kolibrios/programs/develop/ktcc/trunk/libc/stdlib/time.c

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#include <time.h>
#include <kolibrisys.h>
struct tm __buffertime;
struct tm * localtime (const time_t * timer)
/* non-standard! ignore parameter and return just time now */
{
int kos_date, kos_time;
kos_date = _ksys_get_date();
kos_time = _ksys_get_system_clock();
__buffertime.tm_mday = kos_date >> 16;
__buffertime.tm_mon = ((kos_date & 0xFF00) >> 8) -1;
__buffertime.tm_year = kos_date >> 16 + 100;
__buffertime.tm_wday = __buffertime.tm_yday = __buffertime.tm_isdst = -1; /* temporary */
__buffertime.tm_sec = kos_time >> 16;
__buffertime.tm_min = (kos_time & 0xFF00) >> 8;
__buffertime.tm_hour = kos_time & 0xFF;
return &__buffertime;
}
time_t time (time_t* timer)
{
time_t t = mktime(localtime(0));
if (timer) *timer = t;
return t;
}
time_t mktime (struct tm * timeptr)
{
int y, m, d;
time_t t;
y = timeptr->tm_year + 1900;
m = timeptr->tm_mon + 1;
d = timeptr->tm_mday; /* to -1 or not to -1? */
if (m < 3) { m += 12; y -= 1; }
t = y * 365 + y / 4 + y /400 - y / 100; /* years - > days */
t += 30 * m + 3 * (m + 1) / 5 + d; /* add month days */
t -= 719561; /* 01 jan 1970 */
t *= 86400;
t += 3600 * timeptr->tm_hour + 60 * timeptr->tm_min + timeptr->tm_sec;
return t;
}
double difftime (time_t end, time_t beginning)
{
return end - beginning;
}