregorian_leap(year))// 是闰年
{
if(day>29)
return -1;
}
else
{
if(day>28)
return -1;
}
}
return 0;
}
int monthTotal[13] = {0,31,59,90,120,151,181,212,243,273,304,334,365};
int toSolar(lunar_t lunar, int* y, int* m, int*d)
{
int year = lunar.year,
mOnth= lunar.month,
day = lunar.day;
int byNow, xMonth, i;
int spring_solar_d;
int spring_solar_m;
if(lunarDateCheck(lunar) ==-1)
return -1;
if(!y||!m||!d)
return -1;
lunarSpringDate(year,&spring_solar_m,&spring_solar_d);
byNow = spring_solar_d - 1;
if( spring_solar_m == 2)
byNow += 31;
for(i = 1; i xMonth ||(mOnth==xMonth && lunar.is_leap == 1)) {
byNow += lunarLeapMonthDays(year);
}
}
if(byNow > 366 ||(year%4!=0 && byNow == 365)){
year += 1;
if(year%4==0)
byNow -= 366;
else
byNow -= 365;
}
for(i=1; i <= 13; i ++){
if(monthTotal[i] >= byNow){
mOnth= i;
break;
}
}
*d = byNow - monthTotal[month-1];
*m = month;
*y = year;
return 0;
}
int toLunar(int year, int month, int day , lunar_t * lunar)
{
int bySpring,bySolar,daysPerMonth;
int index,flag;
int spring_solar_d;
int spring_solar_m;
if(!lunar)
return -1;
if(solarDateCheck(year,month,day) ==-1)
return -1;
//bySpring 记录春节离当年元旦的天数。
//bySolar 记录阳历日离当年元旦的天数。
lunarSpringDate(year,&spring_solar_m,&spring_solar_d);
if( spring_solar_m == 1)
bySpring = spring_solar_d - 1;
else
bySpring = spring_solar_d - 1 + 31;
bySolar = monthTotal[month-1] + day - 1;
if( (!(year % 4)) && (month > 2))
bySolar++;
//daysPerMonth记录大小月的天数 29 或30
//index 记录从哪个月开始来计算。
//flag 是用来对闰月的特殊处理。
//判断阳历日在春节前还是春节后
if (bySolar >= bySpring) /*/阳历日在春节后（含春节那天）*/
{
bySolar -= bySpring;
mOnth= 1;
flag = 0;
daysPerMOnth=lunarMonthDays(year,month);
while(bySolar >= daysPerMonth)
{
bySolar -= daysPerMonth;
if(mOnth== lunarLeapMonth(year) )
{
flag = ~flag;
if(flag == 0)
{
month++;
}
}
else
{
month++;
}
daysPerMOnth=lunarMonthDays(year,month);
}
day = bySolar + 1;
}
else
{ //阳历日在春节前
bySpring -= bySolar;
year--;
mOnth= 12;
if ( lunarLeapMonth(year) == 0)
index = 12;
else
index = 13;
flag = 0;
daysPerMOnth= lunarMonthDays(year, index );
while(bySpring > daysPerMonth)
{
bySpring -= daysPerMonth;
index--;
if(flag == 0)
month--;
if(mOnth== lunarLeapMonth(year))
{
flag =!flag;
}
daysPerMOnth= lunarMonthDays(year, index );
}
day = daysPerMonth - bySpring + 1;
}
lunar->day = day;
lunar->mOnth= month;
lunar->year = year;
if(mOnth== lunarLeapMonth(year))
lunar->is_leap = 1;
else
lunar->is_leap = 0;
return 0;
}
int main(int argc, char*argv[])
{
const char *ChDay[] = {"*","初一","初二","初三","初四","初五",
"初六","初七","初八","初九","初十",
"十一","十二","十三","十四","十五",
"十六","十七","十八","十九","二十",
"廿一","廿二","廿三","廿四","廿五",
"廿六","廿七","廿八","廿九","三十"};
const char *ChMonth[] = {"*","正","二","三","四","五","六","七","八","九","十","十一","腊"};
int year,month,day;
#if 0
lunar_t olunar = {
.year = 2009,
.mOnth= 5,
.day = 17,
.is_leap=1, //1表示闰月,0表示平月
};
#else
lunar_t olunar = {
.year = 1985,
.mOnth= 1,
.day = 11,
.is_leap=0, //1表示闰月,0表示平月
};
#endif
lunar_t lunar;
if(toSolar(olunar, &year,&month,&day)==0)
{
printf("Lunar: %d-%s-%s",olunar.year,ChMonth[olunar.month],ChDay[olunar.day]);
printf(" =>Solar: %d-%d-%d\n",year,month,day);
}
if(toLunar(year,month,day, &lunar)==0)
{
printf("Solar: %d-%02d-%02d",year,month,day);
printf(" =>Lunar: %d-%s-%s\n",lunar.year,ChMonth[lunar.month],ChDay[lunar.day]);
}
printf("%d\r\n",lunarLeapMonth(2015));
printf("%d\r\n",lunarMonthDays(2015,1));
printf("%d\r\n",lunarMonthDays(2015,2));
printf("%d\r\n",lunarMonthDays(2015,3));
printf("%d\r\n",lunarMonthDays(1015,5));
lunarSpringDate(2015,&month,&day);
printf("springDate is %d - %d\r\n",month,day);
return 0;
}
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