Subversion Repositories Kolibri OS

#include 

time_t mktime (struct tm * timeptr)

{

    int utcdiff = -3;

    const int mon_days [] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

    unsigned long int tyears, tdays, leaps, utc_hrs;

    int i;

    tyears = timeptr->tm_year - 70 ;// tm->tm_year is from 1900.

    leaps = (tyears + 2) / 4; // no of next two lines until year 2100.

    i = (timeptr->tm_year - 100) / 100;

    leaps -= ( (i/4)*3 + i%4 );

    tdays = 0;

    for (i=0; i < timeptr->tm_mon; i++) tdays += mon_days[i];

    tdays += timeptr->tm_mday-1; // days of month passed.

    tdays = tdays + (tyears * 365) + leaps;

    utc_hrs = timeptr->tm_hour + utcdiff; // for your time zone.

    return (tdays * 86400) + (utc_hrs * 3600) + (timeptr->tm_min * 60) + timeptr->tm_sec;

}