typedef struct tagClock
{ UINT8 minute; //分钟 UINT8 hour; // 小时 UINT8 day; //天 UINT8 month; //月 UINT8 year; //年 UINT8 week; //星期 UINT8 dst_flag; //ST，DST标志 UINT8 second; //秒}CLOCK;
// 星期修正表 static const UINT8 WEEKDAY_KEYNO[15] = { // all add 7-2 ,to prevent 2000-1-1 calc week result is error 0, // 0, /* dummy*/ 6, // 1, /* January */ 9, // 4, /* February */ 9, // 4, /* March */ 5, // 0, /* April */ 7, // 2, /* May */ 10, // 5, /* June */ 5, // 0, /* July */ 8, // 3, /* August */ 11, // 6, /* September */ 6, // 1, /* October */ 9, // 4, /* November */ 11, // 6, /* December */ 5, // 0, /* leap January */ 8 // 3, /* leap February */}; /********************************************************************************************************** Routine Name: cal_weekday Form: void cal_weekday(CLOCK* self) Parameters: CLOCK* self self----point to CLOCK struct first address Return Value: void Description: calc week ------calc range is 00yr- 1-1 ~ 99 yr 12-31，2000年基数被省略***********************************************************************************************************/ void cal_weekday(CLOCK* self){ CLOCK *ptr = self; UINT8 rm_week_i; rm_week_i= WEEKDAY_KEYNO[ptr->month]; //查星期修正表 if((ptr->monthyear & 0x03)==0)) //润年的1，2月处理 { rm_week_i--; } // so modify it to (last 2 yr digit + 1/4(last 2 yr digit) + days + keyno ) mod 7 // the remainder is the result: 0=sunday, 1=monday, 2=Tue .... ptr->week=((rm_week_i + ptr->day+ ptr->year+(ptr->year>>2))%7); }
