万年历算法.doc

万年历算法 一、 阳历算法 具体算法见函数Void get_solar_day_date(void)，这样阳历日历的星期排法就确定了。 表1： 月份 1 2 3 4 5 6 7 8 9 10 11 12 闰年 31 29 31 30 31 30 31 31 30 31 30 31 非闰年 31 28 31 30 31 30 31 31 30 31 30 31 变量定义： Public: Unsigned int temp_total_day; Unsigned char gc_solar_calendar_year; Unsigned char gc_solar_calendar_month; Unsigned char gc_solar_calendar_date; Unsigned char gc_lunar_calendar_year; Unsigned char gc_lunar_calendar_month; Unsigned char gc_lunar_calendar_date; Unsigned char start_day_of_week； 说明：函数get_solar_day_date(void)的输入变量：gc_solar_calendar_year和gc_solar_calendar_month 输出变量：start_day_of_week和temp_total_day Void get_solar_day_date(void) { unsigned char temp01; /*calculate what day is the day of the current month and year. Mon~Sun?*/ /*条件初始化二次，减少运算数据量. temp_total_day 是int型变量*/ start_day_of_week = 2; temp_total_day = 0;calculate_temp = 1; if(gc_solar_calendar_year 99) {start_day_of_week = 6;calculate_temp = 100;} for(temp01 = calculate_temp; temp01gc_solar_calendar_year; temp01++) { if(temp01%4 == 0){start_day_of_week +=2;temp_total_day += 366; } else {start_day_of_week +=1;temp_total_day += 365;}} for(temp01 = 1;temp01gc_solar_calendar_month;temp01++) { switch(temp01) {case 1,3,5,7,8,10,12: start_day_of_week +=3;temp_total_day +=31;break; case 2: if(((gc_solar_calendar_year%4) == 0)(gc_solar_calendar_year != 200)) {start_day_of_week +=1; temp_total_day +=29;} else {start_day_of_week +=0;temp_total_day +=28;} break; case 4,6,9,11: start_day_of_week +=2; temp_total_day +=30; break;}} start_day_of_week %=7; /*-end of calculate what day is the day(Mon~Sun?) and total day --*/ } 二、 阴历算法 200年需要200 × 2 = 400个字节，构成阴历压缩数据表lunar_calendar_month_table[]如下： const char lunar_calendar_month_table[]={ //从阴历年1900年到2100年 /*the total day of each month pointer */ /* from 1901~2100*/ /* (0110)110000001001 (0110)leap month,110000001001 lunar month total day: 1:29 0:30*/ 0x00,0x04,0xad,0x08,0x5a,0x01,0xd5,0x54,0xb4,0x09,0x64,0x05,0x59,0x45, 0x95,0x0a,0xa6,0x04,0x55,0x24,0xad,0x08,0x5a,0x62