1/*	$NetBSD: caljulian.c,v 1.6 2020/05/25 20:47:24 christos Exp $	*/
2
3/*
4 * caljulian - determine the Julian date from an NTP time.
5 *
6 * (Note: since we use the GREGORIAN calendar, this should be renamed to
7 * 'calgregorian' eventually...)
8 */
9#include <config.h>
10#include <sys/types.h>
11
12#include "ntp_types.h"
13#include "ntp_calendar.h"
14
15#if !(defined(ISC_CHECK_ALL) || defined(ISC_CHECK_NONE) || \
16      defined(ISC_CHECK_ENSURE) || defined(ISC_CHECK_INSIST) || \
17      defined(ISC_CHECK_INVARIANT))
18# define ISC_CHECK_ALL
19#endif
20
21#include "ntp_assert.h"
22
23void
24caljulian(
25	uint32_t		ntp,
26	struct calendar *	jt
27	)
28{
29	vint64		vlong;
30	ntpcal_split	split;
31
32
33	INSIST(NULL != jt);
34
35	/*
36	 * Unfold ntp time around current time into NTP domain. Split
37	 * into days and seconds, shift days into CE domain and
38	 * process the parts.
39	 */
40	vlong = ntpcal_ntp_to_ntp(ntp, NULL);
41	split = ntpcal_daysplit(&vlong);
42	ntpcal_daysplit_to_date(jt, &split, DAY_NTP_STARTS);
43}
44