ntp/libntp/ntp_calendar.c

106 	systime_func_ptr res;
108 	res = systime_func;
113 	return res;
244 	vint64 res;
251 	res.D_s.hi = 0;
253 		res.D_s.lo = (uint32_t)-tt;
254 		M_NEG(res.D_s.hi, res.D_s.lo);
256 		res.D_s.lo = (uint32_t)tt;
261 	res.q_s = tt;
271 		res.D_s.lo = (uint32_t)tt;
272 		res.D_s.hi = (uint32_t)(tt >> 32);
273 		M_NEG(res.D_s.hi, res.D_s.lo);
275 		res.D_s.lo = (uint32_t)tt;
276 		res.D_s.hi = (uint32_t)(tt >> 32);
281 	return res;
290 	time_t res;
294 	res = (time_t)tv->D_s.lo;
298 	res = (time_t)tv->q_s;
302 	res = ((time_t)tv->d_s.hi << 32) | tv->D_s.lo;
306 	return res;
458  * The result 'res' is a number that holds to the following properties:
460  *   1)	 res MOD cycle == value MOD cycle
461  *   2)	 pivot <= res < pivot + cycle
551  *   res.Q_s -= 0x80000000;
591 	vint64 res;
595 	res.q_s = (pivot != NULL)
598 	res.Q_s -= 0x80000000u;		/* unshift of half range */
600 	ntp	-= res.D_s.lo;		/* cycle difference	 */
601 	res.Q_s += (uint64_t)ntp;	/* get expanded time	 */
610 	res = time_to_vint64(&tmp);
611 	M_SUB(res.D_s.hi, res.D_s.lo, 0, 0x80000000u);
613 	ntp -= res.D_s.lo;		/* cycle difference	 */
614 	M_ADD(res.D_s.hi, res.D_s.lo, 0, ntp);
618 	return res;
640 	vint64 res;
644 	res.q_s = (pivot)
647 	res.Q_s -= 0x80000000u;		/* unshift of half range */
648 	res.Q_s += (uint32_t)JAN_1970;	/* warp into NTP domain	 */
649 	ntp	-= res.D_s.lo;		/* cycle difference	 */
650 	res.Q_s += (uint64_t)ntp;	/* get expanded time	 */
659 	res = time_to_vint64(&tmp);
660 	M_SUB(res.D_s.hi, res.D_s.lo, 0, 0x80000000u);
661 	M_ADD(res.D_s.hi, res.D_s.lo, 0, (uint32_t)JAN_1970);/*into NTP */
662 	ntp -= res.D_s.lo;		/* cycle difference	 */
663 	M_ADD(res.D_s.hi, res.D_s.lo, 0, ntp);
667 	return res;
681  * Split a 64bit seconds value into elapsed days in 'res.hi' and
682  * elapsed seconds since midnight in 'res.lo' using explicit floor
692 	ntpcal_split res;
759 	res.hi = uint32_2cpl_to_int32(Q);
760 	res.lo = ts->D_s.lo - Q * SECSPERDAY;
762 	return res;
805  * number into the number of elapsed years in 'res.hi' and the number
806  * of elapsed days of that year in 'res.lo'.
825 	ntpcal_split res;
844 	res.hi = n100 * 100 + n001;
845 	res.lo = uday / 4u;
857 	return res;
864  * 'res.hi' and the number of elapsed days of that month in 'res.lo'.
876 	ntpcal_split    res;
883 		res.hi = eyd >> 5;	   /* approx month; might be 1 too low */
884 		if (lt[res.hi + 1] <= eyd) /* fixup approximative month value  */
885 			res.hi += 1;
886 		res.lo = eyd - lt[res.hi];
888 		res.lo = res.hi = -1;
891 	return res;
1102 	vint64 res;
1106 	res.q_s	 = days;
1107 	res.q_s *= SECSPERDAY;
1108 	res.q_s += secs;
1116 	 * res = days *86400 + secs, using manual 16/32 bit
1124 	res.D_s.lo = (days & 0xFFFF) * 675u;
1125 	res.D_s.hi = 0;
1129 	M_ADD(res.D_s.hi, res.D_s.lo, p2, p1);
1132 	res.D_s.hi = (res.D_s.hi << 7) | (res.D_s.lo >> 25);
1133 	res.D_s.lo = (res.D_s.lo << 7);
1137 		M_NEG(res.D_s.hi, res.D_s.lo);
1147 	M_ADD(res.D_s.hi, res.D_s.lo, p2, p1);
1151 	return res;
1206  * The month will be normalized, and 'res.hi' will contain the
1208  * while 'res.lo' will contain the number of elapsed days since start
1223 	ntpcal_split res;
1226 	res.lo  = m + 10;
1227 	res.hi  = (res.lo >= 12);
1228 	if (res.hi)
1229 		res.lo -= 12;
1232 	if (res.lo < 0 || res.lo >= 12) {
1234 		sflag = int32_sflag(res.lo);
1235 		mu    = int32_to_uint32_2cpl(res.lo);
1237 		res.hi += uint32_2cpl_to_int32(Q);
1238 		res.lo  = mu - Q * 12u;
1242 	res.lo = shift_month_table[res.lo] - 306;
1244 	return res;
1264 	int32_t	     res;
1268 		res = ntpcal_days_in_years(years + tmp.hi) + tmp.lo;
1270 		res = ntpcal_days_in_years(years);
1271 	res += mdays;
1273 	return res;
1324 	int32_t res;
1326 	res = (hours * MINSPERHR + minutes) * SECSPERMIN + seconds;
1328 	return res;
1683  * era, split this number into the number of elapsed years in res.hi
1684  * and the excessive number of weeks in res.lo. (That is, res.lo is
1698 	ntpcal_split res;
1728 	res.hi = 100*cc + cy;
1729 	res.lo = sw / 157u;
1731 	return res;