#ifndef _LINUX_TIME_H #define _LINUX_TIME_H #include <linux/types.h> #define _DEFUN(a,b,c) a(c) #define _CONST const #define _AND , #define _REENT_ONLY #define SECSPERMIN 60L #define MINSPERHOUR 60L #define HOURSPERDAY 24L #define SECSPERHOUR (SECSPERMIN * MINSPERHOUR) #define SECSPERDAY (SECSPERHOUR * HOURSPERDAY) #define DAYSPERWEEK 7 #define MONSPERYEAR 12 #define YEAR_BASE 1900 #define EPOCH_YEAR 1970 #define EPOCH_WDAY 4 #define isleap(y) ((((y) % 4) == 0 && ((y) % 100) != 0) || ((y) % 400) == 0) /* Used by other time functions. */ struct tm { int tm_sec; /* Seconds. [0-60] (1 leap second) */ int tm_min; /* Minutes. [0-59] */ int tm_hour; /* Hours. [0-23] */ int tm_mday; /* Day. [1-31] */ int tm_mon; /* Month. [0-11] */ int tm_year; /* Year - 1900. */ int tm_wday; /* Day of week. [0-6] */ int tm_yday; /* Days in year.[0-365] */ int tm_isdst; /* DST. [-1/0/1]*/ # ifdef __USE_BSD long int tm_gmtoff; /* Seconds east of UTC. */ __const char *tm_zone; /* Timezone abbreviation. */ # else long int __tm_gmtoff; /* Seconds east of UTC. */ __const char *__tm_zone; /* Timezone abbreviation. */ # endif }; static inline char * _DEFUN (asctime_r, (tim_p, result), _CONST struct tm *tim_p _AND char *result) { static _CONST char day_name[7][3] = { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" }; static _CONST char mon_name[12][3] = { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" }; sprintf (result, "%.3s %.3s %.2d %.2d:%.2d:%.2d %d\n", day_name[tim_p->tm_wday], mon_name[tim_p->tm_mon], tim_p->tm_mday, tim_p->tm_hour, tim_p->tm_min, tim_p->tm_sec, 1900 + tim_p->tm_year); return result; } static inline struct tm * _DEFUN (localtime_r, (tim_p, res), _CONST time_t * tim_p _AND struct tm *res) { static _CONST int mon_lengths[2][MONSPERYEAR] = { {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31}, {31, 29, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31} } ; static _CONST int year_lengths[2] = { 365, 366 } ; long days, rem; int y; int yleap; _CONST int *ip; days = ((long) *tim_p) / SECSPERDAY; rem = ((long) *tim_p) % SECSPERDAY; while (rem < 0) { rem += SECSPERDAY; --days; } while (rem >= SECSPERDAY) { rem -= SECSPERDAY; ++days; } /* compute hour, min, and sec */ res->tm_hour = (int) (rem / SECSPERHOUR); rem %= SECSPERHOUR; res->tm_min = (int) (rem / SECSPERMIN); res->tm_sec = (int) (rem % SECSPERMIN); /* compute day of week */ if ((res->tm_wday = ((EPOCH_WDAY + days) % DAYSPERWEEK)) < 0) res->tm_wday += DAYSPERWEEK; /* compute year & day of year */ y = EPOCH_YEAR; if (days >= 0) { for (;;) { yleap = isleap(y); if (days < year_lengths[yleap]) break; y++; days -= year_lengths[yleap]; } } else { do { --y; yleap = isleap(y); days += year_lengths[yleap]; } while (days < 0); } res->tm_year = y - YEAR_BASE; res->tm_yday = days; ip = mon_lengths[yleap]; for (res->tm_mon = 0; days >= ip[res->tm_mon]; ++res->tm_mon) days -= ip[res->tm_mon]; res->tm_mday = days + 1; /* set daylight saving time flag */ res->tm_isdst = -1; return (res); } static inline char * _DEFUN (ctime_r, (tim_p, result), _CONST time_t * tim_p _AND char * result) { struct tm tm; return asctime_r (localtime_r (tim_p, &tm), result); } #endif