コード例 #1
0
ファイル: mktime.c プロジェクト: BruceYi/okl4
time_t
mktime(struct tm *pt)
{
    time_t res = 0;
    int unix_year;
    time_t year_secs;

    pt->tm_wday = 0;
    pt->tm_yday = 0;
    if (tm_out_of_range(pt)) {
        errno = EOVERFLOW;
        return (time_t)(-1);
    }

    unix_year = (1900 + pt->tm_year) - 1970;

    if (unix_year != 0) {
        if (unix_year < 0) {
            res += get_year_seconds(abs(unix_year) - 1, 1971 + unix_year);
        } else {
            res += get_year_seconds(unix_year, 1970);
        }
    }

    pt->tm_yday = get_yday(pt);

    if (unix_year < 0) {
        year_secs = pt->tm_yday * 86400;
        year_secs += pt->tm_hour * 3600;
        year_secs += pt->tm_min * 60;
        year_secs += pt->tm_sec;
        if (is_leap_year(1970 + unix_year)) {
            res += (31622400 - year_secs);
        } else {
            res += (31536000 - year_secs);
        }
        res = -res;
    } else {
        res += pt->tm_yday * 86400;
        res += pt->tm_hour * 3600;
        res += pt->tm_min * 60;
        res += pt->tm_sec;
    }

    pt->tm_wday = get_week_day(res / 86400);

    _tz_add_offset(&res);
    return res;
}
コード例 #2
0
//-----------------------------------------------------------------//
long get_total_day(short year, char mon, char day)
{
	if(year < 1970) return -1L;

	long d = 0;
	short i = 1970;
	while(i < year) {
		d += (long)get_yday(i);
		i++;
	}

	i = 0;
	while(i < mon) {
		d += get_mday(year, i);
		i++;
	}

	d += day - 1;

	return d;
}
コード例 #3
0
//-----------------------------------------------------------------//
struct tm *gmtime(const time_t *tp)
{
	time_t	t;
	short	i, j, k;

	t = *tp;

	time_st_.tm_sec  = t % (time_t)60;
	t /= (time_t)60;

	time_st_.tm_min  = t % (time_t)60;
	t /= (time_t)60;

	time_st_.tm_hour = t % (time_t)24;
	t /= (time_t)24;

	time_st_.tm_wday = (t + 4) % 7;

	j = 1970;
	while(t >= (i = get_yday(j))) {
		t -= (time_t)i;
		j++;
	}
	time_st_.tm_year = j - 1900;

	time_st_.tm_yday = t;

	k = 0;
	while(t >= (i = get_mday(j, k))) {
		t -= (time_t)i;
		k++;
	}
	time_st_.tm_mon = k;
	time_st_.tm_mday = t + 1;

	return &time_st_;
}